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Inventories (Table) (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Inventories [Abstract] |  |
Lubricants | $ 313 | $ 328
Gas cylinders | 78 | 63
Bunkers | 259 | 270
Total | $ 650 | $ 661

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