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#1
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Supporting a boat by its mast.
From other members of the news group thoughts and
experience am I missing something or is this something that can be carried out providing there is care with a reasonable degree of ease and safety. The plan is to block of the foot of the keel and secure ropes from the top of the mast out to the sides at about 45 degrees to hold the boat upright so the support pads on the wintering cradle can be lowered to allow unhindered access to apply the 4 plus coats of epoxy coating to the under sides. Or has anyone any other suggestions of a better way to support the boat whilst it is epoxied. The boat weight is around 10 ton with a 50 foot plus mast and a moderate keel that is level bottom. All thoughts very much appreciated I have not seen or done or attempted any thing like this before. |
#2
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Supporting a boat by its mast.
I've done this when I beach my boat for bottom scrubbing or when I'm on a
"Grid". (If I'm on a Grid, there is usually a set of pilings to lean against on one side but it is still a good idea to run a halyard off that side to make sure she has a list in the direction of the piling as the tide goes out.) You should be ok on the hard, however it might depend on how your boat is built. If it is an older wooden boat, you may need the support of stands to help keep her shape. The frame and keel structure relies on support distributed over the entire under water surface, not just the keel. The keel should support only about 50% while the side supports the remainder.. (this is a general rule of thumb for steel ships in dry dock.) If your boat is fiberglass and has a fin or attached keel, you also should be using a cradle of boat stands. Even then you need support of the stem and stern. There should be no problem using the mast and rigging to keep the boat upright, as long as she is landed and maintained in a vertical conditions. I wouldn't recommend moving a lot of fuel or weight around if your just holding her with halyards. -- My opinion and experience. FWIW Steve s/v Good Intentions |
#3
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Supporting a boat by its mast.
I've done this when I beach my boat for bottom scrubbing or when I'm on a
"Grid". (If I'm on a Grid, there is usually a set of pilings to lean against on one side but it is still a good idea to run a halyard off that side to make sure she has a list in the direction of the piling as the tide goes out.) You should be ok on the hard, however it might depend on how your boat is built. If it is an older wooden boat, you may need the support of stands to help keep her shape. The frame and keel structure relies on support distributed over the entire under water surface, not just the keel. The keel should support only about 50% while the side supports the remainder.. (this is a general rule of thumb for steel ships in dry dock.) If your boat is fiberglass and has a fin or attached keel, you also should be using a cradle of boat stands. Even then you need support of the stem and stern. There should be no problem using the mast and rigging to keep the boat upright, as long as she is landed and maintained in a vertical conditions. I wouldn't recommend moving a lot of fuel or weight around if your just holding her with halyards. -- My opinion and experience. FWIW Steve s/v Good Intentions |
#4
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Supporting a boat by its mast.
If your boat is fiberglass and has a fin or attached keel, you also should be using a cradle of boat stands. Even then you need support of the stem and stern. snip Yes, the boat is fiberglass with attached keel. beryl g |
#5
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Supporting a boat by its mast.
If your boat is fiberglass and has a fin or attached keel, you also should be using a cradle of boat stands. Even then you need support of the stem and stern. snip Yes, the boat is fiberglass with attached keel. beryl g |
#6
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Supporting a boat by its mast.
beryl george wrote:
The plan is to block of the foot of the keel and secure ropes from the top of the mast out to the sides at about 45 degrees to hold the boat upright so the support pads on the wintering cradle can be lowered to allow unhindered access to apply the 4 plus coats of epoxy coating to the under sides. To what do you propose to tie the other ends of the ropes? Or has anyone any other suggestions of a better way to support the boat whilst it is epoxied. Wouldn't it be simpler just to run ropes from the bottom corners of the cradle frame to strong points on deck? |
#7
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Supporting a boat by its mast.
beryl george wrote:
The plan is to block of the foot of the keel and secure ropes from the top of the mast out to the sides at about 45 degrees to hold the boat upright so the support pads on the wintering cradle can be lowered to allow unhindered access to apply the 4 plus coats of epoxy coating to the under sides. To what do you propose to tie the other ends of the ropes? Or has anyone any other suggestions of a better way to support the boat whilst it is epoxied. Wouldn't it be simpler just to run ropes from the bottom corners of the cradle frame to strong points on deck? |
#8
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Supporting a boat by its mast.
To what do you propose to tie the other ends of the ropes? snip To the cradles of surrounding boats. Or has anyone any other suggestions of a better way to support the boat whilst it is epoxied. Wouldn't it be simpler just to run ropes from the bottom corners of the cradle frame to strong points on deck? Would not rope stretch be a possible potential problem with such a heavy boat. |
#9
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Supporting a boat by its mast.
To what do you propose to tie the other ends of the ropes? snip To the cradles of surrounding boats. Or has anyone any other suggestions of a better way to support the boat whilst it is epoxied. Wouldn't it be simpler just to run ropes from the bottom corners of the cradle frame to strong points on deck? Would not rope stretch be a possible potential problem with such a heavy boat. |
#10
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Supporting a boat by its mast.
beryl george wrote:
From other members of the news group thoughts and experience am I missing something or is this something that can be carried out providing there is care with a reasonable degree of ease and safety. The plan is to block of the foot of the keel and secure ropes from the top of the mast out to the sides at about 45 degrees to hold the boat upright so the support pads on the wintering cradle can be lowered Well, provided you have something very secure to anchor the far end of the ropes to, that would work fine. But you could shortcut the procedure and not take up nearly so much room by using some "legs" which could be simple stout poles, or something a bit more complex, secured to the boat's chainplates. That's what holds the mast up, so you'd be using the same part of the hull which is built ver very strongly... but you'd be saving all the stress on the rig. Fresh Breezes- Doug King |
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