LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Joe
 
Posts: n/a
Default


DSK wrote:
John Lechmanik wrote:
Although I'm a little experienced at sailing, I'm still learning a

lot of
the little incidental things. Such as pulling out of a dock.


Some of the skills that make for successful sailing have nothing to

do
with actually sailing! But maneuvering a boat is an interesting

challenge.


Here is the fun part. During this time of the year, the wind comes

from a
variety of directions. When the wind comes from the east (port

side of the
boat when in the slip) it's a challenge getting out of the slip.

The first
time I backed out under these conditions I was just out of the

slip, and
turning the boat to starboard when the wind pushed the bow back

around. No
matter what I did, I couldn't get the boat turned into the wind and

was
being pushed by the wind down the marina.


Could you have backed up, stern into the wind, and gotten down the
fairway? It looks funny but it works.


This is true, for most parts..

A couple of points to keep in mind, please forgive me if you already
know these things. The basics always bear repeating....

Know your prop walk. You should have a good sense of how hard the

boat
will try to swing in reverse and in forward, and whether it will

swing
more if throttled up gently or if gunned. Usually, gunning it when in


gear will produce a short burst of prop walk before the boat starts

to
accelerate forward (or aft, if in reverse). You can use this effect!

Another thing to bear in mind is that from a standing start, or when
moving very slowly, the boat will turn *much* tighter one way than

the
other... when prop walk and helm (prop wash against the rudder) are

both
pushing the stern the same way. I bet the time you couldn't get the

bow
into the wind, you were trying to turn it the "wrong" way.


Sounds like it.

The bow always tries to swing downwind. If you use prop wash (as

opposed
to prop walk) to try and force it into the wind from a standing

start,
or while movng slowly, you will fail if the wind is above a certain
strength (another factor to get a feel for) and you will always end

up
going considerably sideways.

In reverse, you have no prop wash effect. You're in free fall until

the
boat gains enough way that flow over the rudder will steer her.


Not so Doug.. You can obtain quite a force sideways not moving at all
and the rudder not being a factor at all.


Boats
have considerable "rotational momentum" so get her turning the way

you
want her to go, before sticking it in reverse. You can use this

effect
to counter prop walk and back up straight.... people who claim you

can't
back up sailboats straight don't know enough to be worth listening to


IMHO...


Agreeded, What is important is learning when flow across your rudder
overpowers walking. One could push off the stern opposite of the way
the props walks hard throttle blast to slow to allow flow over the
rudder to overtake walk and point the require way if walk in not the
way you want to turn. Could also power a 360 with walk and wash, looks
funny, but not as funny as backing the whole length of the cut.



The best thing to do is practice. Take the boat out in a more open

area,
where you can practice maneuvering under power. Note how long it

takes
to bring the boat to a stop, that's the first and most basic step.

Note
your RPMs and how the boat accelerates at different throttle

settings,
also how much prop walk there is. Sit still for a while and note how

the
bow swings downwind. Practice turning both ways, both with and

against
prop walk, practice backing up straight, practice backing up in a
controlled 'S' with some guide mark(s). The key is to gain some
confidence in how the boat will react, how to make it do what you

want
consistently. A big part of this is to observe and know what the boat


wants to do, and use those tendencies as much as you can.

Hope this helps.



And the basic knowledge of spring lines... and the proper times and
ways to use them, should keep you out of trouble in high winds.

Joe



Fresh Breezes- Doug King


  #2   Report Post  
DSK
 
Posts: n/a
Default

In reverse, you have no prop wash effect. You're in free fall until
the
boat gains enough way that flow over the rudder will steer her.



Joe wrote:
Not so Doug.. You can obtain quite a force sideways not moving at all
and the rudder not being a factor at all.


Right, we were already discussing prop walk (and perhaps 'kick' would be
a better term for the prop stream against the rudder than 'prop wash'
since it might be confused with 'prop walk').

The issue is that when you start backing down from minimal way forward,
you have quite limited options to steer the boat until it gains enough
sternway to steer by the flow over the rudder. Whatever the wind & prop
walk are going to do to you, you have to allow for in advance... and
maybe counter with a little pre-rotation of the boat as you come to a
stop. That's what I meant by "free fall."

The two keys to maneuvering IMHO are 1- thinking ahead and 2- being
totally familiar with your control of the boat & it's reactions.

DSK

  #3   Report Post  
Joe
 
Posts: n/a
Default


DSK wrote:
In reverse, you have no prop wash effect. You're in free fall until

the
boat gains enough way that flow over the rudder will steer her.



Joe wrote:
Not so Doug.. You can obtain quite a force sideways not moving at

all
and the rudder not being a factor at all.


Right, we were already discussing prop walk (and perhaps 'kick' would

be
a better term for the prop stream against the rudder than 'prop wash'


since it might be confused with 'prop walk').

The issue is that when you start backing down from minimal way

forward,
you have quite limited options to steer the boat until it gains

enough
sternway to steer by the flow over the rudder.


agreeded

Whatever the wind & prop
walk are going to do to you, you have to allow for in advance... and
maybe counter with a little pre-rotation of the boat as you come to a


stop. That's what I meant by "free fall."


Oh OK... Nothing like a capt Ron style docking, Half speed 45 degree
angle to the dock then full astern...walking your stern in(free fall)to
a perfect butterfly soft landing.

The two keys to maneuvering IMHO are 1- thinking ahead and 2- being
totally familiar with your control of the boat & it's reactions.


3- practice

Joe

DSK


 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Some people are working hard.... Gould 0738 General 10 December 23rd 04 04:23 AM
rec.boats.paddle sea kayaking FAQ [email protected] General 0 September 29th 04 05:19 AM
rec.boats.paddle sea kayaking FAQ [email protected] General 0 February 16th 04 10:02 AM
rec.boats.paddle sea kayaking FAQ [email protected] General 0 January 16th 04 09:19 AM
wanted: live-aboard boaters Power & Motoryacht Cruising 6 September 16th 03 02:25 AM


All times are GMT +1. The time now is 03:23 PM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 BoatBanter.com.
The comments are property of their posters.
 

About Us

"It's about Boats"

 

Copyright © 2017