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crash

Member Since 08 Mar 2006
Offline Last Active Sep 19 2014 08:11 PM
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Posts I've Made

In Topic: Canoe Sterns

16 September 2014 - 12:23 AM

Many transom sterned displacement cruising boats drag their transom through the water when fully loaded for cruising and that is just slow. I'd rather have a well designed canoe stern which eases that problem.

 

Jose,

You may have something there.  That's a much more nuanced perspective than the "part the seas and rise with a following sea" argument you usually get.  As for overloaded sterns, I'd guess you'd have to do some tank tests, etc, to determine if dragging the transom is slower than immersing a bunch of stern.  I'd guess (you & Bob are far more expert here than me, I'm just a pretend engineer who flew jets) that in either case, you'd have to immerse enough volume to counter the excess load on the stern.  How much more or less stern ends up immersed, vs how much wetted surface area vs. induced drag (if induced is the right word for a dragging transom) would be interesting to figure out....

Crash


In Topic: Perry Sliver Class Day Sailor

13 September 2014 - 05:12 AM

I'm available for adoption....just sayin" :rolleyes:


In Topic: Canoe Sterns

13 September 2014 - 05:07 AM

Canoe sterns were all the rage when boats were slower and ocean passages were becoming popular again around mid 1970. The theory is in that a canoe stern will rise better when hit with a following wave. As fin keels and faster hulls have been introduced the chances of danger is still there but most out run the danger. I have never been a fan and certainly do not believe trading something I need all the time, like cockpit space and storage, for some perceived sometime advantage. I am sureBob Perry, in whom I have a great deal of respect will tell you differently. My forty year old ocean cruiser, with a traditional stern, does just fine. Thankyou

Canoe sterns are art to some of us.

We have them because we like the way they look.

And some of them perform very well.

In fact one in particular I know of well performs brilliantly.

Not to mention it's just freaking beautiful....

 

I suspect if the guy designing the boat knows what he is doing he can make any stern design (style?) fast and perform brilliantly...DG, Bob Perry seems to have done the range of stern designs. Given the constraints of the various clients, most of them have been pretty damn good performers...

 

Night Runner

Icon

Francis Lee

the FT10 & 7.5

etc, I could write a pretty long list, but it'd get boring....

 

Same for German Frers, Olin Stephens, Jim Taylor, Carl Schumacher, etc, etc...


In Topic: Time for a bigger boat, what to get?

12 September 2014 - 11:45 PM

Cape Cutter 19 and larger Cape Henry 21 can be homebuilt if your into that...


In Topic: What's the most breeze you can actually sail into?

12 September 2014 - 11:37 PM

Once I've seen 65+ sustained.  On a Navy 44' Luders Yawl.  Storm Trysail, Storm Jib.  Wind speed instrument went to 65 knots and arrow (it was analog) was sitting on the peg. 20-25 ft seas.  Tacked away from Ocean City Maryland around 5 in the evening.  Tacked back over around 11 pm. Around 4am with wind lightening, we once again saw the lights of Ocean City....

 

Luders 44's were not the most weatherly of all boats, but were pretty good (but very wet) sea boats.  If at 65+kts and 20+ foot seas we could make no distance to weather over 11 hours, its hard to believe anyone making any distance to weather at 100 kts...