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Updated: June 10, 2025
As, I doubt not, the reader is now sufficiently interested to ask the questions, How are self-righting and self-emptying accomplished? I will try to throw some light on these subjects. First, as to self-righting. You are aware, no doubt, that the buoyancy of our lifeboat is due chiefly to large air-cases at the ends, and all round the sides from stem to stern.
The rudder descends considerably below the keel to give it more power and has to be raised when the boat is being launched. The shaded parts of the diagrams show the position and form of the air-cases which prevent a lifeboat from sinking.
In short, to use an expression which may appear paradoxical, she can carry more than she can hold has floating power sufficient to support more than can be got into her. The third her self-righting quality is also due to air-chambers, in connection with a heavy keel. There are two large and prominent air-cases in the lifeboat one in the bow, the other in the stern.
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