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Thread: Bow beam for 50 foot cat

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  1. #1
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    Default Bow beam for 50 foot cat

    Hi all, I have a question regards aluminum bow beams.

    How much do aluminum bow beams weigh "all up"; including A-frame and cable and chainplate on a mid 40's to 50 foot boat?

    Thanks.
    Paul.

  2. #2

    Default Re: Bow beam for 50 foot cat

    Quote Originally Posted by quickcat49 View Post
    Hi all, I have a question regards aluminum bow beams.

    How much do aluminum bow beams weigh "all up"; including A-frame and cable and chainplate on a mid 40's to 50 foot boat?

    Thanks.
    Paul.
    Not sure exactly but should be pretty easy to guestimate; length of pipe (150mm x 4mm about 5kg/m) or mast section add a bit (say 20%) for the A-frame (ends, welds etc), then 12mm SS wire and a bottle screw and some shackles. The wire and the bottle screw is pretty heavy. My guess 50-60kg.

  3. #3
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    Default Re: Bow beam for 50 foot cat

    Thanks, that's about what I figured, but without any direct experience, I thought it would be best to ask.
    Paul.

  4. #4

    Default Re: Bow beam for 50 foot cat

    Quote Originally Posted by quickcat49 View Post
    Thanks, that's about what I figured, but without any direct experience, I thought it would be best to ask.
    Paul.
    Don't forget to allow for the chain plates (anchor points) and all the nuts bolts washers inside that nobody sees. Got to be 5-6kg per side.

  5. #5
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    Default Re: Bow beam for 50 foot cat

    Yes, good point. I hadn't thought of that.

    Thank you Peter. I'll add another 10kg to my estimate.

    Paul.

  6. #6

    Default Re: Bow beam for 50 foot cat

    For the bridle anchor points I welded in some aluminium tangs. Made them oversize, so they can't pull through, fitted them from the inside, then welded them in. Not much weight in them really.

    I glassed the beam into the boat. Solid as a rock. Probably a couple of kilo's per side.

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