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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549





Form 10-Q





(Mark One)

|x | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ---------------------------------------------------------------------------------------

For the quarterly period ended December 31, 2013

OR



| ̈ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ----------------------------------------------------------------------------------------

For the transition period from
 to
.

Commission file number 000-08565





Marine
Petroleum Trust

(Exact name of registrant as specified in its charter)







|                                                               |  |                                     
|-------------------------------------------------------------- |  | ------------------------------------
|Texas                                                          |  | 75-6008017                          
|(State or other jurisdiction of
incorporation or organization) |  | (I.R.S. Employer
Identification No.)

c/o The Corporate Trustee:

U.S. Trust, Bank of America Private Wealth Management

P. O. Box 830650, Dallas, Texas 75283-0650

(Address of principal executive offices) (Zip Code)

(800) 985-0794

(Registrants telephone number, including area code)

None

(Former name,
former address and former fiscal year, if changed since last report)





Indicate by
check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to
file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x     No    ̈



Indicate by check
mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the
preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).     Yes   ̈    No   ̈

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated
filer, a non-accelerated filer, or a smaller reporting company. See the definitions of large accelerated filer, accelerated filer and smaller reporting company in Rule 12b-2 of the Exchange Act. (Check one):



|                        |  |                                                  |  |                           |  |  
|----------------------- |  | ------------------------------------------------ |  | ------------------------- |  | -
|Large accelerated filer |  |  ̈                                                |  | Accelerated filer         |  |  ̈
|                        |  |                                                  | 
|Non-accelerated filer   |  |  ̈  (Do not check if a smaller reporting company) |  | Smaller reporting company |  | x

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange
Act).    Yes   ̈    No  x

Indicate the number of units of beneficial interest outstanding as of the latest practicable date:

As of February 11, 2014, Marine Petroleum Trust had 2,000,000 units of beneficial interest outstanding.









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MARINE PETROLEUM TRUST

INDEX



|                                                                                            |  |                                                                                                                                     |    |            |   | 
|------------------------------------------------------------------------------------------- |  | ----------------------------------------------------------------------------------------------------------------------------------- | -- | ---------- | - | 
|                                                                                            |  |                                                                                                                                     |    | PageNumber |  
|PART I. FINANCIAL INFORMATION                                                               |  |                                                                                                                                     |    |           
|                                                                                            | 
|Item 1. Financial Statements                                                                |  |                                                                                                                                     | 1  |           
|                                                                                            |  |                                                                                                                                    
|                                                                                            |  | Condensed Consolidated Statements of Assets, Liabilities and Trust Corpus as of December 31, 2013 (Unaudited) and June 30, 2013     |    |            | 1 | 
|                                                                                            |  |                                                                                                                                    
|                                                                                            |  | Condensed Consolidated Statements of Distributable Income for the Three and Six Months Ended December 31, 2013 and 2012 (Unaudited) |    |            | 2 | 
|                                                                                            |  |                                                                                                                                    
|                                                                                            |  | Condensed Consolidated Statements of Changes in Trust Corpus for the Six Months Ended December 31, 2013 and 2012 (Unaudited)        |    |            | 3 | 
|                                                                                            |  |                                                                                                                                    
|                                                                                            |  | Notes to Condensed Consolidated Financial Statements                                                                                |    |            | 4 | 
|                                                                                            | 
|Item 
2. Trustees Discussion and Analysis of Financial Condition and Results of Operations |  |                                                                                                                                     | 6  |           
|                                                                                            | 
|Item 3. Quantitative and Qualitative Disclosures About Market Risk                          |  |                                                                                                                                     | 12 |           
|                                                                                            | 
|Item 4. Controls and Procedures                                                             |  |                                                                                                                                     | 12 |           
|                                                                                            | 
|PART II. OTHER INFORMATION                                                                  |  |                                                                                                                                     |    |           
|                                                                                            | 
|Item 1A. Risk Factors                                                                       |  |                                                                                                                                     | 13 |           
|                                                                                            | 
|Item 6. Exhibits                                                                            |  |                                                                                                                                     | 13 |           



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PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

MARINE PETROLEUM TRUST AND SUBSIDIARY

CONDENSED CONSOLIDATED STATEMENTS OF ASSETS, LIABILITIES AND TRUST CORPUS

As of December 31, 2013 and June 30, 2013

ASSETS



|                                         |  |                  |           |  |              |   |           | 
|---------------------------------------- |  | ---------------- | --------- |  | ------------ | - | --------- | 
|                                         |  | December 31,2013 |           |  | June 30,2013 |  
|                                         |  | (Unaudited)      |           |  | (Audited)    |  
|Current assets:                          |  |                  |           |  |              |   |           | 
|Cash and cash equivalents                |  | $                | 1,251,285 |  |              | $ | 1,092,719 | 
|Federal income tax refundable            |  |                  | 2,800     |  |              |   | 2,800     | 
|Producing oil and natural gas properties |  |                  | 7         |  |              |   | 7         | 
|                                         |  |                  |           |  |              |   |           | 
|Total assets                             |  | $                | 1,254,092 |  |              | $ | 1,095,526 | 
|                                         |  |                  |           |  |              |   |           | 

