Registered users don't see ads

Raising the boom

Discussion in 'Big Boats' started by CaptKimble, Nov 7, 2017. Add this thread to a FAQ

  1. CaptKimble


    Joined Jul 29, 2017
    92 posts, 30 likes
    Catalina 380
    US Los Angeles
    Has anyone got any experience raising the boom on a Catalina 380 Mk 1? The Admiral insisted on a high arched dodger and now I can't flatten out the leech so I either have to raise the boom or cut a wedge out of the mainsail. Thanks in advance:pray:

  2. jssailem


    Joined Oct 22, 2014
    4,541 posts, 1,341 likes
    CAL 35 Cruiser
    US Salem, Moored Port Everett WA
    You raise the boom your still going to need to cut the mainsail. Share a picture of your boom and goose neck. Will be able to share ideas.

  3. David in Sandusky

    David in Sandusky

    Joined Nov 8, 2007
    1,017 posts, 88 likes
    Hunter 27_75-84
    US Sandusky Harbor Marina, Lake Erie
    How many inches of clearance do you need? Modifying the dodger may be far better than raising the boom. (Including very careful negotiation with the Admiral, of course.) talking to a sailmaker about recutting your sail is the second choice. The luff (at the mast) gives far more power than the leach.

    Raising the boom is a key design change, and will probably lower the resale value of your boat.
    Curiosity: How high is your dodger above the cockpit floor? How tall is the Admiral? I would think that clearance under the boom would not be much of a problem on the 38?

    This picture makes the point:

  4. Scotty C-M

    Scotty C-M

    Joined Apr 11, 2012
    311 posts, 14 likes
    Cataina 400 MK II
    US Santa Cruz
    My brother did this modification on his Catalina 380. It worked out very well. One of the benefits of having the boom higher is that it allows the dodger to be higher. Getting in and out of the cabin can be uncomfortable if the dodger is low - so he really likes this modification. The boat looks great, not at all "top heavy", in my opinion. This is, of course, a very individual and subjective opinion. So, how did he do it?

    The goose neck was taken off. A new "collar" - with gooseneck - was fabricated that wrapped part-way around the mast at the desired location. It was attached and the boom then attached to it. The sail was recut with a bit of a "rounded" head section. When you look at the sail it just looks regular. The boat sails great, and there might be some loss of downwind speed because of the (slightly) less sail area, but I can't tell.

    The spar work was done at Svenson's yard in Alameda. The sail was recut at Doyle sails, also in Alameda. Anyone familiar with the SF Bay Area knows that these are two of the most respected shops around. So you can be sure the job is "ship-shape and Bristol fashion". It was a great modification. Hope this helps.

    Last edited: Nov 20, 2017
  5. CaptKimble


    Joined Jul 29, 2017
    92 posts, 30 likes
    Catalina 380
    US Los Angeles
    Thank you Scotty - it's on my list to talk to a local rigger about all of the above

NEW, updated Get Rid of Boat Odors
The bible of marine toilets and plumbing, expanded and updated for 2016!
Turn any toilet into a Raritan for a fraction of the cost
The Raritan LBA matches your existing bowl with the pump/plumbing of a PHII or PHC. save!
Gray Enterprises port gasket
Stop winter leaks. Compare our price!
Winch covers
Any brand, every size, any color!