Have you read Slieve's article on yuloh efficiency? There's a photo of a model ship in the Arsenal museum in Venice. The ship carries 14 yulohs, 7 per side. That idea might help with finding upper displacement limit for yuloh power.
What is the largest size vessel that could be moved with a yuloh? Is there anything to be gained from a larger surface area blade or steeper angle of attack in reference to force created? Thanks!
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