> ***Chapter 5 -- Appendix M***
>
> ***Book 3: Absolute Risk Levels***

Book 3: Absolute Risk Levels

**Check the block that best describes this condition in the waterway**

+-----------------------------------------------------------------------+
| **Vessel Conditions:**                                                |
|                                                                       |
| **Vessel Quality**                                                    |
+-----------------------------------------------------------------------+

  --- ---- --------------------------------------------------------------
           Nearly 100% of the commercial and recreational vessels using
           the waterway are materially sound

           

           

           

           90% of the commercial and recreational vessels using the
           waterway are materially sound

           

           

           

           80% of the commercial and recreational vessels using the
           waterway are materially sound

           

           

           

           70% or less of the commercial and recreational vessels using
           the waterway are materially sound

           

           
  --- ---- --------------------------------------------------------------

Book 3: Absolute Risk Levels

**Check the block that best describes this condition in the waterway**

+-----------------------------------------------------------------------+
| **Vessel Conditions:**                                                |
|                                                                       |
| **Deep Draft Mariner Proficiency**                                    |
+-----------------------------------------------------------------------+

  --- ---- --------------------------------------------------------------
           Nearly 100% of mariners aboard deep draft commercial vessels
           using the waterway are proficient

           

           

           

           90% of mariners aboard deep draft commercial vessels using the
           waterway are proficient

           

           

           

           80% of mariners aboard deep draft commercial vessels using the
           waterway are proficient

           

           

           

           70% or less of mariners aboard deep draft commercial vessels
           using the waterway are proficient

           

           
  --- ---- --------------------------------------------------------------

Book 3: Absolute Risk Levels

**Check the block that best describes this condition in the waterway**

+-----------------------------------------------------------------------+
| **Vessel Conditions:**                                                |
|                                                                       |
| **Shallow Draft Mariner Proficiency**                                 |
+-----------------------------------------------------------------------+

  --- ---- --------------------------------------------------------------
           Nearly 100% of mariners aboard shallow draft commercial
           vessels using the waterway are proficient

           

           

           

           90% of mariners aboard shallow draft commercial vessels using
           the waterway are proficient

           

           

           

           80% of mariners aboard shallow draft commercial vessels using
           the waterway are proficient

           

           

           

           70% or less of mariners aboard shallow draft commercial
           vessels using the waterway are proficient

           

           
  --- ---- --------------------------------------------------------------

Book 3: Absolute Risk Levels

**Check the block that best describes this condition in the waterway**

+-----------------------------------------------------------------------+
| **Vessel Conditions:**                                                |
|                                                                       |
| **Recreational Boater Proficiency**                                   |
+-----------------------------------------------------------------------+

  --- ---- --------------------------------------------------------------
           Nearly 100% of recreational boaters using the waterway are
           proficient

           

           

           

           90% of recreational boaters using the waterway are proficient

           

           

           

           80% of recreational boaters using the waterway are proficient

           

           

           

           70% or less of recreational boaters using the waterway are
           proficient

           

           
  --- ---- --------------------------------------------------------------

Book 3: Absolute Risk Levels

**Check the block that best describes this condition in the waterway**

+-----------------------------------------------------------------------+
| **Traffic Conditions:**                                               |
|                                                                       |
| **Volume of Commercial Traffic**                                      |
+-----------------------------------------------------------------------+

  --- ---- --------------------------------------------------------------
           Light commercial traffic (less than 10 vessel transits per
           day)

           

           

           

           Moderate commercial traffic (10-50 vessel transits per day)

           

           

           

           Heavy commercial traffic (more than 50 vessel transits per
           day) BUT waterway infrastructure handles load easily

           

           

           

           Heavy commercial traffic (more than 50 vessel transits per
           day) AND vessels regularly have to wait for berths

           

           
  --- ---- --------------------------------------------------------------

Book 3: Absolute Risk Levels

**Check the block that best describes this condition in the waterway**

+-----------------------------------------------------------------------+
| **Traffic Conditions:**                                               |
|                                                                       |
| **Volume of Recreational Traffic**                                    |
+-----------------------------------------------------------------------+

  --- ---- --------------------------------------------------------------
           Light recreational use of the waterway

           

           

           

           Moderate recreational use of the waterway

           

           

           

           Heavy recreational use BUT seasonal

           

           

           

           Heavy recreational use YEAR ROUND

           