LIABILITIES AND TRUST CORPUS



|                                                                                                          |  |   |           |  |  |   |           | 
|--------------------------------------------------------------------------------------------------------- |  | - | --------- |  |  | - | --------- | 
|Current liabilities:                                                                                      |  |   |           |  |  |   |           | 
|Federal income tax payable                                                                                |  | $ |          |  |  | $ |          | 
|                                                                                                          |  |   |           |  |  |   |           | 
|Total current liabilities                                                                                 |  | $ |          |  |  | $ |          | 
|                                                                                                          |  |   |           |  |  |   |           | 
|Trust corpus  2,000,000 units of beneficial interest authorized, 2,000,000 units issued at nominal value |  | $ | 1,254,092 |  |  | $ | 1,095,526 | 
|                                                                                                          |  |   |           |  |  |   |           | 
|                                                                                                          |  | $ | 1,254,092 |  |  | $ | 1,095,526 | 
|                                                                                                          |  |   |           |  |  |   |           | 

See accompanying notes to condensed consolidated financial statements.



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MARINE PETROLEUM TRUST AND SUBSIDIARY

CONDENSED CONSOLIDATED STATEMENTS OF DISTRIBUTABLE INCOME

For the Three and Six Months Ended December 31, 2013 and 2012

(Unaudited)



|                                                 |  |                                |           |  |                              |   |           |      |  |   |           |  |  |   |           | 
|------------------------------------------------ |  | ------------------------------ | --------- |  | ---------------------------- | - | --------- | ---- |  | - | --------- |  |  | - | --------- | 
|                                                 |  | Three Months EndedDecember 31, |           |  | Six Months EndedDecember 31, |  
|                                                 |  | 2013                           |           |  | 2012                         |   |           | 2013 |  |   | 2012      | 
|Income:                                          |  |                                |           |  |                              |   |           |      |  |   |           |  |  |   |           | 
|Oil and natural gas royalties                    |  | $                              | 932,242   |  |                              | $ | 631,964   |      |  | $ | 1,678,683 |  |  | $ | 1,258,539 | 
|Oil and natural gas royalties from affiliate     |  |                                | 38,345    |  |                              |   | 75,595    |      |  |   | 73,720    |  |  |   | 145,344   | 
|Interest income                                  |  |                                | 18        |  |                              |   | 15        |      |  |   | 37        |  |  |   | 33        | 
|                                                 |  |                                |           |  |                              |   |           |      |  |   |           |  |  |   |           | 
|Total income                                     |  |                                | 970,605   |  |                              |   | 707,574   |      |  |   | 1,752,440 |  |  |   | 1,403,916 | 
|Expenses:                                        |  |                                |           |  |                              |   |           |      |  |   |           |  |  |   |           | 
|General and administrative                       |  |                                | 69,590    |  |                              |   | 104,796   |      |  |   | 134,144   |  |  |   | 140,276   | 
|                                                 |  |                                |           |  |                              |   |           |      |  |   |           |  |  |   |           | 
|Distributable income before federal income taxes |  |                                | 901,015   |  |                              |   | 602,778   |      |  |   | 1,618,296 |  |  |   | 1,263,640 | 
|Federal income taxes of subsidiary               |  |                                |          |  |                              |   |          |      |  |   |          |  |  |   |          | 
|                                                 |  |                                |           |  |                              |   |           |      |  |   |           |  |  |   |           | 
|Distributable income                             |  | $                              | 901,015   |  |                              | $ | 602,778   |      |  | $ | 1,618,296 |  |  | $ | 1,263,640 | 
|                                                 |  |                                |           |  |                              |   |           |      |  |   |           |  |  |   |           | 
|Distributable income per unit                    |  | $                              | 0.45      |  |                              | $ | 0.30      |      |  | $ | 0.81      |  |  | $ | 0.63      | 
|                                                 |  |                                |           |  |                              |   |           |      |  |   |           |  |  |   |           | 
|Distributions per unit                           |  | $                              | 0.38      |  |                              | $ | 0.30      |      |  | $ | 0.73      |  |  | $ | 0.68      | 
|                                                 |  |                                |           |  |                              |   |           |      |  |   |           |  |  |   |           | 
|Units outstanding                                |  |                                | 2,000,000 |  |                              |   | 2,000,000 |      |  |   | 2,000,000 |  |  |   | 2,000,000 | 
|                                                 |  |                                |           |  |                              |   |           |      |  |   |           |  |  |   |           | 

See accompanying notes to condensed consolidated financial statements.



