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Is this a problem?

Discussion in 'Big Boats' started by Jwhy, Oct 8, 2017. Add this thread to a FAQ

  1. Jwhy

    Jwhy

    Joined Feb 11, 2013
    70 posts, 3 likes
    Catalina 30
    US Richmond
    While changing the furler line on my Catalina 34 I saw the crack in the chain plate for the forestay. Should I do something about it? IMG_0659.JPG
     


  2. jssailem

    jssailem

    Joined Oct 22, 2014
    3,761 posts, 855 likes
    CAL 35 Cruiser
    US Salem, Moored Port Everett WA
    That is not good. It appears the crack in along the weld line. This is a weakness. I would repair before I took the boat out in anything but mild conditions. A mast coming down can be a real bad day. The crack is a path for rust to begin. A dye test would be a way of confirming how far the crack has progressed.
     


  3. Bill Roosa

    Bill Roosa

    Joined Jun 6, 2006
    6,905 posts, 116 likes
    Hunter 40.5
    US Harrington Harbor North, MD
    Well it is hard to tell as it does not look like a weld line to me but a groove. Are there two pieces in this picture, The thin vertical on the left and the piece that is facing the camera? could be the paint has just parted due to what I'd be more concerned about and that is the whole thing is pulling out of the deck......and that is never good. check below decks also for the state of the connections there.
     


  4. jssailem

    jssailem

    Joined Oct 22, 2014
    3,761 posts, 855 likes
    CAL 35 Cruiser
    US Salem, Moored Port Everett WA
    Bill. In my observation, the weld is from top to bottom in the image. It has then been ground down to smooth the look of the weld. The grind lines can be seen on both sides of the vertical crack and they are similar below the area that the vertical crack stops.
    What is greater in concern is the beginning of a horizontal crack about a 1/4 to 1/2 inch up from the bottom crack. This has rust associated with it and is an indication of metal failure. That is the start of failure for the piece and what will bring the mast down.
    Examine and repair or replace would be my action before I headed out on a 20 knot day fun sail with family and friends on SF Bay.
    It is going to fail it is just a mater of time and force. Better to catch it before it does more damage.
     


    Parsons likes this.
  5. DayDreamer41

    DayDreamer41

    Joined Oct 29, 2016
    592 posts, 199 likes
    Hunter 41 DS
    Un Michigan Port Huron
    How about a pic a bit further back to see the full component
     


    justsomeguy likes this.
  6. JohnVTX

    JohnVTX

    Joined Jul 14, 2015
    831 posts, 130 likes
    Catalina 30
    US Georgetown, TX Stillhouse Hollow Marina
    Do Not Sail until fixed
     


  7. Hayden Watson

    Hayden Watson

    Joined Apr 5, 2009
    396 posts, 62 likes
    Catalina '88 C30 tr/bs
    US Oak Harbor, WA
  8. markwbird

    markwbird

    Joined Nov 26, 2012
    712 posts, 105 likes
    Hunter 34
    US Berkeley
    Probably is a problem. The pic is so close I cannot tell but the crack is not supposed to be there.
     


    Parsons likes this.
  9. jviss

    jviss

    Joined Feb 5, 2004
    2,137 posts, 145 likes
    Tartan 3800
    US Westborough Westport, MA
    You have done a good job of inspection, and averted a disaster! That is a crack in the weld. Get the new part and install it, before you sail the boat again, is my recommendation.

    Check this description from the Catalina Direct page for the replacement (emphasis mine):

    The redesigned stem fitting fits the Catalina 320, Catalina 34, and Catalina 36. Multiple improvements have been incorporated into this design.

    Improvements:
    • Doubler at the top of the forestay tang has eliminated the transition where some have failed.
    • Thick full length, 3/8" stainless forestay tang takes the load to the hull without weak points.
    • The vestigial anchor rollers have been eliminated making room for a proper anchor roller. See "May we also suggest" below.
    • Gussets on either side of the deck plate have been eliminated. These supported the anchor rollers but were never part of the support for the forestay. They were however a location where cracks would begin.
    • This new stem fitting is a much cleaner and stronger design.
     


  10. jviss

    jviss

    Joined Feb 5, 2004
    2,137 posts, 145 likes
    Tartan 3800
    US Westborough Westport, MA
    Where's Stu Jackson? Too bad you can't tag people on comments here, as in JIRA, or Facebook, so he'd get a notification that I'm mentioning him!
     


  11. Stu Jackson

    Stu Jackson

    Joined Feb 26, 2004
    19,564 posts, 394 likes
    Catalina 34
    US Maple Bay, BC, Canada
    Hayden's right, no need to pile on. :)
     


    jssailem and jviss like this.
  12. justsomeguy

    justsomeguy

    Joined Feb 20, 2011
    5,793 posts, 592 likes
    MacGregor, Island Packet 35
    US Tucson, AZ/San Carlos, MX
    @jviss , you can. The @ symbol, following up with user name.

    Unless the user has alerts turned off, of course.
     


  13. Hayden Watson

    Hayden Watson

    Joined Apr 5, 2009
    396 posts, 62 likes
    Catalina '88 C30 tr/bs
    US Oak Harbor, WA
    This photo from Catalina Direct looks like a more complete view of what was shown in the OP photo. That is scarier than I thought.
     

    Attached Files:



  14. jviss

    jviss

    Joined Feb 5, 2004
    2,137 posts, 145 likes
    Tartan 3800
    US Westborough Westport, MA
    Thanks! Don't know why I didn't just try that, that's how it's done in JIRA and FB.
     


  15. jviss

    jviss

    Joined Feb 5, 2004
    2,137 posts, 145 likes
    Tartan 3800
    US Westborough Westport, MA
    Wow!
     


  16. DayDreamer41

    DayDreamer41

    Joined Oct 29, 2016
    592 posts, 199 likes
    Hunter 41 DS
    Un Michigan Port Huron
    E-gads! that doesn't look good at all
     


  17. jssailem

    jssailem

    Joined Oct 22, 2014
    3,761 posts, 855 likes
    CAL 35 Cruiser
    US Salem, Moored Port Everett WA
    My thoughts exactly once I enlarged the image and looked at the detail.
    Ever wonder how many boats are in the marina's with similar conditions that no one suspects?
     


  18. Hayden Watson

    Hayden Watson

    Joined Apr 5, 2009
    396 posts, 62 likes
    Catalina '88 C30 tr/bs
    US Oak Harbor, WA
    One of the joys of older boats. 3 years ago I pulled the rig and replaced all standing rigging. while I as at it I pulled all chainplates and inspected and passivated them with Wichinox. I replaced most of the tangs and any other parts that were suspect. Then I stripped and repainted the mast and boom. I like to sail hard and now have much greater confidence in the rigging.
     


    jviss likes this.
  19. Roland5048

    Roland5048

    Joined May 12, 2004
    835 posts, 194 likes
    Hunter Cherubini 30
    US New Port Richey
    Just posted about this in another thread. Had my stem-head ( that's what it's called) snap a couple of years ago while running downwind ( thankfully). Replace ASAP. Do not go out until done. A good machine shop can replicate one for you. Secure the mast with a halyard run forward before you take this one off.
     


  20. jviss

    jviss

    Joined Feb 5, 2004
    2,137 posts, 145 likes
    Tartan 3800
    US Westborough Westport, MA
    Not for the $250 CD will sell you on for!
     



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