Cruising Sailors Forum Archive
I suspect the same. Unless the builder shows the rudders were up to a reasonable spec. 
In Response To: It looks to me like someone ()
It's fairly unique in that 2 rudders, both failed in two unrelated ways. Both of which simply say to me, that the internal rudder structure and the stock were undersized/built for the conditions that boat was in.
The rudders got pushed back to their limits-stops, then broadside to the flow, the rudders could not stand up to the rearward motion. I frankly don't see that force, no matter how powerful the push back, as something they shouldn't endure.
Messages In This Thread
- Catamaran abandoned 300 miles off Norfolk...
- “The rudder had somehow been bent,” he said. “It was useless.”
- I hope I never
- Just watched the CG video. Now I got even more questions..
- More from the Alpha website.
- Tarjan is a master of spin
- Can't go by
- A fertile field for critics. Here's the account from Doane....
- refreshing to have somebody reporting from the bilge when one of these boats is abandoned.
- It looks to me like someone
- I suspect the same. Unless the builder shows the rudders were up to a reasonable spec.
- I suspect the same. Unless the builder shows the rudders were up to a reasonable spec.
- It looks to me like someone
- Charlie replies to the sailing forums Peanut Gallery...
- As usual, an excellent, measured analysis from John Harries...
- refreshing to have somebody reporting from the bilge when one of these boats is abandoned.
- The definition of "massive"....
- I don't think it was cutting corners
- Forces only increase in reality not in direct proportion to change of weight, speed, area, etc in direct proportion
- I very much think it was cutting corners...
- I don't think it was cutting corners
- I'd put 1 1/2" on a 28'er.
- I know both Hank and Charlie and I have one question for them . . .
- I think Hank and Charlie would argue with you that they were not in the Atlantic in February...
- Exactly...
- Your unexamined beliefs are showing, Jon
- What are you sailing, Mark?
- A Manta 40
- You're making the wrong generalizations
- I dunno
- Well you are right about that...
- I dunno
- "Unexamined", perhaps - but not necessarily unobserved...(grin)
- What are you sailing, Mark?
- Your unexamined beliefs are showing, Jon
- if there was ever a case for the owner picking up the rescue bill, this is it.
- I think Hank and Charlie would argue with you that they were not in the Atlantic in February...
- Charlie Doane posted an excelelnt account of the abandonment at
- I would have thought that the boat could have been sailed
- Now, after all this talk...
- I have the price list
- Well those are tiny little rudders, surprised they noticed them missing...
- The rudder size is not unusually small at all
- Agreed
- Two of them -- I wonder about that...
- forereaching depends on sail balance
- They aren't evenly loaded.
- forereaching depends on sail balance
- Agreed
- Here is a monohull example
- Those rudders are a compromise required by shallow draft. Nevertheless, the Alpha rudders were under bui
- Of course it is a compromise
- So I have become more interested in this shaft diameter thing
- Can't sit still any longer...
- Many monohull spade rudder shafts are seriously undersized.
- Mark, do you know another Manta 40 owner on Doublewide
- Yes, I know Doublewide well
- Yes, I know Doublewide well
- Those rudders are a compromise required by shallow draft. Nevertheless, the Alpha rudders were under bui
- The rudder size is not unusually small at all
- “The rudder had somehow been bent,” he said. “It was useless.”
