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Re: [PUP] Passagemaker attributes - pilothouse location

T
Truelove39@aol.com
Mon, Jan 26, 2009 12:14 AM

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@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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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@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 **************A Good Credit Score is 700 or Above. See yours in just 2 easy steps! (http://pr.atwola.com/promoclk/100000075x1215855013x1201028747/aol?redir=http://www.freecreditreport.com/pm/default.aspx?sc=668072%26hmpgID=62%26bcd=De cemailfooterNO62)