The fourteen wooden lifeboats on Titanic had capacity plates fixed to their forward inboard sides. The plates showed the nominal dimensions and capacity of the boat. By nominal I mean "as designed" not "as measured". The image below shows an actual photo of one of the 30 ft. lifeboat capacity plates and a drawing of both the 30 ft. and 25 ft. capacity plates. The numbers on the plates show the length, breadth, depth and cubic foot capacity of the boat.
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