Comments by "" (@RedXlV) on "The Drydock - Episode 089" video.

With regard to disguising ships in port, it would seem like the obvious way to handle the fact that the enemy already knows what your port looks like would be to also use decoys. Something the Royal Navy was already doing to some effect with the demilitarized training ship Iron Duke (nearly identical in hull dimensions to an Revenge-class battleship) and a pair of merchant ships with wood and canvas fake superstructures.
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