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size of boat on davits
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I've got my eye on a little wooden boat to go on the davits, but wasn't sure about size.... forget the weight argument, i've got that covered, but what size boat do you carry in your davits compared to LOA and beam?
In my case, for completeness, the tender i've got in mind is 2.6m and the boat is 12m, beam 4m... is 2.6m a little large?
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Re: size of boat on davits
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Quote:
I've got my eye on a little wooden boat to go on the davits, but wasn't sure about size.... forget the weight argument, i've got that covered, but what size boat do you carry in your davits compared to LOA and beam?
In my case, for completeness, the tender i've got in mind is 2.6m and the boat is 12m, beam 4m... is 2.6m a little large?
Sorry if I am missing the point here, but doesn't it really depend on what you are going to use said boat for? Yes I realise it will be a tender, but what will you want it to do?......wouldn't an inflatable make more sense?
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Robih
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(regular)
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16/05/2008 17:56
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Re: size of boat on davits
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if it helps to see an image
- this is a 2.8m dinghy on a 12m LOA (4m beam) boat. I think it's a little big for the boat but it's not sufficient of an irritant to warrant changing the dinghy (or the boat!)
(Click the thumbnail to enlarge)
rob
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pandos
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(regular)
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16/05/2008 18:01
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Re: size of boat on davits
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excuse my ignorance,
what model boat is that?
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Robih
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(regular)
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16/05/2008 18:03
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Re: size of boat on davits
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Nauticat 39 - you're not alone, few people recognise her as a Nauticat!
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Re: size of boat on davits
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Quote:
Sorry if I am missing the point here, but doesn't it really depend on what you are going to use said boat for? Yes I realise it will be a tender, but what will you want it to do?......wouldn't an inflatable make more sense?
i've got a small inflatable on the davits right now... I want a little wooden boat for a] sailing b] easier to row c] they look nicer!
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Re: size of boat on davits
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Ah right, I wouldn't argue with any of that, but I would reckon that an 8 foot dinghy is about the minimum for an adult to sail comfortably, still I suppose it depends on the size of the adult?
If you aren't a big lumbering oaf like me, you might get away with a 7' pram? I think there is a kit for a 7 foot ply clinker stem dinghy, but it's a bit wee!
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Re: size of boat on davits
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I've got a 2.6m Bombard inflatable on davits on our 29ft 10ft9ins beam Konsort Duo. It is just over the width of the transom. Looks OK.
Go for it.
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Re: size of boat on davits
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yep... that about sums up my concerns.... I want it big enough to be useable, both for sailing, and as a family tender, but not too big to be awkward in the davits... and was after a bit of advice on other peoples dimensions....
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Re: size of boat on davits
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Well I don't know if it will be much help, but a friend of mine has a MG Golden Hind, 30 footish, with a 7' pram in her davits, looks ok to my eyes....so I guess a bigger boat would look ok with an 8 footer?
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Re: size of boat on davits
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we hang a 2.7m rib and 10hp o/b on the back of Beleza, I thought at first it was way too big but once it was up it seemed to shrink. our beam is 3.6m. It is heavy though and extra straps are needed to secure it on passage even with o/b off
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Re: size of boat on davits
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It would be worth mimicking the weight of the dingy to ensure it doesent lower the exaust below the water line as it could cause back presure and cause lots of black soot on the transom.
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Re: size of boat on davits
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Shouldn't be a problem.... exhaust is currently a good 10" or 12" above the waterline....
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NickC
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(new user)
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16/05/2008 22:11
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Re: size of boat on davits
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Have you thought about a Walker 8? Hardshwll dinghy but with its RID it will easily support 3 adults and can take full sailing rig. We have one, wonderfully stable and looks better than a standard RIB.
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Re: size of boat on davits
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Yup, but they must have put an extra zero on the price tag by accident.... As much as I like them, the price for a rotomoulded boat is incredible!
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Re: size of boat on davits
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Quote:
if it helps to see an image
- this is a 2.8m dinghy on a 12m LOA (4m beam) boat. I think it's a little big for the boat but it's not sufficient of an irritant to warrant changing the dinghy (or the boat!)
(Click the thumbnail to enlarge)
rob
Nice picture of you both Robert! I didn't realise you'd put davits on your boat as well.
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Re: size of boat on davits
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It doesn't really matter what the beam of the boat is. The width of the transom is more relevant: if it sticks out too far you can have problems. A Janbenbav can carry a much bigger tender than a Contessa for example.
Of course if you aren't stuck with a half-boat you have more scope. My 11 ft tender fits comfortably between the hulls 
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Re: size of boat on davits
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Was this "Swing Easy" by any chance?
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Robih
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(regular)
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17/05/2008 13:12
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Re: size of boat on davits
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No - she was once "Obsession M". I recall the name "Swing Easy" but I can't remember from where - remind me?
rob
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Re: size of boat on davits
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If you come round to Chi Harbour you can try our WB 10 for size ...
probably your best way is to borrow a couple of tenders and see how they look ...
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Robih
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(regular)
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17/05/2008 14:58
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Re: size of boat on davits
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John,
Thanks! The davits were there when you were on board - maybe you were so scared that you didn't notice! We're still looking forward to laying alongside Serendipity some where soon!
Rob
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Talbot
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(regular)
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17/05/2008 18:16
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Re: size of boat on davits
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IMHO it is not the width of the beam, but the width of the transom that is the critical dimension. I would be seriously concerned in bad weather if the bow/stern of the tender is sticking out significantly and I was beating to windward. The other critical dimensions are buoancy in the stern and height above waterline - significant when running before the wind in high seas.
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Re: size of boat on davits
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Thanks for that Talbot... the height in particular is a good point I feel.... my davits are high enough, that if I can crank the tender up as high as possible, the keel of the tender will be 3' off the water, so I think i've some room for maneouvre.... I guess if we were on a very long passage, we may well stow the tender on the foredeck anyway rather than do extended passage making with it hung off the stern...
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Talbot
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(regular)
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17/05/2008 20:38
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Re: size of boat on davits
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3 ft sounds good, but is so dependent on the bouyancy that it is impossible to give a straight yes/no answer. The only way is to suck and see with the weight applied in the right place. You also have to consider what would be the result if the tender had got a lot of extra water into it. (i.e. forgotten to take the bungs out - or just poor design. My major criticism of the Zodiac fast rider was an inability to get water out of the bottom of the boat, and its 10-15 gallons of water that could accumulate there in a heavy downpour
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Re: size of boat on davits
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I've bought a little 8' pram that is nearly completed off eBay for £83!
A few hours work should see her on the water, and then a few more hours should see her sailing (all the sailing bits for a Gaff rig are included)
At 8' its a bit smaller than I originally planned, but I figured that 8' is big enough... and at £83 it was a bit of a bargain.... much less than the cost of the materials, and most of the hard work done! 
Thanks for all your advice everyone...
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Re: size of boat on davits
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Looks good to me Morg!.......
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Re: size of boat on davits
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You saw ours in Scotland a couple of weeks ago - 2.6 rib on a 30' boat. Horrified? - too late - yours is paid for! Only concern is only 3' between it and the water - under way the mothership will squat, and with a big sea you might get a little "extra lift"... We've had it happen on Sahona.
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