The crane I use to step and unstep is a simple jib crane that rotates. First step is to follow the arc and place the sawhorses or dolly down where the mast will rest. The second is to tie the boat up so the arc is on centerline about 2' behind the mast.
I use a 1" rope, make a large loop around the mast, and a 3' tail with a smaller loop in it. The lower shrouds are completely off and inside the mast loop. The smaller loop is hooked onto the crane hook, and the mast loop is slid up the mast until the front of the loop is a couple of inches below the spreaders. On my C&C 30, maybe different with yours, the lower shrouds attach to tangs just below the spreader brackets. With the lower shrouds inside the loop I can make sure the rope doesn't jam up inside the tang. The free end of the rope is tied below the boom casting on the mast, snugged up a bit so the loop does not exert force on the spreaders. The design is to have all the vertical force be on the hitch below the boom casting and the loop keeping the rope near the mast. It is good to have a bit of play, depending on the crane - waves - wind, so that the crane can stay away from the mast and wind instruments - windex. I free the forestay, backstay upper shrouds ( I am assuming you have already disconnected the wiring ). The mast is lifted just enough to clear the mast base casting, and the mast does lean a slight bit forward. We hoist it up through the deck, allow it to lean a bit more forward and the head away from shore, then rotate the crane around and walk the butt onto shore. The mast is lowered to horizontal as it is being swung around to the dolly. I am sure the spreader fitting on the mast is strong enough to hoist with, though it is not required on Windburn. The balance point is slightly below the spreaders for me. Could be different on other 30-1, depends on the weight of the rigging, instruments and type of forestay. Michael Brown Windburn C&C 30-1 Message: 5 Date: Wed, 8 Jan 2014 11:48:37 -0800 (PST) From: "Ronald B. Frerker" <[email protected]> To: "[email protected]" <[email protected]> Subject: Re: Stus-List unstepping mast Message-ID: <[email protected]> Content-Type: text/plain; charset="iso-8859-1" Thanks Derek. It seems like the consensus is that the spreader brackets have the strength to hold the mast weight, so balance is the main issue. I'll look at the diagram. Thanks all, Ron Wild Cheri C&C 30? STL ________________________________ From: Tortuga <[email protected]> To: [email protected] Sent: Wednesday, January 8, 2014 1:33 PM Subject: Re: Stus-List unstepping mast There's a diagram in the manual for the C&C30 mk 1. I've sent it off-list. Hope it's helpful. Derek Kennedy C&C30 mk1- Tortuga Ballantyne's Cove NS Date:?Wed, 8 Jan 2014 08:54:38 -0800?(PST) From: "Ronald B. Frerker" <[email protected]> To: "[email protected]" <[email protected]> Subject: Re: Stus-List unstepping mast Message-ID: ? ? ? ? <[email protected]> Content-Type: text/plain; charset="iso-8859-1" So does everyone usually slide the strap or line up to the spreaders to lift the mast out? I've been doing that, but the marina operator thinks that's wrong. ?He suggested that I keep it a few inches lower and tie off the "tail" of the line to the gooseneck. ?I tried that and the mast was completely unbalanced and rubbing badly on the deck collar. ?I quickly dropped it back and used the spreaders again. I have to admit, I'm not sure the spreaders were meant for that load. What do others do? Ron Wild Cheri C&C 30? STL
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