off-balance sheet transactions contractual obligations as of december 31 , 2017 , our contractual obligations with initial or remaining terms in excess of one year , including interest payments on long-term debt obligations , were as follows ( in thousands ) : the table above does not include $ 0.5 million of unrecognized tax benefits ( we refer you to the notes to the consolidated financial statements note 201410 201cincome tax 201d ) . certain service providers may require collateral in the normal course of our business . the amount of collateral may change based on certain terms and conditions . as a routine part of our business , depending on market conditions , exchange rates , pricing and our strategy for growth , we regularly consider opportunities to enter into contracts for the building of additional ships . we may also consider the sale of ships , potential acquisitions and strategic alliances . if any of these transactions were to occur , they may be financed through the incurrence of additional permitted indebtedness , through cash flows from operations , or through the issuance of debt , equity or equity-related securities . funding sources certain of our debt agreements contain covenants that , among other things , require us to maintain a minimum level of liquidity , as well as limit our net funded debt-to-capital ratio , maintain certain other ratios and restrict our ability to pay dividends . substantially all of our ships and other property and equipment are pledged as collateral for certain of our debt . we believe we were in compliance with these covenants as of december 31 , 2017 . the impact of changes in world economies and especially the global credit markets can create a challenging environment and may reduce future consumer demand for cruises and adversely affect our counterparty credit risks . in the event this environment deteriorates , our business , financial condition and results of operations could be adversely impacted . we believe our cash on hand , expected future operating cash inflows , additional available borrowings under our new revolving loan facility and our ability to issue debt securities or additional equity securities , will be sufficient to fund operations , debt payment requirements , capital expenditures and maintain compliance with covenants under our debt agreements over the next twelve-month period . there is no assurance that cash flows from operations and additional financings will be available in the future to fund our future obligations . less than 1 year 1-3 years 3-5 years more than 5 years long-term debt ( 1 ) $ 6424582 $ 619373 $ 1248463 $ 3002931 $ 1553815 operating leases ( 2 ) 131791 15204 28973 26504 61110 ship construction contracts ( 3 ) 6138219 1016892 1363215 1141212 2616900 port facilities ( 4 ) 138308 30509 43388 23316 41095 interest ( 5 ) 947967 218150 376566 203099 150152 other ( 6 ) 168678 54800 73653 23870 16355 .
what portion of the expected payments within the next 12 months is allocated to the repayment of long-term debt?
( 1 ) includes discount and premiums aggregating $ 0.5 million . also includes capital leases . the amount excludes deferred financing fees which are included in the consolidated balance sheets as an offset to long-term debt . ( 2 ) primarily for offices , motor vehicles and office equipment . ( 3 ) for our newbuild ships based on the euro/u.s . dollar exchange rate as of december 31 , 2017 . export credit financing is in place from syndicates of banks . ( 4 ) primarily for our usage of certain port facilities . ( 5 ) includes fixed and variable rates with libor held constant as of december 31 , 2017 . ( 6 ) future commitments for service , maintenance and other business enhancement capital expenditure contracts. .