What is this called.

[Sneaky Pete]

I have this on the boom. Could it be used for securing reef line. If so what is it called and where could I purchase one.

Thanks.

 

[Ammonite]

It's a Selden reef slider for the boom. It's been discontinued. See here
Selden T-25 Reef Slider - VR Super Store
As I understand it it's supposed to stop the reefing lines on a slab reefing set up from sliding along the boom, but since this doesn't generally happen, most people don't bother with them. At least that's what my local Selden agent told me. I've never used mine.

 

[KevinV]

It's a "bash your head on something else superfluous on the boom" device.
I have something similar in stainless, it does what it says on the tin.

 

[LittleSister]

It's for hanging a hurricane lamp over the cockpit.

 

[Sneaky Pete]

It's for hanging a hurricane lamp over the cockpit.

Could hang my anchor light from it.

 

[Ian_Edwards]

They seem to be available here - at price: Yacht Boom Spares

If they are as "useful" as other suggest, they may pop up on eBay and similar sights, now you know what they are it might be worth s Google search.

 

[dunedin]

I think they might have been more useful when mainsails were slotted into a track along the foot, as more difficult to take reefing lines round the boom.
Now that most sails are loose footed, taking the reef lines round the boom is simpler and stronger, hence these become largely redundant.

 

[William_H]

It's a "bash your head on something else superfluous on the boom" device.
I have something similar in stainless, it does what it says on the tin.

Yes I think it is important to reduce protrusions on a boom which may contact a head. A smooth ali boom will hurt but a protrusion will penetrate. ol'will

 

[fredrussell]

Yes I think it is important to reduce protrusions on a boom which may contact a head. A smooth ali boom will hurt but a protrusion will penetrate. ol'will

Very true, this. My boat neighbour spent 8 hours in A & E due to a fitting on the boom opening him up, during a crash gybe that would otherwise have left him with just a bit of a headache.

 

[William_H]

On this boom theme I have a while back got a piece of carbon fibre mast and modified it for a new boom. I have two embedded blocks on the top of the boom. One for a reef and one for outhaul. Attatchement of main sheet half way along and vang are by loops of webbing. So light weight and smooth. But I can tell you it still hurts when it hits you. Mostly when facing in to wind. A gybe isn usually well coodinated. (get your heads down_) But at least you remain conscious to curse at it. ol'will