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Go Back   SailNet Community > On Board > Gear & Maintenance
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  #1  
Old 08-08-2003
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divicolouis is on a distinguished road
mast raising and lowering

I have a 25'' aluminum mast mounted in a cabin top tabernacle and I am looking for ideas on being able to raise and lower the mast, singlehanded. Any ideas?
Thanks, Pierre
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Old 08-08-2003
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jbarros is on a distinguished road
mast raising and lowering

undo all but the aft shrouds, and loosen those.

undo the headstay, and tie a line onto it.

gently let it back onto the deck.

I just got my 24'' mast down. Of course, the mast was too long, so my tabernacle was useless, as the mast was sitting on the bottom of it, so I had to do some figiting to get it to work, but still, more spooky than hard.

I need to get a new tabernacle made. :
-- James
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Old 08-08-2003
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joub is on a distinguished road
mast raising and lowering

There a lot of considerations that need to be made. Does the mast lower forward or aft?
How many shrouds do you have (each side)?
If the mast lowers aft, are the spreaders slightly aft as well?
Do you have a gin pole if the mast lowers aft or do you use the boom as a fulcrum to lower it forward?
I can offer some suggestions if I know how your rig is setup.

Jim
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Old 08-08-2003
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divicolouis is on a distinguished road
mast raising and lowering

The owners manual shows one man on the forestay and another in the cockpit as the mast comes down aft. I think I need a pole foward to keep an angle on the forestay as the mast gets low. Plus I plan on leading the line through the bow cleat for more purchase. any idea

appx how much a 25'' mast weighs?
Thanks again, Pierre
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Old 08-08-2003
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joub is on a distinguished road
mast raising and lowering

At one time I had a 23 footer that I rigged to raise and lower the mast singlehanded. Here''s what I did.
Made a gin pole to act as a fulcrum from the base of the mast to just short of the forestay attach point. Attached the forestay to upper side of the gin pole with a shackle. Attached a line to the lower side of the gin pole, through a turning block and back to the winch in the cockpit. you may need a second block to provide a fairlead.

The gin pole will require a bridle running from each side of the forward end that is attached to the chain plates or a stanchion to keep the pole from flopping off to one side.

You can use the main halyard to to pull the mast aft as you control the line on the winch to lower the mast. The boom will end up in the cockpit so you will have to figure out where to put it while raising/lowering the mast. Raising the mast will be just the reverse. Attach the lowered mast forestay to the gin pole, fit the gin pole into the base of the mast, attach the raising/lowering line to the gin pole and winch it up.

One other factor that gets in the picture is as the shrouds lose their tension you have no lateral control of the mast other than to manhandle it best you can. If you want to get more sophisticated, you can rig a bridle to each shroud (I am assuming you have a single shroud) that attaches to the shroud at the same height as the mast pivot point at the base of the mast. This bridle should be lead forward a few feet and attached to something in line with the shroud attach point. When the mast starts to lower, the bridle will keep enough tension on the shrouds to provide some lateral support for the mast.

Hope this helps.

Fairwinds,
Jim
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Old 08-08-2003
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jbarros is on a distinguished road
mast raising and lowering

My 24'' mast (w/o boom) weighs about 50-75 lbs, if that. It''s A LOT lighter than I thought it would be. it''s more an issue of bulk than weight.

-- James
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