Flybridge davit

[Robg71]

I am looking at small flybridge davits.
I see opacmare make some small ones, but not with any lightweight version.
Anyone know another manufacturer of flybridge davit weighing less than 500kg
To lift about 250kg to 300 (walker bay genesis rib or similar)
Cheers
Rob

 

[jfm]

I am looking at small flybridge davits.
I see opacmare make some small ones, but not with any lightweight version.
Anyone know another manufacturer of flybridge davit weighing less than 500kg
To lift about 250kg to 300 (walker bay genesis rib or similar)
Cheers
Rob

The lightest would be the carbon one made by Jeremy Rogers in Lymington http://www.atlascarbonproducts.com/. This weighs a mere 30kg or so!

But is weight really an issue on this project? Surely the convenience of a fully functioning hydraulic davit crane would be nicer? In which case your 2 choices are basically Opacmare and Besenzoni. I have had 2 Besenzonis and been very pleased with them, but I think it is much of a muchness as between Besenzoni and Opacmare in this application

I think your 500kg is wide of the mark though. A Besenzoni G319, (which is the base unit that mine is an adaptation of) with telescopic jib full monty, and 300kg lift capacity, weighs 285kg. If you made a mounting post in welded-on steel a Besenzoni 406 could be used, lifts 250kg and weighs 205kg

 

[Robg71]

Thanks very much, that looks ideal.
The weights i quoted were straight from the opacmare website, for what the classed as small boat suited, and only got heavier from there. Hence my shock at sitting another 500kg up there.
200kg is much more bearable, as we are looking to keep it light, as far as reasonably practicable.
Carbon would be an unnecessary extravagance, next to the list of titanium fasteners, nuts and bolts

 

[jfm]

Thanks very much, that looks ideal.
The weights i quoted were straight from the opacmare website, for what the classed as small boat suited, and only got heavier from there. Hence my shock at sitting another 500kg up there.
200kg is much more bearable, as we are looking to keep it light, as far as reasonably practicable.
Carbon would be an unnecessary extravagance, next to the list of titanium fasteners, nuts and bolts

Tenders on flybridges are a bit Marmite. I hate them; Hurricane loves them, for example. Thing is, to like them you need a superdooper crane that is a joy to use, so that launching/recovering the tender is minimum PITA. That leads you to buying these Opacmare/Besenzoni cranes, and they are I think £ five figures (beginning with a 1). That's the sort of money that would pay for an up-down platform to put the tender on, in case you might prefer that. Though, you might not. Decisions decisions!

I would have the up/down platform every time, as it is so much easier to launch and recover the tender, but it's completely personal choice

 

[JerseyDiver]

Have a look at steelhead marine.net 400kg lift from a 100kg unit

not sure on pricing but quite a few nordhavns have these and their owners continuously praise them !!!

 

[Robg71]

Part of my research, looking at four options, flybridge crane, swim platform, normal davits, or blow up before and after use...
Swim platform is my personal favoured choice, but looking at the options.
Flybridge would have edges of boat just hanging over either side and would probably look odd, so restricting size of boat etc. i think it looks great on bigger boats, but 50 footer is possibly a bit small to cary it off well. My line drawing with a dinghy not looking good.
Swim platform would have a lot more use for me..

Thanks Karl, will have a look.

 

[JerseyDiver]

I just found a perfect solution for you, Crane built into coaming of rear seat in cockpit, I will link the picture I found on uk distributor site. tender then sat on DIVE platform ????

can't link it so look at mdsmarine.co.uk. Click on cranes and go to bottom right picture of crane built into structure. looks very neat.

 

[Robg71]

It does look neat. But would only need crane if was putting it on flybridge, so crane no good in cockpit
Ill dig my pencils and scaled rule out, see if i can scan my drawing to show you fitment.

 

[BartW]

Tenders on flybridges are a bit Marmite. I hate them; Hurricane loves them, for example. Thing is, to like them you need a superdooper crane that is a joy to use, so that launching/recovering the tender is minimum PITA. That leads you to buying these Opacmare/Besenzoni cranes, and they are I think £ five figures (beginning with a 1). That's the sort of money that would pay for an up-down platform to put the tender on, in case you might prefer that. Though, you might not. Decisions decisions!

I have both options, and wouldn't want to trade in one nor the other,
we use both positions frequently,

tender on the FB, most of the time,
almost alway's in marina's;
much more convenient for handling ropes,
and platform available for handling / placing stuff
or even jump on / off the boat / quay
bringing stuff onboard via the platform
preparing dive gear,
etc...

For diving, we mostly don't ancher, while divers are dropped and recovered on the dive spot,(using the hi-lo platform)
tender is conveniently stored on top

but sometimes when moving between 2 anchorages,
or at night on a anchorage
we put her on the platform.
much quicker

 

[Robg71]

Also, Bart, BA is a big boat, big enough to carry a reasonable, useful size rib on the f/b. which is possibly larger than i can get away with. The extra beam makes all the difference i think.
I think by going with boat on flybridge, compromises too much... Size of rib, space used, weight up top,
Realistically i would like something in the 15/25 hp category. Quick enough to be entertaining, big enough to be useful and sturdy, and small enough to fit in to its surroundings....
Could you send me a jpg of yours in location on fb
Cheers
Lots of choices

 

[Bandit]

Rob

an alternative would be snap davits and stow rib on its side on the transom but take off the outboard with a small arm and winch or crane. a 15 to 25hp is a bit big to handle.

Do you not have a swim platform to stow it on ?

 

[MapisM]

Rob, for cranes and passerelles, you might wish to inquiry also Bitecnomare (www.bitecnomare.it).
It's a company whose products are all handcrafted (hence customisable in each and every possible way), which can be convenient for a project like yours.
And they deal also directly with private customers, which means that for just about the prices of streamline production stuff (Opac/Besenzoni) you can actually get something custom built, and of substantially better quality.
Otoh, it's a small company, which works mostly for pretty big, custom superyachts built by IT shipyards.
Therefore, they are really bad at marketing (as their awful website shows), and they might be not so responsive to private inquiries...
But (as opposed to CMC), I'm pretty sure that they also build stuff suitable for a 50 footer.

 

[Tender_aft]

Tenders on flybridges are a bit Marmite. I hate them; Hurricane loves them, for example. Thing is, to like them you need a superdooper crane that is a joy to use, so that launching/recovering the tender is minimum PITA. That leads you to buying these Opacmare/Besenzoni cranes, and they are I think £ five figures (beginning with a 1). That's the sort of money that would pay for an up-down platform to put the tender on, in case you might prefer that. Though, you might not. Decisions decisions!

I would have the up/down platform every time, as it is so much easier to launch and recover the tender, but it's completely personal choice

I would have thought an FB crane means your tender is more secure all the way up there (for unattended boats)?

 

[Robg71]

Rob, for cranes and passerelles, you might wish to inquiry also Bitecnomare (www.bitecnomare.it).
.

Thanks, i will have a look.

I have a bit of time on my hands now, as just pulled my back out, and its agony. So no work for me, can research though.
My scale drawings have shown me that the flybridge rib and davit is a no go. It takes up too much space. So looks like a 1metre swim platform going instead. Looks neat as well.
Most of the raise/lower systems look to be fairly substantial, i imagine this is to make up for the mainly plastic boats they get fixed to, to spread the weight and stresses around more. Anyway, i shall look into more platform lifters..
Thanks all.