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Bananabender said..

boty said..

All@Sea said..
All bow shapes can have their place... reverse bows (love or loath aesthetically) especially on multis are all about getting buoyancy down low -form follows function. Personally I prefer a plumb bow in most cases, and find the Bristol Cutter look more attractive than a J, but still love some meter boat designs as far as classics go - but there is a lot more than just the bow involved. Bow, sheer, cabin, transom, rig... get one wrong and the whole lot can be ruined. On a modern racing mono there's nothing to be gained from a raked bow, but on a cruiser they may be a little drier on deck, but more importantly the anchor chain will clear the hull easily without the need for an extended bow roller...

I only wanted to write a sentence or so, so I'd better stop here before I spend all day at the computer!

pretty much sums it up
wet decks are more a function of stern shape volume aft and fullness below waterline matching fore and aft than bow shape . I actualy prefer a wet boat as they normally have a smoother ride and pound less but I am weird

Here I was thinking the height of the freeboard had a lot to do with the dryness of the boat . When I had the Bounty I always felt the lower
set boat like the SS34 and Carter had an advantage as a result of less non contributing windage (drag ) in relation to sail area and made a mental note that next boat would have a cockpit lower to the water.
Then I caught up with the skipper of an SS after racing for four days all of which was a beat or tight reach in moderate to heavy seas .
We were pretty dry below and even though cold fairly dry in the cockpit.
He complained of being cold and wet all the way and everything below wet. We were never more than two hours apart.
However now I live in Paradise I also like a wet boat ,don't know about a smoother ride but it keeps me cool.

a dry boat sails on top of the water and therefore pounds to weather a wet boat sails in the water sticking its bows through waves giving a smoother ride hence I sail on a sailing submarine

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boty said..

Bananabender said..

boty said..

All@Sea said..
All bow shapes can have their place... reverse bows (love or loath aesthetically) especially on multis are all about getting buoyancy down low -form follows function. Personally I prefer a plumb bow in most cases, and find the Bristol Cutter look more attractive than a J, but still love some meter boat designs as far as classics go - but there is a lot more than just the bow involved. Bow, sheer, cabin, transom, rig... get one wrong and the whole lot can be ruined. On a modern racing mono there's nothing to be gained from a raked bow, but on a cruiser they may be a little drier on deck, but more importantly the anchor chain will clear the hull easily without the need for an extended bow roller...

I only wanted to write a sentence or so, so I'd better stop here before I spend all day at the computer!

pretty much sums it up
wet decks are more a function of stern shape volume aft and fullness below waterline matching fore and aft than bow shape . I actualy prefer a wet boat as they normally have a smoother ride and pound less but I am weird

Here I was thinking the height of the freeboard had a lot to do with the dryness of the boat . When I had the Bounty I always felt the lower
set boat like the SS34 and Carter had an advantage as a result of less non contributing windage (drag ) in relation to sail area and made a mental note that next boat would have a cockpit lower to the water.
Then I caught up with the skipper of an SS after racing for four days all of which was a beat or tight reach in moderate to heavy seas .
We were pretty dry below and even though cold fairly dry in the cockpit.
He complained of being cold and wet all the way and everything below wet. We were never more than two hours apart.
However now I live in Paradise I also like a wet boat ,don't know about a smoother ride but it keeps me cool.

a dry boat sails on top of the water and therefore pounds to weather a wet boat sails in the water sticking its bows through waves giving a smoother ride hence I sail on a sailing submarine

I like that explanation. Just had another look at the Pics of your
submarine , Classic.

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SandS said..

Chris 249 said..

SandS said..
the foiling idea is already creating a new class in racing . a dude in perth has been foiling a laser and has decimated the fleet because the boat is legal ........they had to create anther class for him once another foiler turned up to get the old boats back racing again

As others have said, it would never have been within a million miles of being legal in the first place. I'd be interested to hear more but the foiling Laser I sailed wouldn't normally have been remotely competitive from what I could feel. One of the things about foilers is that they really need a rig with low aerodynamic drag and a lot of righting moment, and the Laser has neither.

.

cant find the WA vid of the race where he tears through the fleet , your probably right about being not legal , but everything starts off as being not legal .... and if its on you tube isn't it true ?

as for laser not suitable for foiling there is plenty of footage of lasers foiling check out the link above

I've sailed a foiling Laser years ago, which is why I mentioned I could feel its performance. I didn't say they weren't suitable for foiling. They can do it, but to do well they really need a low drag rig and lots of stability. A foiling Laser may tear through the fleet downwind in the right conditions but I think it would be way too slow upwind to beat the fleet normally.

If Laser sailors wanted a fast boat, they wouldn't have got a Laser. Foilers are fun, but they are still a small minority of boats and they are growing very, very, very slowly compared to other trends.

Oh, and it's not "probably right" that the foiler is illegal - it is DEFINITELY right. At Laser titles they even roll your spars on a jig to make sure they are straight, they often make you tape the rudder bearing pin to ensure it's within half a degree of the right angle, they stamp all the gear - the rules are strict and simple and foilers are banned.

they may be not legal now in the current slow fleet . but when fully developed i.m sure they will be in their own class .......and much faster around the track some good close hauled sections here

Not in production yet - but prospective buyers are being asked for a $300 deposit with estimated cost when released - approximately $4500/4600. Hmmm, the cost of fun

edit: My bad - cost estimate is AUD$4200.

foilsz.com/

A lot of emphasis on French yachts way outside the norm in the above...........The French designers and builders JPK are doing yachts way inside the norm with a lot of success.......

www.jpk.fr/

This company is doing ply yachts of a decent size with a lot of sucsess............

www.rm-yachts.com/en/home

Dudley Dix designed the radiused chine boat a fair while back - he must wonder now why.......answer might be (from the transom going fwd) that the first curve off the keel could be his radius chine but the next one on the way out to the gunwale needs to be a chine. The topsides from that chine going straight up vertically to the gunwale. Make sure your gunwale line in plan view goes straight back aft from the maximum beam.............ensure a suitable keel rocker in elevation so as to sail upwind and downwind ok, and get the needed displacement.

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SandS said..
The hull shape of SV in the future may well become irrelevant.

Looking at the recent launch of the AC 75, side on the hull is looking airfoil like. Maybe that's the direction for foilers, designing for additional lift from the hull form once it's up in the air?

Otaru, Japan. Looks like a Farr one tonner just parked on a street corner. Rudder is way past full lock.

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Ramona said..
Otaru, Japan. Looks like a Farr one tonner just parked on a street corner. Rudder is way past full lock.

That cradle looks custom made for that yacht!...can't see any adjustment hinges of any sort.