Making a bridle to use a lift / hoist

[keadams]

I'm keeping my Com-Pac 16 on Lake Champlain this summer, and the easiest way in and out of the water is from trailer to hoist.
I'm planning to keep the mast raised all season.
Anyone have experience/suggestions for rigging a bridle?
Will the jib halyard rings be secure enough to support the weight of the entire boat?
-->Amateur hour, party of 1.

[mattman]

Jib halyard rings??? If you mean jib sheet fairleads then no I would not try that at all. Chainplates probably (we do that on the Y) but you would need a different set with extra holes for attaching the bridle.  You may want to look at the system for the San Juan 21's. Where I sail, they use a beam that goes inside the cabin up against the cabin top. I have never gone down to have a look however. Best of luck.

[Bob23]

Hey there Kea:
   I think if you want to lift the boat, why not make up a sling that would cradle under the boat?
It probably would in fact be 2 slings made of tow strap with rings at each end. You'd slide each one over each end of the boat, pull towards the center, tie together to keep from spreading and then they'd attach at a central point where it'd be hooked to the hoist. I really made that sound confusing, didn't I? Just think of the slings on a travel lift.
   I don't believe there is any attachment point, including the chainplates, that is strong enough to hold 2000 pounds. If you call the factory, they are incredibly helpful and may have more info.
Welcome to the site...stick around long enough and you'll aquire all kinds of useless information that you'll wonder how you lived without.
Bob23 and "Koiononia" 1985 23/2 in NJ

[MacGyver]

I have been in a ton of boats with it being my job and I dont think a compac could be lifted like you want.

It would have to have the sling setup as Bob23 talks about. That would be the way to go.
The cabin top wouldnt hold that weight either I dont believe..... I dont think they are made with that lift in mind.


They are made however to be slinged and also to be forklifted.

Mac

[skip1930]

I don't know about the CP-16's. No way would I use the 'Bull's Eyes' attached to the deck [for that very reason, pop the deck off the hull]. Secondly there are only 'limited' backing plates under the deck that the Bull's eyes are screwed into.

However my CP-19 has four stickers along the molded tow rail that say ' SLING ' .

The forward stickers are just ahead of the keel about 12 inches. Right inline with the closest vertical supports for the lifeline.
This being the case on a CP-19 a spreader bar would be necessary to prevent the straps pressing on the verticals.

The stern sling lifts the hull right as the keel breaks from the hull and heads toward the sloped/dropped keel. Right exactly at the end of the slide for the head sail cleat.

Basically both the CP-16 and CP-19 scaled alike so it figures that is where the slings should go.

Now to lift.  An open ended [to get around the mast] rectangle above the boat is necessary for the spreaders. So weld up something.

Slings can be purchased for under the boat, going up to the rectangle. You still need a crane or forget all this and use a Marine Travelift [made in Sturgeon Bay BTW].

I guess I'd use a ramp and trailer [without overhead interferences] or aTravelift because there seems to be no single point hoist to lift the rig and boat. Or as Mac says, use a fork lift with extended forks that reach stem to stern and can lower the forks lower then grade level. Or find a different marina with a useable ramp. Or buy a dock space.

Side Bar; We sailed our Star Boat off a trailer and had a single bronze ring screwed into the bottom of the cockpit at the balance point for a single point lift. The mast never came down.

skip.

[kickingbug1]

    mine has the bullseyes three of them, i think they were used on some boats to lower the deck portion onto the hull during assembly. dont----dont use them to lift the whole boat. cant think how bad that can be. its so easy to raise the mast i would just keep it on the trailer. or if you can keep it rigged on the trailer there isnt an easier boat to launch and retrieve.

[NateD]

From a different forum: http://forums.sailinganarchy.com/index.php?showtopic=43216

Sounds like those who lift keel boats with cranes without a bridle lift from the keel bolts. I'm not sure if you can drive large bolts into the keel, or whether they would have enough "grip" to hold the weight. Or you could chip out a bunch of the concrete ballast, drive some bolts into the remaining stuff to bond the new and old together, then pour in new concrete and sink a large eye bolt in that (maybe attached to an aluminum plate to spread out the weight to more concrete area).

[Bob23]

Sling, please.
Bob23

[Pacman]

Sling, please.
Bob23

+1 !

Harbor Freight has some lifting straps that would work just fine for not too much money.

Keep in mind that our boats are little and light.  A temporary sling could be made from some docklines with towels wrapped around them to protect the boat and bowlines to form the lifting loops. 

A sling is much safer and easier than attaching lines to the boat using hardware that was not designed for lifting.

[nies]

I have tried both, lifting by any thing but a sling will damage the boat by either tearing the connection point from hull or dropping the boat , a sling works great but be careful to have spread the straps at lifting point or you will put pressure of the sides of hull...............nies

[Pacman]

......but be careful to have spread the straps at lifting point or you will put pressure of the sides of hull...............nies

Our club uses a spreader bar with hooks on the ends for the straps and a pick-up point in the middle.

It actually makes the job of setting the slings easier too.

[keadams]

Thanks for the suggestions!
We were super successful-- had our first day out yesterday: