James123
New Member
Anyone any ideas where I could get some techy type information on shoring up yachts? Have tried some internet sites ,mainly rubbish or they witter on about damage control.
Shoring up
- Thread starter James123
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Talbot
Well-Known Member
welcome to the forums,, It would help if you could provide a bit more detail on exactly what you want to know.
James123
New Member
What I'm after is , is there any rules regarding the placing of side shores, eg how many shores should be used on a 45' yacht, if it isn't in a purpose made cradle.
I appreciate that this is rather generalistic but talking to other members of this fine sailing fraternity, they consider this part of maintenace preparation to be a bit of a "black art" leaving it to the yards.
I appreciate that this is rather generalistic but talking to other members of this fine sailing fraternity, they consider this part of maintenace preparation to be a bit of a "black art" leaving it to the yards.
Will
Well-Known Member
Not sure if it's a black art as such. The idea is to place the shores or chocks adjacent to a bulkhead, or failing this, a stringer. There is no limit to the number that you can have each side, but if you overdo it, you'll find it a bit tricky to antifoul etc! Around 7 or 8 per side would be about right on a 45 footer I'd have thought. Bear in mind that there shouldn't be too much weight on the chocks - this is taken by the keel - so therefore they shouldn't be hammered in too hard. Feel free to PM me if I can be of any further help.
Porthandbuoy
Well-Known Member
1) Make certain the location of the shores coincides with the frames and bulkheads inside your boat.
2) Get the yard to shore your boat up. That way if it all goes pear shaped, and she falls over, they and their insurers are liable.
3) Have you considered a cradle?
2) Get the yard to shore your boat up. That way if it all goes pear shaped, and she falls over, they and their insurers are liable.
3) Have you considered a cradle?
Talbot
Well-Known Member
As has already been said, the weight is held by the keel, thus the supports are designed to stop the boat falling sideways. However, their biggest problem is that the wind can cause the the boat to vibrate, and thus eventually cause the shores to fail. However, placing of the shores against a position on the hull where their is a major bulkhead, not only helps to take the stress, but also reduces the probability of a vibration caused failure. The purpose designed stands can use less props cause they are not so likely to be affected by the vibration failure. Some people put horizontal stringers between their props to provide additional support. However remember that the more supports you make, the safer the boat is, but also the harder to antifoul. I once saw the result of a gentleman removing all his props cause he wanted to antifoul completely!!!! if removing from one point, make sure you replace elsewhere.
The most important point is that of insurance. By doing it yourself, you may invalidate the insurance of both yourself and the yard.
The reason you kept getting damage control sites in your google was that shoring up is the process in damage control were you strengthen a bulkhead to take more weight than originally designed following flooding
The most important point is that of insurance. By doing it yourself, you may invalidate the insurance of both yourself and the yard.
The reason you kept getting damage control sites in your google was that shoring up is the process in damage control were you strengthen a bulkhead to take more weight than originally designed following flooding
James123
New Member
Many thanks to everyone who has responded.
stephenh
Well-Known Member
" However, their biggest problem is that the wind can cause the the boat to vibrate, and thus eventually cause the shores to fail."
From this always use wedges between the props and the boat, with long thin nails fasten the wedges to the props, leaving the head out so that later removal is easy.
If strong winds are expected nail s/w roofing battens from the top of each shore to the bottom of the next one .
If really strong winds then nail extra battens across these.
After a gale go round and check the wedges.
Spent 6 yrs doing it this way in Chi Marina - never had a boat fall over....
From this always use wedges between the props and the boat, with long thin nails fasten the wedges to the props, leaving the head out so that later removal is easy.
If strong winds are expected nail s/w roofing battens from the top of each shore to the bottom of the next one .
If really strong winds then nail extra battens across these.
After a gale go round and check the wedges.
Spent 6 yrs doing it this way in Chi Marina - never had a boat fall over....
Janpierce
New Member
Just been presented with this problem. My yard deceided to use a small narrow four post cradle to house my 38 ft Beneteau Oceanis. The cradle wouldnt fit so they hoiked out the screw adjusters and dropped the support tubes into the cradle sockets. The boat still wouldnt sit on its wing keel so a piece of 1/2 in ply 6" x 12" was put under that aft end of the keel. They said they would add wood pit props the next day but didnt, I reminded them a few days later at which two props per side were added aft but not cross batterned.
I need to find out who sets the standards for shoring boats as I'm sure their work inadequate. Can anyone help with this please? /forums/images/graemlins/confused.gif
My alternative is to mail their insurers a photograph of the work and ask them to approve it.
Sure they are responsible for any damage if it blows over but I'd rather not go thro all that hassle. So who sets the standards ???
I need to find out who sets the standards for shoring boats as I'm sure their work inadequate. Can anyone help with this please? /forums/images/graemlins/confused.gif
My alternative is to mail their insurers a photograph of the work and ask them to approve it.
Sure they are responsible for any damage if it blows over but I'd rather not go thro all that hassle. So who sets the standards ???
Lakesailor
Well-Known Member
I would put your concerns in writing and copy it to your insurer and ask for details of their insurer and tell them you've sent a copy to your solictor.
This should make them take your worries seriously. Then see what you can get them to do to make the job satisfactory.
If they tell you they always do it like this and never had a...........etc.etc.
you must point out that if there should be a failure yoiu will hold them responsible.
Take pictures, preferably with a camera that date stamps.
I was only talking the other day to someone about an Oceanis 311 which was on a rather floppy cradle last year at Ferry Nab on Windermere. The legs splayed so they (the owner and party) roped them together. In the storm in January it fell over. Disaster waiting to happen.
This should make them take your worries seriously. Then see what you can get them to do to make the job satisfactory.
If they tell you they always do it like this and never had a...........etc.etc.
you must point out that if there should be a failure yoiu will hold them responsible.
Take pictures, preferably with a camera that date stamps.
I was only talking the other day to someone about an Oceanis 311 which was on a rather floppy cradle last year at Ferry Nab on Windermere. The legs splayed so they (the owner and party) roped them together. In the storm in January it fell over. Disaster waiting to happen.
