Hardy being lifted out at hamble Point

Firefly625 said:
so you do not just rely on the little stickers on the hull saying "slings here" :D
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You deliberately do NOT use the sling stickers Firefly. Those stickers simply denote "safe" areas where you wont damage a shaft or seacock strainer, but they assume a standard travelhoist will lift the boat so no allowance is made for COG. COG is not too relevant when you are using a travelhoist and it is perfectly ok if the boat's weight is not shared 50-50 by the two hoist slings

When you are lifting on a single cable, as in my video, you have to get the cable above the boat's COG when the keel is level, and you have to work with whatever fore-aft dimension of the lift spreader bars that you get on the day. The lift spreaders they supplied for my boat were long relative to my boat's length, and that meant my aft sling was substantially aft of the aft "sticker" position. It took 3 or 4 goes with the crane lifting the boat a metre or two, and then aborting, to get this right. The diver had to check nothing under the boat was being damaged as we moved the slings around. You can see in the vid that the aft sling is very close to the shaft, and if the fore-aft spreader bars had been any longer we would have had to abort the whole lift while they got some new gear.
 
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halcyon said:
A more geeky reply.

The lift out was due to a chap called Sir Alfred Owen, MD of Rubery Owen who built Hamble Point marina. One of our products back in the 1960/70's was a Carricon, it moved and stacked frieght cantainers. On a visit Alfred noted a boat was similar to a container, so had a carricon modified with slings, and structural devision build two runways out into the water at Hamble Point. The carricon moves onto runways, boat is moved in between runways into slings, lift boat, carry to dry land. There you have the start of it all.

The hoist in the film is still the basic design of the original Rubery Owen Carricon. The problem at the time was no one else to see a market for the idea. mind you they said the same about his marina.

Brian
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Thanks for that geekiness Halcyon. I didn't know any of that history
 
harstonwood said:
Interesting stuff, do they extend beyond the outer beam edge? I know there was a Grand Banks that damaged a stabilizer on a pile mooring in Pwllheli. I was suprised that it would be that adjacent.
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They're well tucked in when centred - see 0.05 in my second vid above. You could hit something when docking if the boat rolled, but it would have to be a very big roll. The GB sounds pretty unlucky unless it was a strange installation. When operating they can swing out past the chine though.
 
z1ppy said:
nice vids but i cant watch my boat being lifted! it just doesnt feel right!!
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I am with you there, having been trained to plan crane lifts in the construction industry, I notice some horrible potentials in the boatyards I have visited over the years, not so much with the travel lifts but especially with the old latice jib cranes often mounted on rubber tyres that you often come across.
I deliberately kept away from mine when they lifted her!
 
jfm said:
You deliberately do NOT use the sling stickers Firefly. Those stickers simply denote "safe" areas where you wont damage a shaft or seacock strainer, but they assume a standard travelhoist will lift the boat so no allowance is made for COG. COG is not too relevant when you are using a travelhoist and it is perfectly ok if the boat's weight is not shared 50-50 by the two hoist slings

When you are lifting on a single cable, as in my video, you have to get the cable above the boat's COG when the keel is level, and you have to work with whatever fore-aft dimension of the lift spreader bars that you get on the day. The lift spreaders they supplied for my boat were long relative to my boat's length, and that meant my aft sling was substantially aft of the aft "sticker" position. It took 3 or 4 goes with the crane lifting the boat a metre or two, and then aborting, to get this right. The diver had to check nothing under the boat was being damaged as we moved the slings around. You can see in the vid that the aft sling is very close to the shaft, and if the fore-aft spreader bars had been any longer we would have had to abort the whole lift while they got some new gear.
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jfm, the idea of 3 or 4 attempts to lift your lovely boat would have had me questioning why I wasn't sailing her down to the Med myself... I guess experience of such lifts breads confidence in the crane operators probably capabilities...?
 
halcyon said:
A more geeky reply.

The lift out was due to a chap called Sir Alfred Owen, MD of Rubery Owen who built Hamble Point marina. One of our products back in the 1960/70's was a Carricon, it moved and stacked frieght cantainers. On a visit Alfred noted a boat was similar to a container, so had a carricon modified with slings, and structural devision build two runways out into the water at Hamble Point. The carricon moves onto runways, boat is moved in between runways into slings, lift boat, carry to dry land. There you have the start of it all.

The hoist in the film is still the basic design of the original Rubery Owen Carricon. The problem at the time was no one else to see a market for the idea. mind you they said the same about his marina.

Brian
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well I never knew that.. thanks Brian for that history lesson :)
 
Well Got the old tub hoisted out today, and moved to Llyn marine's yard for winter pampering!

As promised a few vid's. (for the hoist out geeks)..........apologies for the quality, taken on blackberry, and started a bit late due finger trouble!

First video...........last part of lift..........and a bit of Hafan Pwllheli

http://www.youtube.com/watch?v=X_037NWx_Wk

Second video en-route to yard...........bit of a "newton cradle" moment half way through

http://www.youtube.com/watch?v=eBxZiCDOCAU


Third video (rubbish quality, as into sun at 9 am)............passing through Firmhelms yard enroute, a shot og the infamous "Meekathara" HLB's Princess


http:
//www.youtube.com/watch?v=2MC-VkRtpnQ


will try and improve for hoist back in !!

Much better day in North Wales than yesterdays F7 !

Cheers
 
z1ppy said:
Mercury yard services are done by HYS rather than mdl so running down the river for work saves plenty pounds!!!!!
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spot on Howard... 50% off boat yard services with MDL yard at HP, but alas Mercury run by HYS

Steve, I know you have got your launch & recovery down to a fine art... very impressive!! & thanks, indeed family all well, looking forward to catching up in the spring... :-)
 
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Heres a couple of mine, first one is of my first boat (Karnic 2050) and the second is the arrival of my new (to me) boat to Saxon Wharf a month ago. Every time I see the guys do this my heart is in my mouth, I know it will hold but you just never know!





 
Well, it's nothing special really, but just to throw in my 2c:


Oh, and this is a video I already posted in the past, but also here there are some crane bits which fit the thread nicely, at the beginning and at the end:
 
Love the different clothing attire of the operatives in the two previous clips (matt13 & Mapism) really made me laugh! I know it's down to weather and elf n safety differences, made me laugh anyway, know where I would rather be. Both interesting vids by the way, thanks.
 
Haven't posted in a while thought I'd add my bit .....

watch



Just in case the above doesn't work......
http://www.youtube.com/watch?v=GeVzP_CFRJM
 
Some more photos from today.

Still floating in the January sunshine.

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Uh-oh. Crane with big scary wheels approaching.

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Please please please don't drop her.

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Hmmm. Isn't there supposed to be something underneath, or is this the magnetic levitation cradle?

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This should keep me busy for a while.

IMG_1768.JPG
 
Things which should be part of a boat lift are all present and correct in these photos :)

- Rectangular frame means that the boat is not "pinched".
- Lifting straps are in the right place for balance.
- Lifting straps secured by horizontal straps tied to the cleats to prevent them slipping.
 
FlowerPower said:
Things which should be part of a boat lift are all present and correct in these photos :)

- Rectangular frame means that the boat is not "pinched".
- Lifting straps are in the right place for balance.
- Lifting straps secured by horizontal straps tied to the cleats to prevent them slipping.
Click to expand...

Steady before you issue them 10/10. The aft strop in your penultimate picture is 180deg twisted
 
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