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I spent a few hours on MB installing a overflow bottle for the coolant and greasing the sheet winches. A good day except I lost my glasses overboard in 6 metres. It had to happen eventually.
As I was rowing out I saw a new boat. Looks like a harbour boat, nothing onboard to suggest it is a passage maker. Sturdy things these vessels.
What is the consensus on the cause?
Quadrant Marine has the solution according to their website..
A badly rigged preventer possibly
The length of the boom from the mast to the break looks about the same as the distance to the side stays.
So I would say it's most likely from an uncontrolled gybe.
Not a great advert for Quadrant Marine!
Hard to tell from one picture.
It could well have just broken under vang load (ie not up to task). it looks like it probably snapped upwards from the way the alloy has beer canned horizontally at the bottom, maybe it hit a stay as Gravy said, then in its weakened state, snapped.
There's plenty of ways it might have happened though.
due to shaking a reefed main out with the topping lift and vang, still attached.
it snapped at the vang attachment point.
i learned the hard way.
Looks like the boom was either made from two pieces, or repaired, with a a stiffener added below the joint. If the vang is strut type, then sheet load could have broken it.
Its a pretty flimsy looking boom to start with, and look where the mainsheet attaches.
the aft half of the boom is unsupported, so it could have snapped trying to get leach tension with the rather powerful looking vang.
I bought a new boom for my Martzcraft 35 2 years ago, it's nearly double the diameter of that one. Sailmalker estimated size to suit sails. So does look very light weight to me.
Is it really called "Upyers"? What a tacky name -a bit like calling a boat "F%#k You".
If someone is going to sail around on a boat that is abusing everyone else then it's hard to feel sympathy when they break something.
