Comments on: FPB 64 Update #10 Part Two http://setsail.com/fpb-64-update-10-part-two/ Making it happen Sat, 31 Jul 2010 05:02:12 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: Steve Dashew http://setsail.com/fpb-64-update-10-part-two/comment-page-1/#comment-277 Steve Dashew Wed, 03 Jun 2009 13:23:36 +0000 http://setsail.com/?p=5521#comment-277 Good question Frank: The answer to this is not easy. Canoe sterns have some advantages at slower speeds, and in certain sea states. But they also have some disadvantages in terms of internal volume, deck space, dinghy storage, and water flow at higher speeds. The heavier and slower the boat, the better off they are compared to transom sterns. Heavier boats also have deeper props, so these won't suffer cavitation in big seas as badly as would be the case with a lighter configuration done with a canoe stern. Note that with a sailboat canoe sterns rarely make sense because of the hit on upright stability. We have been observing the Norwegian double enders, power and sail, and will write up some more on this subject with photos in the next few weeks. Good question Frank:
The answer to this is not easy. Canoe sterns have some advantages at slower speeds, and in certain sea states. But they also have some disadvantages in terms of internal volume, deck space, dinghy storage, and water flow at higher speeds. The heavier and slower the boat, the better off they are compared to transom sterns. Heavier boats also have deeper props, so these won’t suffer cavitation in big seas as badly as would be the case with a lighter configuration done with a canoe stern.
Note that with a sailboat canoe sterns rarely make sense because of the hit on upright stability.
We have been observing the Norwegian double enders, power and sail, and will write up some more on this subject with photos in the next few weeks.

]]> By: Frank Goelo http://setsail.com/fpb-64-update-10-part-two/comment-page-1/#comment-270 Frank Goelo Tue, 02 Jun 2009 06:03:03 +0000 http://setsail.com/?p=5521#comment-270 Thank you for this very informative Website. Having decided that a narrow stern and balanced fore and aft ends were the way to go to minimize drag from the wake, among other advantages, why not go all the way and design a pointed canoe stern, which would provide even less drag/wake and work well with the single engine power solution?... The advantage of the stern boarding platform could be preserved, as a small cockpit with one or two swing out doors to fully enclose it could be easily designed, making boarding of unwanted guests a lot more challenging... Thank you for this very informative Website.

Having decided that a narrow stern and balanced fore and aft ends were the way to go to minimize drag from the wake, among other advantages, why not go all the way and design a pointed canoe stern, which would provide even less drag/wake and work well with the single engine power solution?…

The advantage of the stern boarding platform could be preserved, as a small cockpit with one or two swing out doors to fully enclose it could be easily designed, making boarding of unwanted guests a lot more challenging…

]]> By: Steve Dashew http://setsail.com/fpb-64-update-10-part-two/comment-page-1/#comment-250 Steve Dashew Fri, 29 May 2009 15:36:11 +0000 http://setsail.com/?p=5521#comment-250 Roger: Lightning is always in the back of our minds. We have a degree of protection from the metal hull acting as a Faraday cage. On Wind Horse, when in lightning risk areas, we disconnect the lazy pilot cables. We also have the ability to steer with the engines if the rudders are centered. And of course, there is an emergency tiller and relieving tackles. The FPB 64 has a hydraulic manual helm pump, in addition to the two pilot systems and emergency tiller (with single engine we felt this was a requirement). Roger:
Lightning is always in the back of our minds. We have a degree of protection from the metal hull acting as a Faraday cage. On Wind Horse, when in lightning risk areas, we disconnect the lazy pilot cables. We also have the ability to steer with the engines if the rudders are centered. And of course, there is an emergency tiller and relieving tackles.

The FPB 64 has a hydraulic manual helm pump, in addition to the two pilot systems and emergency tiller (with single engine we felt this was a requirement).

]]> By: Roger Arrowood http://setsail.com/fpb-64-update-10-part-two/comment-page-1/#comment-247 Roger Arrowood Thu, 28 May 2009 13:19:19 +0000 http://setsail.com/?p=5521#comment-247 I've been enjoying the FPB updates. I've a question concerning your not using a traditional steering wheel. Having owned a vessel that had it's autopilot computer, among other things, crisped by an "near" lightning strike, what do you think the lightning issues are with regard to your steering approach? Thanks! Sincerely, Roger A. Arrowood I’ve been enjoying the FPB updates. I’ve a question concerning your not using a traditional steering wheel. Having owned a vessel that had it’s autopilot computer, among other things, crisped by an “near” lightning strike, what do you think the lightning issues are with regard to your steering approach?
Thanks!
Sincerely,
Roger A. Arrowood

]]>