Join the club. We (and Curtis comments later) have a boat with a flat
transom. Thus, we can notice the squat more than those with boats with
extended sterns and reverse transoms. Mine (30-1) splatters diesel crud all
over the bottom half of the transom as I am motoring at any speed at all. I
used to put a hose on the exhaust, but that looked so bad that I decided I
should just wash off the crud after a vigorous motor.
Comments below on hull speed are relevant.
I cruised on a friends motorsailor - at 7 knots (big motor) the boat was
pretty level, at 8, the bow came up a foot and the stern dropped a foot, at
9, more of the same. Think about a power boat coming up on plane......
Physics rules.
Gary
----- Original Message -----
From: "Joe at Zialater via CnC-List" <cnc-list@cnc-list.com>
To: <cnc-list@cnc-list.com>
Sent: Sunday, January 11, 2015 12:13 PM
Subject: Stus-List The stern squats at high speed
Hi Tom - I notice the same thing on my 30-1 - as I increase revs the stern
squats. I have a two blade fixed prop on an Atomic 4. I sometimes adjust
the throttle by looking over the stern rather than the speedo - kinda
handy.
At high revs my exhaust is completely underwater while it is a few inches
above water at rest.
I don't know if it is really a problem or just a matter of physics - my
power boat does the same thing, albeit more drastically.
Joe Boyle
Zia, 1975 30-1
Annapolis
Message: 5
Date: Sun, 11 Jan 2015 11:54:00 -0500
From: TOM VINCENT <tvince...@msn.com>
To: C&C Forum <cnc-list@cnc-list.com>
Subject: Stus-List The stern squats at high speed
Message-ID: <bay168-w12245ac078651d15ee5bd5eed...@phx.gbl>
Content-Type: text/plain; charset="iso-8859-1"
I was wondering if anyone else has the same problem that I have with my
36'
that has the 3 cylinder Yanmar 30 HP. While motoring if I increase the
speed
the stern starts squatting the faster I go. I top out at 6.5 knots of
speed
and the stern is way down. I have a martec 18'' folding prop and I do not
know the pitch.
Tom Vincent
Frolic II 1979 36' C&C
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