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MARINE PETROLEUM TRUST AND SUBSIDIARY

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN TRUST CORPUS

For the Six Months Ended December 31, 2013 and 2012

(Unaudited)



|                                  |  |                              |            |   |      |   |            |  
|--------------------------------- |  | ---------------------------- | ---------- | - | ---- | - | ---------- | -
|                                  |  | Six Months EndedDecember 31, |           
|                                  |  | 2013                         |            |   | 2012 |  
|Trust corpus, beginning of period |  | $                            | 1,095,526  |   |      | $ | 1,187,051  |  
|Distributable income              |  |                              | 1,618,296  |   |      |   | 1,263,640  |  
|Distributions to unitholders      |  |                              | (1,459,730 | ) |      |   | (1,354,130 | )
|                                  |  |                              |            |   |      |   |            |  
|Trust corpus, end of period       |  | $                            | 1,254,092  |   |      | $ | 1,096,561  |  
|                                  |  |                              |            |   |      |   |            |  

See accompanying notes to condensed consolidated financial statements.



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MARINE PETROLEUM TRUST AND SUBSIDIARY

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

December 31, 2013

(Unaudited)

Note 1. Accounting
Policies

The financial statements herein include the financial statements of Marine Petroleum Trust (the Trust) and its
wholly-owned subsidiary, Marine Petroleum Corporation (MPC, and collectively with the Trust, Marine). The financial statements are condensed and consolidated and should be read in conjunction with Marines Annual Report
on Form 10-K for the fiscal year ended June 30, 2013. The financial statements included herein are unaudited, but in the opinion of the Trustee (as defined herein) of the Trust, they include all adjustments necessary for a fair presentation of
the results of operations for the periods presented. Operating results for the interim periods reported herein are not necessarily indicative of the results that may be expected for the fiscal year ending June 30, 2014.

Note 2. Basis of Accounting

The
financial statements of Marine are prepared on the modified cash basis method and are not intended to present Marines financial position and results of operations in conformity with generally accepted accounting principles in the United States
(GAAP). Under the modified cash basis method the financial statements of Marine differ from financial statements prepared in conformity with GAAP because of the following:



| |  |  | Royalty income is recognized in the month when received by Marine rather than in the month of production.
| | - |  | ---------------------------------------------------------------------------------------------------------



| |  |  | Marines expenses (including accounting, legal, other professional fees, trustees fees and out-of-pocket expenses) are recorded on an actual paid basis in the month paid rather than in the month incurred.
Reserves for liabilities that are contingent or uncertain in amount may also be established if considered necessary, which would not be recorded under GAAP.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Distributions to unitholders are recognized when declared by the trustee of the Trust.
| | - |  | --------------------------------------------------------------------------------------

The
modified cash basis method of accounting corresponds to the accounting principles permitted for royalty trusts by the U.S. Securities and Exchange Commission (the SEC), as specified by Staff Accounting Bulletin Topic 12:E, Financial
Statements of Royalty Trusts (SAB 12:E).

Note 3. Distributable Income

The Trusts Indenture (the Indenture) provides that the Trustee is to distribute all cash in the Trust, less an amount
reserved for payment of accrued liabilities and estimated future expenses, to unitholders of record on the 28th day of March, June, September and December of each year. If the 28th day falls on a Saturday, Sunday or legal holiday, the payments are to be made on the immediately succeeding business day.

As stated under Note 1. Accounting Policies above, the financial statements in this Quarterly Report on Form 10-Q are the
condensed and consolidated financial statements of the Trust and MPC. However, distributable income is paid from the account balances of the Trust. Distributable income is comprised of (i) royalties from offshore Texas leases owned directly by
the Trust, (ii) 98% of the royalties received from offshore Louisiana leases owned by MPC, which are retained by and delivered to the Trust on a quarterly basis, (iii) cash distributions from the Trusts interest in Tidelands Royalty
Trust B (Tidelands), a separate publicly traded royalty trust, (iv) dividends paid by MPC, less (v) administrative expenses incurred by the Trust. Distributions fluctuate from quarter to quarter primarily due to
changes in oil and natural gas prices and production quantities.



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Note 4. Investment in Affiliate  Tidelands Royalty Trust B

At December 31, 2013 and 2012, the Trust owned 32.6% of the outstanding units of beneficial interest in Tidelands.

