BST: T&T: Fuel economy and hull design:

[Bent T Priv.]

With the thousands of designs Sparkman & Stephens have created they
designate their new creation Queenship Passagemaker 60 "the slippiest vessel
ever"...
This is ia mirrored in fuel-efficiency and range...
You may look at her here http://www.ssqueenship.com/fleet.php?id=3
- or here http://www.vianaut.com/

Enjoy,
Bent Tolstrup
________________________________________________________

-----Original Message-----
From: Ron Rogers [mailto:rcrogers6 at kennett.net] 
Sent: Tuesday, June 17, 2008 9:45 PM
To: Arild Jensen; trawler-buy-sell-trade at lists.samurai.com
Subject: Re: BST: T&T: Fuel economy and hull design:

Several lines of trawlers have done exactly what Arild has suggested. I'm 
thinking of Selene and Nordhavn. Selene specifically references their 
"cruiser stern" as increasing speed or fuel-efficiency. Both firms make 
their swim platforms an extension of the hull lines. Done properly, the 
design counters the characteristics of a flat stern. I just thought of 
another firm - Diesel Duck.
Ron Rogers

----- Original Message ----- 
From: "Arild Jensen" <2elnav at netbistro.com>
|
| The broad flat transom is possibly the worst possible and least fuel
| efficient design you can pick. I recall reading about hull modifications 
such as adding a cockpit to a motor yacht. Apparently this also improved the

fuel milage somewhat. It was more than could be acounted for by longer WLL.
|
| It's obvious that future hull shapes must change to provide a better and
| more fuel efficient water flow. But a stern addition might be the answer 
for
| existing yachts.