For what reason is the mast profile of the HAPPY CAT so extremely rigid dimensioned?

The HAPPY CAT  comes with a fairly large mainsail. To be able to use this large area as efficiently as possible requires a very strong mast. Static calculation and extensive research has led to a mast profile that allows most effective utilization of the mainsails maximal performance right to the top of the mast. The connection elements are not round but of square design for maximal strength and safety.

If the mast were not sufficiently rigid, it would be lighter, but would have three serious drawbacks:

 

  • Due to the soft mast, the entire stability of the rig would suffer. As a result, the jib at the front (luff) would make a large bend “sickle” and thus the close hauled sailing characteristics would suffer considerably.

 

  • A soft mast would bend strongly towards the lee at the top and thus the mainsail would also open in the upper area – twisting strongly into the wind – and much power would be lost. The large sail area would be for nothing.

 

  • An insufficient stiff mast would present great danger when encountering conditions of strong wind. There would be not enough reserves and the mast could deform or even break.
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