The following summary financial statements have been derived from the unaudited condensed consolidated financial statements of Tidelands:

TIDELANDS CONDENSED CONSOLIDATED STATEMENTS OF DISTRIBUTABLE INCOME



|                                                 |  |                                     |         |  |                                    |   |         |                                  |  |   |         | 
|------------------------------------------------ |  | ----------------------------------- | ------- |  | ---------------------------------- | - | ------- | -------------------------------- |  | - | ------- | 
|                                                 |  | Three Months EndedSeptember 30,2013 |         |  | Three Months EndedDecember 31,2012 |   |         | Six Months EndedDecember 31,2012 | 
|Income                                           |  | $                                   | 149,566 |  |                                    | $ | 266,478 |                                  |  | $ | 466,057 | 
|                                                 |  |                                     |         |  |                                    |   |         |                                  |  |   |         | 
|Expenses                                         |  |                                     | 35,393  |  |                                    |   | 34,005  |                                  |  |   | 79,934  | 
|                                                 |  |                                     |         |  |                                    |   |         |                                  |  |   |         | 
|Distributable income before Federal income taxes |  |                                     | 114,173 |  |                                    |   | 232,473 |                                  |  |   | 386,123 | 
|Federal income taxes of Tidelands subsidiary    |  |                                     |        |  |                                    |   |        |                                  |  |   |        | 
|                                                 |  |                                     |         |  |                                    |   |         |                                  |  |   |         | 
|Distributable income                             |  | $                                   | 114,173 |  |                                    | $ | 232,473 |                                  |  | $ | 386,123 | 

Tidelands is a reporting company under the Securities Exchange Act of 1934, as amended (the Exchange
Act) that has filed its Annual Report on Form 10-K for the fiscal year ended December 31, 2012. Tidelands has not yet filed its financial statements for the fiscal year ended December 31, 2013 with the SEC. Therefore, the Condensed
Consolidated Statements of Distributable Income of Tidelands have been taken from Tidelands Quarterly Report on Form 10-Q for the period ended September 30, 2013, the latest period for which such information is publicly available.
Reference should be made to Tidelands public filings for current information concerning Tidelands financial position and results of operations.



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Item 2. Trustees Discussion and Analysis of Financial Condition and
Results of Operations

Organization

Marine Petroleum Trust (the Trust) is a royalty trust that was created in 1956 under the laws of the State of Texas. U.S. Trust,
Bank of America Private Wealth Management serves as corporate trustee (the Trustee). The Trusts Indenture (the Indenture) provides that the term of the Trust will expire on June 1, 2021, unless extended by the vote
of the holders of a majority of the outstanding units of beneficial interest. The Trust is not permitted to engage in any business activity because it was organized for the sole purpose of providing an efficient, orderly and practical means for the
administration and liquidation of rights to payments from certain oil and natural gas leases in the Gulf of Mexico, pursuant to license agreements and amendments between the Trusts predecessors and Gulf Oil Corporation (Gulf). As a
result of various transactions that have occurred since 1956, these interests now are held by Chevron Corporation (Chevron) and its assignees. The Trust holds title to interests in properties that are situated offshore of Texas.

The Trusts wholly-owned subsidiary, MPC, holds title to interests in properties that are situated offshore of Louisiana because at the
time the Trust was created, trusts could not hold these interests under Louisiana law. MPC is prohibited from engaging in a trade or business and only takes those actions that are necessary for the administration and liquidation of its properties.

Marines rights are generally referred to as overriding royalty interests in the oil and natural gas industry. An overriding royalty
interest is created by an assignment by the owner of a working interest in an oil or natural gas lease. The royalty rights associated with an overriding royalty interest terminate when the underlying lease terminates. All production and marketing
functions are conducted by the working interest owners of the leases. Income from overriding royalties is paid to Marine either (i) on the basis of the selling price of oil, natural gas and other minerals produced, saved or sold, or
(ii) at the value at the wellhead as determined by industry standards, when the selling price does not reflect the value at the wellhead.

The Trustee assumes that some units of beneficial interest are held by middlemen, as such term is broadly defined in U.S. Treasury Regulations
(and includes custodians, nominees, certain joint owners and brokers holding an interest for a customer in street name). Therefore, the Trustee considers the Trust to be a widely held fixed investment trust (WHFIT) for U.S. federal
income tax purposes. Accordingly, the Trust will provide tax information in accordance with applicable U.S. Treasury Regulations governing the information reporting requirements of the Trust as a WHFIT. The Trustee will provide the required
information and the contact information for the Trustee:

U.S. Trust, Bank of America Private Wealth Management

P.O. Box 830650

Dallas, Texas
75283-0650

Telephone number: (800) 985-0794

Each unitholder should consult its own tax advisor for compliance with U.S. federal income tax laws and regulations.

Liquidity and Capital Resources

As
stated in the Indenture, there is no requirement for capital due to the limited purpose of the Trust. The Trusts only obligation is to distribute the distributable income that is actually collected to unitholders. As an administrator of oil
and natural gas royalty interests, the Trust collects royalties monthly, pays administrative expenses and disburses all net royalties that are collected to its unitholders each quarter.

The Indenture (and MPCs charter and by-laws) expressly prohibits the operation of any kind of trade or business. The Trusts oil
and natural gas properties are depleting assets that are not being replaced due to the prohibition against investments. These restrictions, along with other factors, allow the Trust to be treated as a grantor trust. As a grantor trust, all income
and deductions for state and U.S. federal income tax purposes generally flow through to each individual unitholder. The State of Texas imposes a franchise tax, but the Trust does not



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believe that it is subject to the franchise tax because at least 90% of its income is from passive sources. Please see Marines Annual Report on Form 10-K for the fiscal year ended
June 30, 2013 for further information. MPC is a taxable entity that pays state and U.S. federal income taxes and state franchise taxes. However, MPCs income specifically excludes 98% of the oil and natural gas royalties collected by MPC,
which are retained by and delivered to the Trust because of the Trusts net profits interest.