           
  --- ---- --------------------------------------------------------------

Book 3: Absolute Risk Levels

**Check the block that best describes this condition in the waterway**

+-----------------------------------------------------------------------+
| **Traffic Conditions:**                                               |
|                                                                       |
| **Traffic Mix**                                                       |
+-----------------------------------------------------------------------+

  --- ---- --------------------------------------------------------------
           Predominantly a single use waterway serving one interest\
           (i.e., government, commerce, or recreation)

           

           

           

           Multiple use waterway (government, commerce, and / or
           recreation) BUT no conflicts occurring

           

           

           

           Multiple use waterway (government, commerce, and / or
           recreation) AND some MINOR conflict occurring

           

           

           

           Multiple use waterway (government, commerce, and / or
           recreation) AND MAJOR conflicts occurring

           

           
  --- ---- --------------------------------------------------------------

Book 3: Absolute Risk Levels

**Check the block that best describes this condition in the waterway**

+-----------------------------------------------------------------------+
| **Traffic Conditions:**                                               |
|                                                                       |
| **Congestion**                                                        |
+-----------------------------------------------------------------------+

  --- ---- --------------------------------------------------------------
           NO congestion ever occurs in the waterway

           

           

           

           Congestion ONLY occurs in small areas for limited times

           

           

           

           Congestion occurs regularly BUT flow of vessel traffic is NOT
           impeded

           

           

           

           Congestion occurs regularly AND flow of vessel traffic IS
           impeded

           

           
  --- ---- --------------------------------------------------------------

Book 3: Absolute Risk Levels

**Check the block that best describes this condition in the waterway**

+-----------------------------------------------------------------------+
| **Navigational Conditions:**                                          |
|                                                                       |
| **Winds**                                                             |
+-----------------------------------------------------------------------+

  --- ---- --------------------------------------------------------------
           Strong winds (20 knots sustained) occur LESS than twice a
           month AND well forecast

           

           

           

           Strong winds (20 knots sustained) occur MORE than twice a
           month BUT well forecast

           

           

           

           Strong winds (20 knots sustained) occur LESS than twice a
           month BUT without warning

           

           

           

           Strong winds (20 knots sustained) occur MORE than twice a
           month AND without warning

           

           
  --- ---- --------------------------------------------------------------

Book 3: Absolute Risk Levels

**Check the block that best describes this condition in the waterway**

+-----------------------------------------------------------------------+
| **Navigational Conditions:**                                          |
|                                                                       |
| **Currents**                                                          |
+-----------------------------------------------------------------------+

  --- ---- --------------------------------------------------------------
           Fastest tidal and / or seasonal currents are WEAK\
           (less than 2 knots)

           

           

           

           Fastest tidal and / or seasonal currents are MODERATE\
           (2 -- 5 knots)

           

           

           

           Fastest tidal and / or seasonal currents are STRONG\
           (over 5 knots) BUT do NOT affect maneuverability

           

           

           

           Fastest tidal and / or seasonal currents are STRONG\
           (over 5 knots) AND affect maneuverability

           

           
  --- ---- --------------------------------------------------------------

Book 3: Absolute Risk Levels

**Check the block that best describes this condition in the waterway**

+-----------------------------------------------------------------------+
| **Navigational Conditions:**                                          |
|                                                                       |
| **Visibility Restrictions**                                           |
+-----------------------------------------------------------------------+

  --- ---- --------------------------------------------------------------
           Restricted visibility (1/2 mile or less) occurs LESS than 24
           days a year

           

           

           

           Restricted visibility (1/2 mile or less) occurs MORE than 24
           days a year BUT usually persists LESS than 6 hours

           

           

           

           Restricted visibility (1/2 mile or less) occurs MORE than 24
           days a year BUT usually persists LESS than 24 hours

           

           

           

           Restricted visibility (1/2 mile or less) occurs MORE than 24
           days a year AND usually persists MORE than 24 hours

           

           
  --- ---- --------------------------------------------------------------

Book 3: Absolute Risk Levels

**Check the block that best describes this condition in the waterway**

+-----------------------------------------------------------------------+
| **Navigational Conditions:**                                          |
|                                                                       |
| **Obstructions**                                                      |
+-----------------------------------------------------------------------+

  --- ---- --------------------------------------------------------------
           NO obstructions, that is: ice never forms, no floating snags /
           deadheads, no dredging, and no fixed fishing gear

