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Inventories
12 Months Ended
Dec. 31, 2019
Inventory Disclosure [Abstract]  
Inventories:

4.       Inventories:

The amounts shown in the consolidated balance sheets are analyzed as follows:

       December 31, 2018     December 31, 2019
Lubricants   $ 12,071   $ 12,293
Bunkers     15,365     38,860
Total   $ 27,436   $ 51,153