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      phlip replied to the thread Arcona 460 sinks.
      We have the vanilla rudder, and like yours it is amazingly powerful: We have had a few moments where I thought a broach was inevitable...
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      phlip replied to the thread Arcona 460 sinks.
      Me too! - I just realised it's been 22 years since I got paid for doing structural engineering.
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      phlip replied to the thread Arcona 460 sinks.
      I have an A435 which appears to have an identical steering system to the 465 (except perhaps for the actual rudder). While this is...
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      phlip replied to the thread Arcona 460 sinks.
      Not quite right: the second moment of area is proportional to the _stiffness_ (for the usual "elastic plane-sections-remain-plane"...
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