[PUP] Passagemaker attributes - pilothouse location

[Truelove39 at aol.com]

Ken, thanks for sharing this info. Your description makes it easy to  
visualize the difference between the two boats. Heavier being better!
 
Even in our 35 ton boat, when we have a full load of fuel and water  (5-1/2 
and 2-1/2 tons respectively) it does make a difference that can be felt. 
 
Your upcoming passage sounds like a real adventure - we'll look forward to  
hearing about it.
 
John
"Seahorse"
 
 
 
In a message dated 1/23/2009 9:39:13 A.M. Eastern Standard Time,  
kenw at talkspot.com writes:

John  (Seahorse) said: "... Question - how does your 68 compare to the 62 in
a  head  sea?..."

It's impossible to really compare the two boats  accurately. We sold our 62
nearly five years ago, and I have such fond  memories of it, that it is
difficult to be objective. But, I'll do my  best...

The N68 is amazing going into head seas. I've never seen a boat  take head
seas as well, and I have a few theories as to why: 

- The  "center of pitch" on the N68 is closer to the middle. This helps keep
the  bow down. Because the 62 has it's fulcrum point further aft, the long
bow  has to move up and down more (imagine a teeter-totter, with an off
center  fulcrum).

- The 62 has a bulbous bow, and the 68 does not. The bulbous  bow on the 62
is an older technology than what is being used today, and has  a tendency to
slap the water on re-entry. 

- Weight is certainly a  factor in the difference in the ride. The 62 weighs
sixty tons, whereas the  68 weighs over 100 tons. 

- The twin engines in my 68 may be a factor.  I've never had the boat slow
down when punching into head seas, unless I  slowed it down, or a current
did. I have plenty of power available, and the  twin props take a big bite at
the sea.

Despite my saying that it is  impossible to directly compare the boats, we're
about to do it! Two 62s  (Grey Pearl and Seabird) as well as my 68 (Sans
Souci) will be running the  Bering Sea, backwards, this July. We'll be
battling a head sea, and head  wind, side by side for a couple thousand
miles. Overall we'll be running  together for over five thousand miles. My
guess is that by the time we  arrive in Japan we'll have some good
quantitative information about how the  boats compare in every type of
condition imaginable. I'm just hoping that  my stomach fares as well as
either model of boat.

Ken  Williams
Sans Souci, Nordhavn  68
www.kensblog.com





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