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Commitments and Contingencies (Tables)
 12 Months Ended
Mar. 31, 2014
Schedule of Vessel Commitments to Acquire and Construct New Vessels, by Vessel Type

The table below summarizes the company’s various vessel commitments to acquire and construct new vessels, by vessel type, as of March 31, 2014:

 

(In thousands, except vessel count)    Number of
Vessels		      Total Cost     

Invested

Through
3/31/14

     

Remaining

Balance

3/31/14

        

Vessels under construction:

               

Deepwater PSVs

      23       $     708,883         196,468         512,415      

Towing supply vessels

      6         116,288         55,163         61,125      

Other

      1         8,014         8,014         —        

Total vessel commitments

      30       $     833,185         259,645         573,540