Any engineers out there or technical sailors that would know the differences in transom types on sailboats. My boat has a more classical Herreshoffesque transom that comes from a continuous curve starting at the widest part of the beam or midpoint of the boat. It is aesthetically very beautiful however not very utilitarian. This small transom limits the amount of space in the cockpit yet may provide a greater ability to turn (come about) quicker with less side to side drag. I have in the past been a catamaran sailor, when it comes to mono-hulls, handling is like driving a Farrari as opposed to difficult and cumbersome turning of multi-hulls albeit extremely fast. I'm curious to know if this type of tapering of the hull provides any performance advantages. In addition, I imagine a boat with a wider transom/stern besides being roomier would also provide more stability. Any conogscenti welcomed.
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Try this site
(http://www.ssca.org/sscabb/index.php) they have some "Boat designers" on there that can tell you what they think. Warning...they aren't production boat fans.
(http://www.ssca.org/sscabb/index.php) they have some "Boat designers" on there that can tell you what they think. Warning...they aren't production boat fans.
Transom
Not just transom per se, but whetted surface behind the keel. Faster boats get skinny (small cockpit), and underwater hull rises and slims down to taper into a tiny transom. It's all about less drag. Stability is another matter, to complex for me to address with any certainty.Hope this helps, Jim
Not just transom per se, but whetted surface behind the keel. Faster boats get skinny (small cockpit), and underwater hull rises and slims down to taper into a tiny transom. It's all about less drag. Stability is another matter, to complex for me to address with any certainty.Hope this helps, Jim
Off Topic...
Chester, is your boat named "White Sale" ? That was my wife's first choice for the M25 we bought last summer and we argued about it for a year. -Bob White
Chester, is your boat named "White Sale" ? That was my wife's first choice for the M25 we bought last summer and we argued about it for a year. -Bob White
Important difference
Many folks use the word "transom" when they are talking about the stern of the boat. "There are four types of stern: transom, sharp (or lifeboat), counter, and canoe." This and a whole lot more about hull shapes can be found in Eric Hiscock's excellent book "Cruising Under Sail." Stern shapes affect hull speed, drag, helm pressure when the wind is up, stowage capacity, bouyancy in a following sea, and possible rudder choices (a book's worth in itself.) Hiscock is a cognosconti - I'm just a rail-meat(head).
Many folks use the word "transom" when they are talking about the stern of the boat. "There are four types of stern: transom, sharp (or lifeboat), counter, and canoe." This and a whole lot more about hull shapes can be found in Eric Hiscock's excellent book "Cruising Under Sail." Stern shapes affect hull speed, drag, helm pressure when the wind is up, stowage capacity, bouyancy in a following sea, and possible rudder choices (a book's worth in itself.) Hiscock is a cognosconti - I'm just a rail-meat(head).
Production Boats
I wonder how many of these anti-production boat nazis drive production cars. Production boats are a reality people need to get over. If I brought my car or truck to be serviced and was chided for not having an Aston Martin Lagonda and told that my problems could have been avoided by simply spending a quarter mil on every damn thing I own the world is gonna have one more lunatic on its hands. To hell with Eli Whitney, Henry Ford, and this whole damn interchangeable parts concept.
I wonder how many of these anti-production boat nazis drive production cars. Production boats are a reality people need to get over. If I brought my car or truck to be serviced and was chided for not having an Aston Martin Lagonda and told that my problems could have been avoided by simply spending a quarter mil on every damn thing I own the world is gonna have one more lunatic on its hands. To hell with Eli Whitney, Henry Ford, and this whole damn interchangeable parts concept.
Bad example, Kevin
The Aston-Martin Lagonda was/is one of the greatest maintenance headaches of all time, being notorious for spending more time in the shop than anywhere else. You make a good point, though - plus the fact that production boats make it possible for most of us sailors to do what we love, and contribute to discussions like this one.
The Aston-Martin Lagonda was/is one of the greatest maintenance headaches of all time, being notorious for spending more time in the shop than anywhere else. You make a good point, though - plus the fact that production boats make it possible for most of us sailors to do what we love, and contribute to discussions like this one.
Rating Rules
Hull design has probably been influenced by rating rules more than anything else. Production boats often lend some design to them too since people equate race boat shape with boat speed (not necessarily a good deduction). Take a look at CCA rule long ends, short waterlines, IOR pinched ends, shallow beamy aft ends in sport boats, etc. Current big, wide sterns happen to work well space-wise for production boats and don't diminish performance excessively. RD
Hull design has probably been influenced by rating rules more than anything else. Production boats often lend some design to them too since people equate race boat shape with boat speed (not necessarily a good deduction). Take a look at CCA rule long ends, short waterlines, IOR pinched ends, shallow beamy aft ends in sport boats, etc. Current big, wide sterns happen to work well space-wise for production boats and don't diminish performance excessively. RD
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