The Leases

Marine relies on public records for information regarding drilling and workover operations. The public records available up to the date of this
report indicate that there were five new well completions made during the three months ended December 31, 2013 on leases in which Marine has an interest. As of February 6, 2014, public records also indicated that there were three wells in
the process of being drilled or recompleted on other leases in which Marine has an interest. There is no assurance that such wells will be drilled or recompleted, and if they are drilled or recompleted, that they will be successful.

Marine holds an overriding royalty interest that is equal to three-fourths of one percent of the working interest and is calculated on the
value at the well of any oil, natural gas or other minerals produced and sold from 55 leases covering 199,868 gross acres located in the Gulf of Mexico. Marines overriding royalty interest applies only to existing leases and does not apply to
any new leases that Chevron may acquire. The Trust also owns a 32.6% interest in Tidelands. Tidelands has an overriding royalty interest in four oil and natural gas leases covering 17,188 gross acres in the Gulf of Mexico. As a result of this
ownership, the Trust receives periodic distributions from Tidelands.

Critical Accounting Policies and Estimates

In accordance with the SAB 12:E, Marine uses the modified cash basis method of accounting. Under this accounting method, royalty income is
recorded when received, and distributions to unitholders are recorded when declared by the Trustee of the Trust. Expenses of Marine (including accounting, legal, other professional fees, trustees fees and out-of-pocket expenses) are recorded
on an actual paid basis. Marine also reports distributable income instead of net income under the modified cash basis method of accounting. Cash reserves are permitted to be established by the Trustee for certain contingencies that would not be
recorded under GAAP.

Marine did not have any changes in its critical accounting policies or estimates during the three months ended
December 31, 2013. Please see Marines Annual Report on Form 10-K for the fiscal year ended June 30, 2013 for a detailed discussion of its critical accounting policies.

New Accounting Pronouncements

There are
no new pronouncements that are expected to have a significant impact on Marines financial statements.

Recent Developments

As previously disclosed in a Current Report on Form 8-K filed with the Securities and Exchange Commission on January 9, 2014, the Trustee
will be resigning as trustee of the Trust, subject to the conditions set forth below. The Trustee intends to nominate Southwest Bank, an independent state bank chartered under the laws of the State of Texas and headquartered in Fort Worth, Texas
(Southwest Bank), as successor trustee to be approved by written consent of the unitholders of the Trust.

The Trustees
resignation is conditioned on the satisfaction or waiver by the Trustee of the following:



| |  |  | The appointment of Southwest Bank as trustee of Sabine Royalty Trust (another royalty trust for which the Trustee currently serves as trustee).
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------



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| |  |  | The appointment of Southwest Bank or another successor trustee as trustee of the Trust and five other royalty trusts for which the Trustee currently serves as trustee and as agent under a disbursing arrangement for
which the Trustee currently serves as agent.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | The accuracy of certain representations and warranties and performance of certain agreements made by Southwest Bank in an agreement between the Trustee and Southwest Bank.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | No governmental injunction, order or other action that would prohibit Southwest Banks appointment, the Trustees resignation or the other actions described above.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------

The effective date of the Trustees resignation shall be May 30, 2014, assuming all of the conditions described above have been
satisfied or waived by the Trustee as of such date. If the conditions described above have not been satisfied or waived by the Trustee as of such date, the resignation shall be effective August 29, 2014, assuming all of the conditions described
above have been satisfied or waived by the Trustee as of such date. If the resignation is not effective as of such later effective date, the Trustee will notify unitholders of the new effective date.

General

Marines royalty income is
derived from the oil and natural gas production activities of third parties. Marines royalty income fluctuates from period to period based upon factors beyond Marines control, including, without limitation, the number of productive wells
drilled and maintained on leases that are subject to Marines interest, the level of production over time from such wells and the prices at which the oil and natural gas from such wells are sold.

Important aspects of Marines operations are conducted by third parties. Marines royalty income is dependent on the operations of
the working interest owners of the leases on which Marine has an overriding royalty interest. The oil and natural gas companies that lease tracts subject to Marines interests are responsible for the production and sale of oil and natural gas
and the calculation of royalty payments to Marine. The only obligation of the working interest owners to Marine is to make monthly overriding royalty payments that reflect Marines interest in the oil and natural gas sold. Marines
distributions are processed and paid by its transfer agent, American Stock Transfer & Trust Company, LLC.

