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Author Topic: I can't locate LHs crutch  (Read 2659 times)

tigertiger

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I can't locate LHs crutch
« on: January 09, 2008, 11:48:12 AM »

Ooohh err! missus. ::)

I am looking at plans of Lousie Heloise.

In the picture there is an item named 'crutch' (pen points to it)

And there are stiffening stantions to recive the crutches. To the left of the crtuch on the diagram, follow arrows backwards.

Where do the crutches fit. I cannot find any reference in the plans to where they will be situated. I have tried all planes but I assume they will be in the same plane as on the drawing i.e. the same as the deck.

Anybody any idea what the crutches are and where they fit??

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DickyD

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Re: I can't locate LHs crutch
« Reply #1 on: January 09, 2008, 12:04:22 PM »

Hi tt
Know nothing about sailing or sails but have found this.

Crutch Wooden or metal fitting into which the boom fits when not in use

http://www.sailingsoftware.co.uk/Almanac/almanac_glossary.htm#C

And this

When the sail is not set, a knee or piece of knee-timber, placed inside of a vessel, to secure the heels of the cant-timbers abaft, also the chock upon which the spanker-boom rests

http://www.sonrisayachting.com/52/en/Nautical_dictionary
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andrewh

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Re: I can't locate LHs crutch
« Reply #2 on: January 09, 2008, 01:08:22 PM »

TT

This looks from the drawing like a grounding crutch, which holds the boat upright if it is kept in a drying harbour

If this is the case it would normally be lashed/bolted/ fixed to both gunwales - and the length would be to the level of the keel so that the boat sits more or less upright.

does this seem possible?
andrew
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dreadnought72

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Re: I can't locate LHs crutch
« Reply #3 on: January 09, 2008, 01:25:27 PM »

Grounding crutch = Beaching legs? There should be two.

Andy
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Colin Bishop

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Re: I can't locate LHs crutch
« Reply #4 on: January 09, 2008, 01:28:59 PM »

AndrewH is right, it is a grounding crutch or leg. See pics below:
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tigertiger

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Re: I can't locate LHs crutch
« Reply #5 on: January 09, 2008, 01:55:14 PM »

If they are grounding crutches, where would they normally be stowed when not in use?
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Colin Bishop

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Re: I can't locate LHs crutch
« Reply #6 on: January 09, 2008, 02:16:57 PM »

Along the inside of the bulwarks I would imagine.
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andrewh

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Re: I can't locate LHs crutch
« Reply #7 on: January 09, 2008, 02:55:15 PM »

Or slung on the outside of the bulwarks

 - do any pictures of the full-size show them?
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Colin Bishop

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Re: I can't locate LHs crutch
« Reply #8 on: January 09, 2008, 03:01:56 PM »

I don't seem to have any showing them stowed. It's possible that some might pivot up and are secured further aft but for detachable ones I think it's more likely that they would be stowed inboard on a fishing boat as they might otherwise get in the way and would be vulnerable to being damaged or washed away in bad weather.
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wideawake

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Re: I can't locate LHs crutch
« Reply #9 on: January 09, 2008, 10:23:28 PM »

Hi all

If you look carefully at the .jpg of afishing boat in a drying harbour a couple of posts back you can see a) the pivot point and b) a line from the lower end going up over the rail.  I assume this would be used to haul up the leg and would be made off  to a cleat inside the bulwark.

Cheers

Guy
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scrollsaw

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Re: I can't locate LHs crutch
« Reply #10 on: January 09, 2008, 10:59:00 PM »

Hi
           a crutch is for holding the boom to take the weight of the rigging and is in the form of a x
           and would fit across the deck against the bulwalks the top section would have a semi crcle hole in the top section of thex too suit the boom


     John
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Colin Bishop

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Re: I can't locate LHs crutch
« Reply #11 on: January 10, 2008, 12:00:58 AM »

Yes. but in this case it's a grounding leg as the drawing clearly shows.
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tigertiger

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Re: I can't locate LHs crutch
« Reply #12 on: January 10, 2008, 02:24:59 AM »

I assume then that they must be slung inboard die to the curvature of the hull.

What is the purpose of the rebate in the side of the crutch? In the figure it appears to be about a foot long about a foot from one end.
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Colin Bishop

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Re: I can't locate LHs crutch
« Reply #13 on: January 10, 2008, 09:27:56 AM »

It may be that in this particular case the crutch is mounted at right angles to the hull when in use and the rebate is there to fit round the gunwhale. Not enough info on the bit of the drawing posted to confirm this but if the length of the rebate is the same as the height of the gunwhale that is probably the answer. The crutches on the fishing boats in my pictures have "feet" to spread the load on softer surfaces. This helps prevent the crutches from digging in and allowing the boat to list when dried out.
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longshanks

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Re: I can't locate LHs crutch
« Reply #14 on: January 20, 2008, 10:12:24 PM »

Hi,
Is it possible the rebate is to sit over the 'wale timbers' (?) Thickening of the side timbers roughly in line with the deck.

Cheers
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Colin Bishop

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Re: I can't locate LHs crutch
« Reply #15 on: January 20, 2008, 10:35:07 PM »

Further to my previous reply I think you will find that the "cutout" is there not just to fit around the gunwhale but to take some of the load vertically instead of putting it all on the horizontal pin.
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