Replacing a dinghy centreboard with steel

Some interesting thoughts, thank you. I'm not wild about Lasers, either. I had a Topper in the 'eighties, and I don't want another drip-dry board-boat with no stowage space and a cockpit like a baby's bathtub. I adore the sheerline and shape of the Finn, but I'm stones underweight, and it's said to be a thankless bitch to beat hard aboard.

The Contender is certainly a beauty, (I've watched Garda 2004, about twenty times) but I hear it's mostly only the tall, bulky helms who can really make use of stronger headwinds, when that hull is so rewarding downhill. And again, no stowage. I certainly do want to trapeze - I used to wire up bits of line to the Topper's lower mast, when I was only seven stone! A lifetime ago, it seems, and no, that didn't work.

And, apologies to progressivists: I really don't like the skiffs with their inelegant racks and impractically slender forms. If I cared so little for shape, I'd spend half my budget on a top-notch wetsuit, and buy a Dart 18. Or a windsurfer! Likewise, foiling Moths and International Canoes...very impressive, but I'm happy just observing; they're not real boats, for taking a trip in.

I want a boat that will easily cope with friends aboard when I choose to invite one or two, and a hefty picnic hamper, but not be unmanageable when I'm alone. I had a book called (I think) This is Sailing, 25 years ago, with a cover photo of a chap deftly singlehanding a Laser 2, trapezing under all three sails. I've been keen to stay clear of una-rig designs, ever since! I really want the flexibility that a three-sail set-up provides, even if the consequent demands are at least doubled.

Luckily I haven't an atom of interest in the kind of formal racing where overgrown schoolboys spend ninety minutes shouting rules and protesting pedantically as they cover the same unadventurous half-mile, ten times back and forth across a reservoir. I enjoy performance for the increased reward and cruising range it allows, even in a very modest vessel.

My 40kg keel idea is intended very particularly not to upset trim - the weight would be much slighter than any probable crewperson's mass, and well forward in the cockpit, and always central athwart-wise. As I'm not a hot-headedly ambitious type, I relish a decent reefing system even on what may technically be a fairly cut-throat racer, and I'd always sooner take in slabs of sail rather than risk having to swim.

But I'm not yet convinced that 100lbs of ballast, held fast thirty inches beneath the centreboard slot, is anything but an improvement to the soloist's ease and comfort in a larger two-man boat, especially when eventually, she's knocked flat. Is any boat with that weight of centreplate, likely to turn turtle? The ballast must delay the rollover.

I've a growing interest in the 470...could it be the loom of Weymouth? I've always overlooked the class, possibly quite without reason, as being conspicuously less thrilling than the 505, and so I heard, a lot less durable.

Out of curiosity, what have you got against the Flying Fifteen?
 
I have recently been down this path - well to some extent. I was looking for something I could trail home, went well and did not need a particularly good crew.

I was actually looking for a Wildfire - but they are pretty rare. I ended up with a Topper Breeze. A bit bigger than I intended, but with sitting out racks and a weighted centreboard which locks in place.

It is a little heavy to manhandle, although it can be left at a mooring - but with a large assymetric it goes like a rocket, with 3 onboard it will plane upwind and it does not demand much from the crew. The righting power from the racks makes quite a difference and if it wipes out the centreboard simple means it self recovers. However it does need waterproof bags for stowage as it is open transomed and can be quite wet.
 
Sounds interesting, I'll take a look. Also sounds new enough to cost as much as an old Flying Dutchman!! But thanks. No purchase before a full consideration of options.
 
I wouldn't recommend putting a steel board into a dinghy that is designed for a metal one, primarily because it will alter the loads imposed on the centreboard casing etc during sailing and during capsize.

The extra weight may make the boat stiffer (ie more stable), but in doing so that would load up the stresses on the rig, as the boat can no longer defend itself by leaning away in gusts so easily.

As well as a method to hold it down, should you capsize, you'll also need a block and tackle to pull the thing up when you finish sailing as it's going to be rather heavy...
 
Why not look at ti the other way round?

Why don't you try a sedate dinghy like a wayfarer into a more fun boat with a bigger rig?

Wayfarer with a 505 rig could be good fun. Big solid boats for cruising with the stick to give it a bit of go?

As it happens I scrapped the hull of a classic International 14 (single trapeze, symmetric spinnaker) a couple of years ago but kept the rig and sails. Put that lot on anything from 16 to 18 ft and it would be lively without being quite as hairy as the original. I wouldn't be asking a lot for it. PM me if you're interested.

