this post was submitted on 28 Sep 2025
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Sailing

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Spending my evening trying to identify a seemingly obscure piece of boom shackle tackle. (infosec.pub)
submitted 3 months ago* (last edited 3 months ago) by kboyd@phpc.social to c/sailing@lemmy.world
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Spending my evening trying to identify a seemingly obscure piece of boom shackle tackle.

Or, more specifically, a boom vang that seems to have a harness that goes around the boom, instead of a bracket that attaches to the boom.

Can't seem to find the right words to describe it ... but the existing one is fraying & could fail.

#sailing @sailing

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[–] Amgine@mamot.fr 1 points 3 months ago (1 children)

@kboyd @sailing

For rigging, try attaching the loop to the purchase, then lead the strap up and out the *top* slot, back in through the *bottom* slot, then the other side however feels comfortable for you. This should result in the lead to the purchase being more-centred, resulting in less twist to the boom.

As the last image suggests, the strap should be kept as short as possible. This gives the largest range for the purchase to tension.

Ask me about your purchase later..

[–] kboyd@phpc.social 1 points 3 months ago (1 children)

@Amgine @sailing the thing is, I think the strap is supposed to be a contained loop. I don't think there's supposed to be a dangling piece; as far as I can tell from looking at it, it was sewn into place in the current form, and then the strap snapped off at a later point in time. Maybe I'm wrong? But the dangling bit doesn't feel right.

[–] Amgine@mamot.fr 1 points 3 months ago (2 children)

@kboyd @sailing

Okay, that would be weird, but I can see someone doing it. Do those two pieces of stainless just hook into the boltrope slot? If so, then yes, I think you are correct.

[–] kboyd@phpc.social 1 points 3 months ago (1 children)

@Amgine @sailing It seems they do, yes. In hindsight I should have tried to see if they were easy to unclip. (That would be my expectation, and would simplify repairs if so.)

[–] Amgine@mamot.fr 1 points 3 months ago (2 children)

@kboyd @sailing

That will certainly make it easier to repair, or remove, if it works that way. Another way it may work is as a sort of shim, sliding into the bolt rope slot and with thinned edges - but that will likely require removing the boom from the gooseneck to remove it.

[–] kboyd@phpc.social 1 points 3 months ago

@Amgine @sailing uh oh. That would be "cut the strap and screw a proper bail or weld an attachment point in its place" territory, IMHO.

[–] Amgine@mamot.fr 1 points 3 months ago

@kboyd @sailing

Now I am super curious, but I am on the mainland at the moment so I cannot drive down to see it...