Apps like Seabook

Here are some great alternatives to Seabook by Ozgur Dogan GUNES :
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Maritime Dictionary & Academy
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Primo Nautic: Marine Academy
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i-Boating:Marine Navigation
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Vessel Tracking - Ship Radar
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Ship Tracker - Live Marine Rad
Ship Tracker - Live Marine Rad
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mKart Marine Navigation
mKart Marine Navigation
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ColRegs: Rules of the Road
ColRegs: Rules of the Road
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COLREG 72: safety at sea
COLREG 72: safety at sea
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Maritime Academy: ICS Flags
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Master-Nav: Colregs
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