As regards a metal centreboard, it adds a lot of weight but most of the extra is not where you need it for stability. I have sailed a couple of boats with tip-weighted boards and they do make a significant difference. I had a National 18 with the bottom foot of the 6 ft centreboard made of lead. It helped but needed a serious tackle to raise it. I currently have use of an Access dinghy that has a hollow GRP dagger board which has weight added in the bottom foot and the rest of the board free-flooding. Its weight is around 30 kg and it makes the little boat very hard to capsize.
 
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National 18

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So, rather than a 48" centreboard replicated in stainless steel plate, better off with 2/3rds of it in ply, and just the bottom end filled with lead? Or indeed uranium, if it becomes available... :D

Very good clear thinking. I'll keep it in mind, thanks.

Why is so little written about National 18s? Beautiful, quick, versatile useful boats...seemingly never for sale, and invariably snapped up in minutes when they are.

The Osprey and the 'big' Javelin (as opposed to the 14-footer) are each a foot longer than the 505, and that's bigger than most dinghies. But, mere mortals control Flying Dutchmans (20') and Norfolk Punts (22'). I wonder why Nat18s aren't everywhere? I'd choose one, if there were one available...
 
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Just a word of caution on H&S front.
I once had an 18ft boat with a heavy metal plate. This was raised with a block and tackle to the foot of the mast. Usual method was to sit astride the cb case to pull the rope. One day the rope broke and the plate descended very fast, stopping with a thud 1inch from my naughty bits! To think that we sometimes peed down the slot.:eek:
 
DanT, my horror is mingled with mystification! If you were raising the plate...which part of it risked obeying gravity and squishing your essentials? Were you somehow beneath the hull?

Actually, in the interests of taste, I believe I'll forget the question, and instead use my underlying concern as a good reason to stay stolidly sober in future. No adverse implication about your own adventures, but a memento-mori as regards my own, thank you.

I anyway take on board the general theme here...that whether raised, lowered, or anywhere between, a weighted centreplate must either be 'lockable', or lethal.
 
DanT, my horror is mingled with mystification! If you were raising the plate...which part of it risked obeying gravity and squishing your essentials? Were you somehow beneath the hull?

Actually, in the interests of taste, I believe I'll forget the question, and instead use my underlying concern as a good reason to stay stolidly sober in future. No adverse implication about your own adventures, but a memento-mori as regards my own, thank you.

I anyway take on board the general theme here...that whether raised, lowered, or anywhere between, a weighted centreplate must either be 'lockable', or lethal.

It's the sticky up lever bit that flies back with considerable force, look at Lakesailers photo. The Tee bar handle was where the tackle went. I'd like to stop remembering this now.
 
how big are you

I could sail my osprey single handed on a light day with an extra long tiller extension

The are quite beamy and more stable as a result. much more so than a Dutchman or 505

You could just reef it

When it capsizes it floods so doesn't invert

if you buy a design of this style inversion is less of an issue

Stratos is the answer if you want to do it properly
 
Out of curiosity, what have you got against the Flying Fifteen?

Flying Fifteen: it's neither a dinghy nor a yacht. You have to hike to get the thing going properly (Why would anyone want a hiking boat when you can have a trapeze?) and yet it's most unrewarding because your weight is masked by the lump of iron underneath.

The Osprey suggestion sounds well worth investigating. Fast, room for a party inside, yet not extreme. I've no direct experience of one, but I've heard very favourable reports.
 
Thanks for that. I've heard the same.

I always wanted to love the Flying Fifteen, but she's a tad slender for a boat only 20' overall. Plenty of oldies out there, wonderfully, excitingly inexpensive...and I'm practically turned-on by her not having a centreboard case to obstruct the cockpit. But...what a pain in the fundament it must be, not to be able to rest a half-tonne yacht upright on its keel, nor to be free to retract it!

I would honestly even countenance making a lift-keel version of the F15, with about 60" draft, keel down, and just a pair of shallow bilge plates when the board's up. I can't help thinking from the prices of the oldies, that there's a large population of owners who are obliged by Uffa Fox's design, to dry-sail their old F15, at enormous expense each season. If a clever fellow with an angle-grinder and a hefty tub of epoxy, offered to convert 500 or 600 pain-in the-backside weird-bottomed keelboats into versatile shoal-drafters...I'd call that guy a likely Dragons' Den prospect.
 
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