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Thread: Sea Wisdom: What happened out there?

  1. #21
    Join Date
    Jul 2019
    Posts
    7

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    Quote Originally Posted by AlanH View Post
    It looks to me like the steering box, the fiberglass one...the box itself is plenty strong enough. The box didn't fail, the attachment of box to deck failed.

    Do I have that right?
    The attachment between the box and the deck could be the weakest link here, which would be a shame as a design flaw. I'm waiting to hear back from the yard and the surveyor.

  2. #22
    Join Date
    Sep 2007
    Posts
    2,744

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    It's surprising that there were no mechanical fasteners.

    If you duplicate the metal "box" seen on the other boat, I'd go up a thickness on the material. While the SS plate on deck is impressive, I assume the box underneath is aluminum and it looks light, especially with its open end.
    .
    Last edited by BobJ; 07-16-2019 at 09:06 AM.

  3. #23
    Join Date
    May 2019
    Location
    Corte Madera
    Posts
    10

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    Wow... that's a beautiful solution! If that a custom fabrication, or something available from a manufacturer?
    m

  4. #24
    Join Date
    May 2009
    Location
    San Francisco
    Posts
    41

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    Interesting... surprised the upper rudder bearing is not affixed to the cockpit sole... so its putting the sole in compression in the direction the sole is strongest... the way most boats do it. This "box" below the sole so the bearing is torquing the box - puts a lot of force into tension on an epoxy bond. And the distance between the upper and lower bearings made shorter then if the upper bearing was affixed to the sole... dramatically increasing the forces on the upper bearing. I wonder if this is all about a sole mounted bearing being more expensive then they wanted to pay (complex larger casting?).

  5. #25
    Join Date
    Sep 2007
    Location
    Capitola,CA
    Posts
    1,908

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    Check out Bill Leary's excellent Safety at Sea Seminar. Note the Hinckley 42 sister to SEA WISDOM, ALCYONE from Santa Cruz, lost its upper rudder bearing in the Pac Cup and had to be towed to Hawaii. $$$
    https://pacificcup.org/sites/default...rol%202016.pdf

  6. #26
    Join Date
    Sep 2008
    Location
    SF Bay
    Posts
    208

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    Quote Originally Posted by sleddog View Post
    Check out Bill Leary's excellent Safety at Sea Seminar. Note the Hinckley 42 sister to SEA WISDOM, ALCYONE from Santa Cruz, lost its upper rudder bearing in the Pac Cup and had to be towed to Hawaii. $$$
    https://pacificcup.org/sites/default...rol%202016.pdf
    That is ALCYONE (Hinckley 42) with the retrofitted SS bearing housing in post #13 above.

    Tom P.

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