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 Post subject: First Turtle!
PostPosted: Wed Jul 18, 2018 11:02 am 
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Site Rank - Deck Hand

Joined: Wed Jul 18, 2018 2:13 am
Posts: 3
I hit a surprise gust yesterday and went over fast, from 90' to 180' was around 30 seconds or at least it seemed. I sailboat with an electric motor pulled me up.
I've been reading quite a bit today and I wonder about the seals on my mast and the buoyancy of it.
Can anyone tell me what seals? If I drop the mast with some silicon caulk in hand will it be obvious?
Thanks!
Gene


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 Post subject: Re: First Turtle!
PostPosted: Wed Jul 18, 2018 12:49 pm 
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Site Rank - Old Salt

Joined: Wed May 25, 2011 3:15 pm
Posts: 524
Location: Buffalo, NY
The mast is sealed for the most part by rivets and rivet caps, with maybe a small amount of sealant around some of the attachments. Every rivet in the mast, at the masthead, the mast tang, the sail feeder, the mast rotator, the diamond wire anchor points, the downhaul sheave and jam cleat, and the mast base, could potentially be a source of a leak. If you have a comptip, that's also very possibly a location for a leak.

Best way to tell is to take your mast into a swimming pool or by the beach on a calm day and submerge it in the water, and check for air bubbles coming from any of the rivets or fittings. Once you narrow down where it's leaking from, drill out and replace the rivets & rivet caps, with a dab of caulk or sealant behind them.

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Mike
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'79 H18 standard 'Rocketman II' sail #14921


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 Post subject: Re: First Turtle!
PostPosted: Mon Jul 30, 2018 4:41 pm 
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Site Rank - Old Salt

Joined: Wed Jul 06, 2005 2:15 pm
Posts: 1161
Location: Oakland, CA
Did you need help righting from a capsize? That is where you will have the most difficulty raising the mast if it has water in it.

Check the mast for holes by dunking it in a lake, or just visually looking for holes in the mast. Then seal with caulk and/or rivets.

Turtling your boat does not always mean you have a leaky mast; usually it means the wind on the tramp pushed it down. After regrouping from a capsize, try to point the bow into the wind as much as you can. One technique is to swim to the bow and hold it while the boat weather-vanes out of the wind, which usually keeps the boat from turtling.

Righting from a turtle isn't that big of a deal, usually. Just stand on the leeward hull with the righting line and lean. When the wind gets under the tramp then it helps bring the boat to a capsize position. Then right like you would from a capsize.


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 Post subject: Re: First Turtle!
PostPosted: Tue Jul 31, 2018 8:33 am 
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Site Rank - Old Salt

Joined: Mon Jul 04, 2005 10:13 am
Posts: 955
Location: Nepean S.C. Ottawa, Canada
So you are sailing along on a warm day, and in the sunshine, the black mast picks up heat.

The next thing is that in a gust of wind, the H18 capsizes, and the mast falls into the cool water.
Shlurp, the hot mast will suck in cool water....and you have a problem.

This is why it is important to seal the mast, and check the seals from time to time.

I took the easy way out and mounted a Hobie Bob.....as the Ottawa River is not that deep, and a turtle would kill my comp tip.

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1989 Hobie SX18 Sail # 1947 "In Theory..."
'Only two things are infinite, the universe, and human stupidity. But I'm not sure about the former.'


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 Post subject: Re: First Turtle!
PostPosted: Wed Aug 01, 2018 5:30 am 
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Joined: Wed May 25, 2011 3:15 pm
Posts: 524
Location: Buffalo, NY
Which is also part of the reason I really like my clear anodized aluminum. It doesn't get hot in the sun. I haven't sailed any of the black anodized boats, so I'm not sure just how much it heats up, but it seems like it would get fairly hot in the bright sun.


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