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Unaudited Condensed Consolidated Statements of Operations (Parentheticals) - USD ($)
6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Commissions, related party $ 214,621 $ 238,016
Vessel operating expenses, related party 86,253 95,380
Gain on sale of vessel, related party 64,500
Other general and administrative expenses, related party $ 625,000 $ 936,126