Message: 4 
Date: Thu, 18 Jul 2013 12:24:03 -0400 
From: "Marek Dziedzic" <dziedzi...@hotmail.com> 
To: <cnc-list@cnc-list.com> 
Subject: Re: Stus-List C&C 30 MK1 backing help 
Message-ID: <blu177-ds62368ea68d0b1f3e08d17ce...@phx.gbl> 
Content-Type: text/plain; charset="iso-8859-1" 
 
I find that the prop walk is more prominent if you keep low revs in reverse 
(and the transmission engaged). To the point that if I reverse at very low 
speed (idle) with the transmission in reverse the boat goes straight back even 
if the rudder is all the way to starboard (the prop walk and the rudder action 
cancel each other out).  
 
To solve this problem I don't keep the transmission in reverse; rather, I use 
quick "bursts of power" in reverse and disengage (alternating). this gives me 
enough speed to back out, eliminates the prop walk (the propeller is not 
turning most of the time) and the rudder action allows me to control the boat. 
it seems to work. 
 
Marek (in Ottawa) 


The same with my C&C 30. I find getting some speed up in reverse with the 
rudder centered, then shifting to neutral before
attempting to steer works well. With low to moderate revs in reverse and the 
rudder turned to port the steering is quirky at best.

I have an offset shaft, comes out on the port side and has a cutlass bearing. I 
have not seen a C&C 30 MK 1 with the shaft
directly on the center line.

Some notes on docking ...

1) try to determine your lowest safe speed to dock with. A starting point is in 
clear safe water with a representative wind and
the sails in their normal dowsed state motor gently broadside to the wind and 
feel where you start to looses steerage or
require too much helm to hold course. In my case a 6 - 10 kt crosswind ( at 
least at mast head ) is normal and I find
1.2 kts forward to be about as slow as I can go and keep things in hand. When 
docking make sure you have enough speed
coming in. As others have pointed out a burst of revs at low boat speed cause 
prop walk and may make steerage hard.

2) I have crew train and practice at docking ( Windburn is mainly used for 
racing ), a bit of comfort knowing we can get
back safely if I am disabled. I give the crew three points at which to do 
things. First is to watch the speed, about 1.4 - 1.6 kts
approaching the slip. When the mast is close to lining up with the end of the 
finger dock they sweep into a 90 degree turn
and watch the speed drop to 1.2 - 1.4 kts. This is usually done in neutral, but 
may be idling in forward or reverse to slightly
adjust the speed. Second they need to squarely come in to the slip, lining up 
with the bow of boat on the far side. I find
it difficult for new crew to see and try to come into the finger dock at the 
correct speed and angle. The third step is when
the bow crosses the end of the finger dock the crew steers up into the inside 
corner of the dock. Most of the time the
first fender just back of the shrouds eases into the dock about 3 - 5' from the 
outside end, someone steps off and holds
the lifeline while the crew on helm steers back to center and may do a touch of 
reverse.

I realize this is not a perfect docking technique but for someone new or in 
training it gives them three clear points
of reference that they can relate to.

3) If the crosswind is pushing us onto the finger dock I have the crew make the 
turn slightly later so we start a bit
further off the dock but still come in square. If a stronger wind is pushing us 
off the dock the turn is earlier and
for the first bit it looks like we will hit the finger dock, but still I get 
the crew to square up. I feel getting the boat
sideways, too much power or helm ends up being a bad combination with someone 
learning.


Mike
C&C 30
Windburn









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