The volume of oil and
natural gas produced and the selling prices of such oil and natural gas are the primary factors in calculating overriding royalty payments. Production is affected by the natural production decline of the producing wells, the number of new wells
drilled and the number of existing wells that are re-worked and placed back in production on the leases. Production from existing wells is anticipated to decrease in the future due to normal well depletion. The operators do not provide Marine with
information regarding future drilling or re-working operations that could impact the oil and natural gas production from the leases for which Marine has an overriding royalty interest.

Summary of Operating Results

During the
six months ended December 31, 2013, royalty income from the sale of oil represented 84% of Marines total royalty income and royalty income from the sale of natural gas represented 16% of Marines total royalty income, excluding its
interest in Tidelands. During the six months ended December 31, 2012, royalty income from the sale of oil represented 85% of Marines total royalty income and royalty income from the sale of natural gas represented 15% of Marines
total royalty income, excluding its interest in Tidelands. Royalty income includes oil and natural gas royalties that Marine receives from producers. During the six months ended December 31, 2013, distributions received from Tidelands accounted
for 4% of Marines total income. During the six months ended December 31, 2012, distributions received from Tidelands accounted for 10% of Marines total income.

Distributable income per unit for the six months ended December 31, 2013 increased to $0.81 as compared to $0.63 for the comparable
period in 2012. Distributions per unit amounted to $0.73 per unit for the six months ended December 31, 2013, an increase from distributions of $0.68 per unit for the comparable period in 2012. During the six months ended December 31,
2013, the difference between distributable income per unit and distributions per unit resulted from timing differences between the closing of the financial statements and the determination date of the distribution amount to unitholders.



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For the six months ended December 31, 2013, excluding the Trusts interest in
Tidelands, oil production increased by 4,221 barrels (bbls) and natural gas production increased by 2,776 thousand cubic feet (mcf) from the levels realized for the comparable period in 2012. For the six months ended December 31, 2013,
excluding the Trusts interest in Tidelands, the average price realized for oil decreased $6.55 per bbl to $101.82 per bbl from the average price realized for the comparable period in 2012 and the average price realized for natural gas
increased $0.84 per mcf to $4.60 per mcf from the average price realized for the comparable period in 2012.

The following table presents
the net production quantities of oil and natural gas and distributable income and distributions per unit for the last six quarters.



|                   |  |                             |       |  |                  |  |        |                              |  |   |                       |  |  |   |      | 
|------------------ |  | --------------------------- | ----- |  | ---------------- |  | ------ | ---------------------------- |  | - | --------------------- |  |  | - | ---- | 
|                   |  | Net ProductionQuantities(1) |       |  |                  |  |        |                              | 
|Quarter Ended      |  | Oil (bbls)                  |       |  | NaturalGas (mcf) |  |        | DistributableIncome Per Unit |  |   | DistributionsPer Unit | 
|September 30, 2012 |  |                             | 4,878 |  |                  |  | 26,091 |                              |  | $ | 0.33                  |  |  | $ | 0.38 | 
|December 31, 2012  |  |                             | 4,998 |  |                  |  | 23,924 |                              |  | $ | 0.30                  |  |  | $ | 0.30 | 
|March 31, 2013     |  |                             | 5,916 |  |                  |  | 29,304 |                              |  | $ | 0.37                  |  |  | $ | 0.33 | 
|June 30, 2013      |  |                             | 5,343 |  |                  |  | 29,575 |                              |  | $ | 0.36                  |  |  | $ | 0.40 | 
|September 30, 2013 |  |                             | 6,143 |  |                  |  | 22,077 |                              |  | $ | 0.36                  |  |  | $ | 0.35 | 
|December 31, 2013  |  |                             | 7,954 |  |                  |  | 30,714 |                              |  | $ | 0.45                  |  |  | $ | 0.38 | 



|(1) | Excludes the Trusts interest in Tidelands.
|--- | -------------------------------------------

Results of OperationsThree Months Ended
December 31, 2013 Compared to the Three Months Ended December 31, 2012

Income from oil and natural gas royalties increased
$300,278 to $932,242 during the three months ended December 31, 2013 from $631,964 realized for the comparable period in 2012. Royalties increased for the three months ended December 31, 2013 primarily due to a 59% increase in the
production of oil, a 28% increase in natural gas production and a 22% increase in the average realized price for natural gas as compared to the comparable period in 2012, offset partially by a 8% decrease in the average realized price for oil as
compared to the comparable period in 2012.

Distributable income increased to $901,015 for the three months ended December 31, 2013
from $602,778 realized for the comparable period in 2012.

Income from oil royalties, excluding the Trusts interest in Tidelands,
for the three months ended December 31, 2013 increased to $784,901 from $538,430 realized for the comparable period in 2012. The volume of oil sold in the three months ended December 31, 2013 increased by 2,956 bbls, while the average
price realized for oil decreased $9.05 per bbl to $98.68 per bbl for the three months ended December 31, 2013 from $107.73 per bbl realized for the comparable period in 2012.

