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Old 11 December 2005, 07:42   #1
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Lifting Ribs

What's the story on lifting ribs using normal boat slings?? I assumed this would not be a great idea even after deflating the tubes, and so got some chain which we wrap around the slings and attach to lifting points.This works fine.

A couple of recent comments elsewhere and the attached picture lead me to wonder??

Ian
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Old 11 December 2005, 07:48   #2
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Lifting ribs by slings puts alot of stress on the bonding between the sponsons and the hull. Best solution is to have some lifting points in the deck and then to lift with strops.

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Old 11 December 2005, 08:07   #3
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I have ordered my RIb with lifting eyes on the deck.
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Old 11 December 2005, 08:21   #4
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DE eyes have it!

however if you are using a sling then make sure the yard is using a spreader bar which helps to reliee the pressure on the toobs
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Old 11 December 2005, 08:23   #5
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Are lifting eyes normally recessed or do they stand proud of the deck?
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Old 11 December 2005, 09:18   #6
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Normally they are proud one set through deck a the front and a pair of eyes o the transom

I expect you can get slick recessed eyes but I like to have something to trip over!
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Old 11 December 2005, 09:25   #7
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Quote:
Originally Posted by Rogue Wave
I expect you can get slick recessed eyes but I like to have something to trip over!
I am looking forward to standing on them in bare feet!
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Old 11 December 2005, 09:29   #8
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Andy, there's all sorts of different types of lifting points - some do stand proud of the deck, some are recessed, and some are completely hidden inside a hatch. The important thing is that they are securely attached to a stong part of the hull's structure, not just the deck! Some have bolts that go completely through the hull and attach to a plate on the other side, which can look like a real mess if not planned carefully.

The spreader bar which Rogue Wave mentioned is essential for lifting any boat without lifting eyes, otherwise a crushing force will be applied to the hull.

When lifting a RIB using slings, always inflate the tubes hard. This will avoid damage at the flange where the tube is attached.
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Old 12 December 2005, 04:39   #9
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Our boats all come with lifting points as a standard fitting - we use the rear of the A frame and a lifting point inside the forward locker - nothing to trip over then!
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When a boat looks that good who needs tubes!!!
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Old 12 December 2005, 06:30   #10
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My ex-mil searider appears to have a lifting point that is part of the winch eye assembley - attached to the internal plate - this would seem to be a straightforward way of creating a lifting point assuming your boat has a bolted through winch eye
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