In trying to understand a boat's stability, I've run across both an "A/B"
ratio which is pretty straight forward but have also encountered the "GM" or
metacentric height value.  I can't find anywhere whether a high or low value
is better. For example Selene advertizes their 54 with a GM of 4' 10 1/2"
under full load and Ocean Alexander advertizes their 54 at 4'6" dry and 3'
8" under full load.    Which is better?

Any help would be greatly appreciated.

Bob Arrington

bobarrington@comcast.net

M: 410-598-8568

H:  410 377-4994

Thank you all, I found the answer - larger is better!

Bob Arrington
bobarrington@comcast.net
M: 410-598-8568
H:  410 377-4994

-----Original Message-----
From: passagemaking-under-power-bounces@lists.samurai.com
[mailto:passagemaking-under-power-bounces@lists.samurai.com] On Behalf Of
Bob Arrington
Sent: Sunday, March 27, 2011 9:02 PM
To: passagemaking-under-power@lists.samurai.com
Subject: [PUP] Definition of GM or the Metacentric Height

In trying to understand a boat's stability, I've run across both an "A/B"
ratio which is pretty straight forward but have also encountered the "GM" or
metacentric height value.  I can't find anywhere whether a high or low value
is better. For example Selene advertizes their 54 with a GM of 4' 10 1/2"
under full load and Ocean Alexander advertizes their 54 at 4'6" dry and 3'
8" under full load.    Which is better?

Any help would be greatly appreciated.

Bob Arrington

bobarrington@comcast.net

M: 410-598-8568

H:  410 377-4994

http://lists.samurai.com/mailman/listinfo/passagemaking-under-power

To unsubscribe send email to
passagemaking-under-power-request@lists.samurai.com with the word
UNSUBSCRIBE and nothing else in the subject or body of the message.

Passagemaking Under Power and PUP are trademarks of Water World Productions.