Income from natural gas royalties, excluding the Trusts interest in Tidelands, for the three months ended December 31, 2013
increased to $147,341 from $93,534 for the comparable period in 2012. The volume of natural gas sold in the three months ended December 31, 2013 increased by 6,790 mcf, and the average price realized for natural gas increased $0.86 per mcf to
$4.77 per mcf for the three months ended December 31, 2013 from $3.91 per mcf realized for the comparable period in 2012.

Income
from distributions received from Tidelands for the three months ended December 31, 2013 decreased to $38,345 from $75,595 for the comparable period in 2012.



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##### Table of Contents

The following table presents the quantities of oil and natural gas sold and the average price
realized for the three months ended December 31, 2013, and those realized for the comparable period in 2012, excluding the Trusts interest in Tidelands.



|              |  |                                |        |  |      |   |        |          |  |  |    |   
|------------- |  | ------------------------------ | ------ |  | ---- | - | ------ | -------- |  |  | -- | --
|              |  | Three Months EndedDecember 31, |        |  |      |  
|              |  | 2013                           |        |  | 2012 |   |        | % Change | 
|              |  | (unaudited)                    |        |  |      |  
|Oil           |  |                                |        |  |      |   |        |          |  |  |    |   
|Bbls sold     |  |                                | 7,954  |  |      |   | 4,998  |          |  |  | 59 | % 
|Average price |  | $                              | 98.68  |  |      | $ | 107.73 |          |  |  | (8 | )%
|Natural gas   |  |                                |        |  |      |   |        |          |  |  |    |   
|Mcf sold      |  |                                | 30,714 |  |      |   | 23,924 |          |  |  | 28 | % 
|Average price |  | $                              | 4.77   |  |      | $ | 3.91   |          |  |  | 22 | % 

General and administrative expenses decreased to $69,590 for the three months ended December 31, 2013
from $104,796 for the comparable period of 2012, primarily due to decreased professional fees and expenses and timing of receipt and payment of certain invoices.

Results of OperationsSix Months Ended December 31, 2013 Compared to the Six Months Ended December 31, 2012

Income from oil and natural gas royalties increased $420,144 to $1,678,683 during the six months ended December 31, 2013 from $1,258,539
realized for the comparable period in 2012. Royalties increased for the six months ended December 31, 2013 primarily due to a 43% increase in the production of oil, a 6% increase in natural gas production and a 22% increase in the average
realized price for natural gas as compared to the comparable period in 2012, offset partially by a 6% decrease in the average realized price for oil as compared to the comparable period in 2012.

Distributable income increased to $1,618,296 for the six months ended December 31, 2013 from $1,263,640 realized for the comparable
period in 2012.

Income from oil royalties, excluding the Trusts interest in Tidelands, for the six months ended December 31,
2013 increased to $1,435,357 from $1,070,260 realized for the comparable period in 2012. The volume of oil sold in the six months ended December 31, 2013 increased by 4,221 bbls, while the average price realized for oil decreased $6.55 per bbl
to $101.82 per bbl for the six months ended December 31, 2013 from $108.37 per bbl realized for the comparable period in 2012.

Income from natural gas royalties, excluding the Trusts interest in Tidelands, for the six months ended December 31, 2013 increased
to $243,326 from $188,279 for the comparable period in 2012. The volume of natural gas sold in the six months ended December 31, 2013 increased by 2,776 mcf, and the average price realized for natural gas increased $0.84 per mcf to $4.60 per
mcf for the six months ended December 31, 2013 from $3.76 per mcf realized for the comparable period in 2012.

Income from
distributions received from Tidelands for the six months ended December 31, 2013 decreased to $73,720 from $145,344 for the comparable period in 2012.



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##### Table of Contents

The following table presents the quantities of oil and natural gas sold and the average price
realized for the six months ended December 31, 2013, and those realized for the comparable period in 2012, excluding the Trusts interest in Tidelands.



|              |  |                              |        |  |      |   |        |          |  |  |    |   
|------------- |  | ---------------------------- | ------ |  | ---- | - | ------ | -------- |  |  | -- | --
|              |  | Six Months EndedDecember 31, |        |  |      |  
|              |  | 2013                         |        |  | 2012 |   |        | % Change | 
|              |  | (unaudited)                  |        |  |      |  
|Oil           |  |                              |        |  |      |   |        |          |  |  |    |   
|Bbls sold     |  |                              | 14,097 |  |      |   | 9,876  |          |  |  | 43 | % 
|Average price |  | $                            | 101.82 |  |      | $ | 108.37 |          |  |  | (6 | )%
|Natural gas   |  |                              |        |  |      |   |        |          |  |  |    |   
|Mcf sold      |  |                              | 52,791 |  |      |   | 50,015 |          |  |  | 6  | % 
|Average price |  | $                            | 4.60   |  |      | $ | 3.76   |          |  |  | 22 | % 

General and administrative expenses decreased to $134,144 for the six months ended December 31, 2013 from
$140,276 for the comparable period of 2012, primarily due to decreased professional fees and expenses.

