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(no email)
Date: Wed Apr 11 2007 - 09:09:42 EDT
Sorry Michael, but you are not correct in this matter. All the keel-stepped
masts I have seen are wedged at the partners (where the mast passes through
the deck) with wooden wedges (or Spartite). The partners are not simply a
hole in the roof but are an integral part of the rig which stiffens the mast
and helps keep it in column. There is DEFINITELY a "pinch" effect.
By the way, the "pinched spaghetti" example was given to me by Brion Toss,
and it is very apropos to the situation.
Your statement that the deck would be damaged by "mast movement" is correct,
IF THE MAST MOVED. But in fact your mast should not be moving at the deck
level. What does happen with keel-stepped boats is that there is a
squeezing effect from the rig under tension which forces the deck upwards.
That is why a tension rod or tangs are usually added to hold the deck down.
It is the opposite of the deck-stepped mast with the compression post.
That's another difference, I suppose, that the cabin roof is under a
different kind of load with the different mast configuration.
Keel vs. Deck Stepped? It is a matter of preference as in all things
nautical. Ask ten skippers, get ten answers...
Regards
Jeff
Jeffrey M. Stander
listserv moderator and webmaster
s/v BEATRIX - KP44 #276 (1980)
SKYPE ID: pacific_voyager
www.kp44.org
www.svbeatrix.com
-----Original Message-----
From: [mailto:]
On Behalf Of delviento2
Sent: Wednesday, April 11, 2007 5:09 AM
To:
Subject: [world-cruising] Re: boat shopping
Respectfully, I disagree with Jeff. The pinched spaghetti illustration does
not work because a keel-stepped mast is not "pinched" where it goes through
the deck, in fact, it is not attached to the deck in any way. .......
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