Kai Mattern

Latest Release

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  Weather Trainer App

  Marine weather skipper exams

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iPad & iPhone

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  Weather Trainer App

  Marine weather skipper exams

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  IALA buoyage B Trainer

  Marine IALA B Buoyage Trainer

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  Marine Rules of the Road

  COLREGs Collision Trainer

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  Marine IALA A Buoyage Trainer

  IALA A buoys Educational study

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  Marine Nav Lights Trainer

  COLREG rules revision

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