Knockdown Warning Indicator (Redux)

This week I continued developing a device that warns of the potential of a knockdown – the process by which an over-canvassed sailing ship is lain over on her beam-ends during a squall.  The potential for sinking at this point is high, especially if there are hatches open on the leeward side, so it is an event to be avoided.  As the reading of squall curves (from vessel stability booklets) is a skill rarely ...

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