           

           

           

           Some obstructions BUT NOT affecting navigation

           

           

           

           Obstructions affecting SOME navigation

           

           

           

           Obstructions affecting ALL navigation

           

           
  --- ---- --------------------------------------------------------------

Book 3: Absolute Risk Levels

**Check the block that best describes this condition in the waterway**

+-----------------------------------------------------------------------+
| **Waterway Conditions:**                                              |
|                                                                       |
| **Visibility Impediments**                                            |
+-----------------------------------------------------------------------+

  --- ---- --------------------------------------------------------------
           NO visual impediments on the waterway

           

           

           

           Areas of the waterway where aids to navigation are obscured

           

           

           

           Areas of the waterway where vessel movements are obscured

           

           

           

           Areas of the waterway where BOTH vessel movements AND aids to
           navigation are obscured

           

           
  --- ---- --------------------------------------------------------------

Book 3: Absolute Risk Levels

**Check the block that best describes this condition in the waterway**

+-----------------------------------------------------------------------+
| **Waterway Conditions:**                                              |
|                                                                       |
| **Dimensions**                                                        |
+-----------------------------------------------------------------------+

  --- ---- ---------------------------------------------------------------
           Open roadstead; no waterway constrictions

           

           

           

           Constricted waterway where passing arrangements are routinely
           needed

           

           

           

           Constricted waterway with some SHORT stretches where large
           vessels generally avoid passing each other

           

           

           

           Constricted waterway with LONG stretches where some large
           vessel passing can't be avoided AND involves close quarters
           encounters

           

           
  --- ---- ---------------------------------------------------------------

Book 3: Absolute Risk Levels

**Check the block that best describes this condition in the waterway**

+-----------------------------------------------------------------------+
| **Waterway Conditions:**                                              |
|                                                                       |
| **Bottom Type**                                                       |
+-----------------------------------------------------------------------+

  --- ---- --------------------------------------------------------------
           Deep water throughout the waterway; no channel is needed;
           vessel breakdown unlikely to result in grounding or allision

           

           

           

           Soft bottom with NO hard obstructions outside channel

           

           

           

           Sand, shale, or some hard obstructions outside of channel

           

           

           

           Hard or rocky bottom lines the channel edges

           

           
  --- ---- --------------------------------------------------------------

Book 3: Absolute Risk Levels

**Check the block that best describes this condition in the waterway**

+-----------------------------------------------------------------------+
| **Waterway Conditions:**                                              |
|                                                                       |
| **Configuration**                                                     |
+-----------------------------------------------------------------------+

  --- ---- --------------------------------------------------------------
           No turns over 45 degrees AND no convergences

           

           

           

           One or more turns over 45 degrees BUT no convergences

           

           

           

           No turns over 45 degrees BUT waterway has convergences

           

           

           

           One or more turns over 45 degrees AND waterway has
           convergences

           

           
  --- ---- --------------------------------------------------------------

Book 3: Absolute Risk Levels

**Check the block that best describes this condition in the waterway**

+-----------------------------------------------------------------------+
| **Immediate Consequences:**                                           |
|                                                                       |
| ### Personal Injuries                                                 |
+-----------------------------------------------------------------------+

  --- ---- --------------------------------------------------------------
           NO passenger vessels (i.e., dinner cruises, charter fishing,
           passenger ferries, cruise ships) using the waterway

           

           

           

           ONLY small passenger vessels (less than 150 persons on board)
           using the waterway

           

           

           

           Large passenger vessels (more than 150 persons on board) using
           the waterway OCCASIONALLY

           

           

           

           Large passenger vessels (more than 150 persons on board) using
           the waterway DAILY

           

           
  --- ---- --------------------------------------------------------------

Book 3: Absolute Risk Levels

**Check the block that best describes this condition in the waterway**

+-----------------------------------------------------------------------+
| **Immediate Consequences:**                                           |
|                                                                       |
| **Petroleum Discharge**                                               |
+-----------------------------------------------------------------------+

  --- ---- --------------------------------------------------------------
           NO bulk petroleum cargo movements

           

           

           

           Bulk petroleum cargo movements via tank barge ONLY

           

           

           

           Bulk petroleum cargo movements via tank ships UNDER 40,000 GRT

           

           

           

           Bulk petroleum cargo movements via tank ships OVER\
           40,000 GRT

           