Forward-Looking Statements

The statements discussed in this Quarterly Report on Form 10-Q regarding Marines future financial performance and results, and other
statements that are not historical facts, are forward-looking statements as defined in Section 27A of the Securities Act of 1933, as amended and Section 21E of the Securities Exchange Act of 1934, as amended (the Exchange Act).
This report uses words anticipate, believe, budget, continue, estimate, expect, intend, may, plan, or other similar words to identify
forward-looking statements. You should read statements that contain these words carefully because they discuss future expectations, contain projections of Marines financial condition, and/or state other forward-looking information.
Actual results may differ from expected results because of: reductions in price or demand for oil and natural gas, which might then lead to decreased production; reductions in production due to the depletion of existing wells or disruptions in
service, which may be caused by storm damage to production facilities, blowouts or other production accidents, or geological changes such as cratering of productive formations; changes in regulations; general economic conditions; actions and
policies of petroleum-producing nations; other changes in domestic and international energy markets; the resignation of the Trustee; and the expiration, termination or release of leases subject to Marines interests. Additional risks are set
forth in Marines Annual Report on Form 10-K for the fiscal year ended June 30, 2013. Events may occur in the future that Marine is unable to accurately predict or over which it has no control. If one or more of these uncertainties
materialize, or if underlying assumptions prove incorrect, actual outcomes may vary materially from those forward-looking statements included in this Quarterly Report on Form 10-Q.

Website

Marine makes available, free of
charge, its Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and amendments to such reports at its website at www.marps-marinepetroleumtrust.com. Each of these reports will be posted on this website as soon
as reasonably practicable after such report is electronically filed with, or furnished, to the SEC.



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##### Table of Contents

Item 3. Quantitative and Qualitative Disclosures About Market Risk

Marine did not experience any material changes in market risk during the period covered by this Quarterly Report on Form 10-Q.
Marines market risk is described in more detail in Item 7A. Quantitative and Qualitative Disclosures About Market Risk in its Annual Report on Form 10-K for the fiscal year ended June 30, 2013.

Item 4. Controls and Procedures

Conclusion Regarding the Effectiveness of Disclosure Controls and Procedures

U.S. Trust, Bank of America Private Wealth Management, as Trustee of the Trust, is responsible for establishing and maintaining Marines
disclosure controls and procedures. Marines disclosure controls and procedures include controls and other procedures that are designed to ensure that information required to be disclosed by Marine in the reports that it files or submits under
the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SECs rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that
information required to be disclosed by Marine in the reports that it files or submits under the Exchange Act is accumulated and communicated to the Trustee as appropriate to allow timely decisions regarding required disclosure.

As of December 31, 2013, the Trustee carried out an evaluation of the effectiveness of the design and operation of Marines
disclosure controls and procedures pursuant to Rules 13a-15(b) and 15d-15(b) of the Exchange Act. Based upon that evaluation, the Trustee concluded that Marines disclosure controls and procedures were effective as of December 31, 2013.

Changes in Internal Control Over Financial Reporting

There have not been any changes in Marines internal control over financial reporting during the quarter ended December 31, 2013 that
have materially affected, or are reasonably likely to materially affect, Marines internal control over financial reporting.



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##### Table of Contents

PART II. OTHER INFORMATION

Item 1A. Risk Factors

As of the date of this filing, there have been no material changes from the risk factors previously disclosed in the Risk Factors
in Marines Annual Report filed on Form 10-K for the fiscal year ended June 30, 2013, except as follows:

The Trustee may not be
able to resign or a new trustee may not be approved.

As previously discussed, the Trustee intends to resign as trustee of the Trust.
The Trust cannot guarantee that the unitholders will consent to the replacement of the Trustee with Southwest Bank, and there is no guarantee that Southwest Bank will become the new trustee. If Southwest Bank does not become the new trustee, there
can be no assurance that the Trustee will remain the trustee or that a different trustee will not be approved at a later date.

Item 6. Exhibits

The following exhibits are included herein:



|     |  |                                                                                                  
|---- |  | -------------------------------------------------------------------------------------------------
|31.1 |  | Certification of the Corporate Trustee pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
|     | 
|32.1 |  | Certification of the Corporate Trustee pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.



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##### Table of Contents

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by
the undersigned, thereunto duly authorized.



|                  |  |  |  |                                                                                       |  |                  
|----------------- |  |  |  | ------------------------------------------------------------------------------------- |  | -----------------
|                  |  |  |  | MARINE PETROLEUM TRUST U.S.
Trust, Bank of America Private Wealth Management, Trustee
|                  |  |  | 
|February 14, 2014 |  |  |  | By:                                                                                   |  | /s/ Ron E. Hooper
|                  |  |  |  | Ron E. Hooper                                                                        
|                  |  |  |  | Senior Vice President