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Deferred Income
 12 Months Ended
Dec. 31, 2019
Text Block [Abstract]  
Deferred Income
9.
Deferred Income
The amounts shown in the accompanying consolidated balance sheets amounting to $5,191,654 and $2,843,994 represent cash related to time and bareboat charter revenues received in advance as of December 31, 2018 and as of December 31, 2019, respectively.