           
  --- ---- --------------------------------------------------------------

Book 3: Absolute Risk Levels

**Check the block that best describes this condition in the waterway**

+-----------------------------------------------------------------------+
| **Immediate Consequences:**                                           |
|                                                                       |
| **Hazardous Material Release**                                        |
+-----------------------------------------------------------------------+

  --- ---- --------------------------------------------------------------
           NO bulk hazardous material cargo movements

           

           

           

           Bulk hazardous material cargo movements via tank barge ONLY

           

           

           

           Bulk hazardous material cargo movements via tank ships UNDER
           40,000 GRT

           

           

           

           Bulk hazardous material cargo movements via tank ships OVER
           40,000 GRT

           

           
  --- ---- --------------------------------------------------------------

Book 3: Absolute Risk Levels

**Check the block that best describes this condition in the waterway**

+-----------------------------------------------------------------------+
| **Immediate Consequences:**                                           |
|                                                                       |
| **Mobility**                                                          |
+-----------------------------------------------------------------------+

  --- ---- ---------------------------------------------------------------
           Major marine casualty would NOT require a waterway closure

           

           

           

           Major marine casualty would result in a waterway closure BUT
           NOT likely to disrupt the shoreside marine transportation
           system

           

           

           

           Major marine casualty would result in waterway closure and
           cause MINIMAL disruption to the shoreside marine transportation
           system

           

           

           

           Major marine casualty would result in waterway closure and
           cause SIGNIFICANT disruption to the shoreside marine
           transportation system

           

           
  --- ---- ---------------------------------------------------------------

Book 3: Absolute Risk Levels

**Check the block that best describes this condition in the waterway**

+-----------------------------------------------------------------------+
| **Subsequent Consequences:**                                          |
|                                                                       |
| **Health and Safety**                                                 |
+-----------------------------------------------------------------------+

  --- ---- --------------------------------------------------------------
           NO bulk hazardous cargoes moving on the waterway

           

           

           

           Small population (under 50,000 people) near the waterway WITH
           bulk hazardous cargoes moving on the waterway

           

           

           

           Medium population (50,000 to 100,000 people) near the waterway
           WITH bulk hazardous materials cargoes moving on the waterway

           

           

           

           Large population (over 100,000 people) near the waterway WITH
           bulk hazardous materials cargoes moving on the waterway

           

           
  --- ---- --------------------------------------------------------------

Book 3: Absolute Risk Levels

**Check the block that best describes this condition in the waterway**

+-----------------------------------------------------------------------+
| **Subsequent Consequences:**                                          |
|                                                                       |
| **Environmental**                                                     |
+-----------------------------------------------------------------------+

  --- ---- --------------------------------------------------------------
           Less than 10% of the waterway is environmentally sensitive

           

           

           

           Between 10 -- 50% of the waterway is environmentally sensitive

           

           

           

           Between 50 -- 90% of the waterway is environmentally sensitive

           

           

           

           More than 90% of the waterway is environmentally sensitive

           

           
  --- ---- --------------------------------------------------------------

Book 3: Absolute Risk Levels

**Check the block that best describes this condition in the waterway**

+-----------------------------------------------------------------------+
| **Subsequent Consequences:**                                          |
|                                                                       |
| **Aquatic Resources**                                                 |
+-----------------------------------------------------------------------+

  --- ---- --------------------------------------------------------------
           Very little harvesting of aquatic resources from this waterway

           

           

           

           Moderate recreational fishing BUT little commercial harvesting
           of aquatic resources from this waterway

           

           

           

           Heavy recreational fishing OR moderate commercial harvesting
           of aquatic resources from this waterway

           

           

           

           Heavy recreational fishing AND heavy commercial harvesting of
           aquatic resources from this waterway

           

           
  --- ---- --------------------------------------------------------------

Book 3: Absolute Risk Levels

**Check the block that best describes this condition in the waterway**

+-----------------------------------------------------------------------+
| **Subsequent Consequences:**                                          |
|                                                                       |
| **Economic**                                                          |
+-----------------------------------------------------------------------+

  --- ---- --------------------------------------------------------------
           Economic impact of waterway closure affects ONLY port area

           

           

           

           Economic impact of waterway closure affects metropolitan area

           

           

           

           Economic impact of waterway closure affects wide region

           

           

           

           Economic impact of waterway closure affect entire nation

           

           
  --- ---- --------------------------------------------------------------