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Voyage and Vessel operating expenses - Vessel operating expenses (Table) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Voyage And Vessel Operating Expenses |  |  |
Crew wages and related costs | $ 109,311 | $ 103,701 | $ 80,360
Insurances | 13,002 | 10,311 | 7,544
Maintenance, repairs, spares and stores | 37,947 | 25,675 | 26,368
Lubricants | 10,669 | 9,833 | 8,494
Tonnage taxes (Note 16) | 2,103 | 2,087 | 1,506
Pre-delivery and Pre-joining expenses | (0) | 1,507 | 1,234
Miscellaneous | 5,511 | 6,948 | 3,366
Total vessel operating expenses | $ 178,543 | $ 160,062 | $ 128,872

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