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

[Ron Rogers]

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.