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Courtney Thomas
 
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Default optimal outboard motor size for hardshell dinghy to rescue grounded sailboat ?

For a 10 ton modified keel [cutaway forefoot] GRP sailboat, what is
suggested as a probable optimal size outboard for freeing up the
described vessel upon grounding ?

I realize all the power you can get may be a good thing, but given that
the dinghy is only about 8' long, what's realistically recommended ?

What brand ?

Appreciatively,
Courtney
--
s/v Mutiny
Rhodes Bounty II
lying Oriental, NC
WDB5619

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Geoff Schultz
 
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I wouldn't go above the maximum rated HP for the dinghy. For an eight
footer, I would guess that would be about 8-10 HP. Personally I prefer
Yamaha motors as you can get parts for them everywhere, but it's highly
dependent on where you plan to cruise.

-- Geoff

Courtney Thomas wrote in news:41C6EAB2.4010003
@joimail.com:

For a 10 ton modified keel [cutaway forefoot] GRP sailboat, what is
suggested as a probable optimal size outboard for freeing up the
described vessel upon grounding ?

I realize all the power you can get may be a good thing, but given that
the dinghy is only about 8' long, what's realistically recommended ?

What brand ?

Appreciatively,
Courtney


  #3   Report Post  
Roger Long
 
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I would suggest a A rated CAT 3406 Turbocharged and aftercooled with 6:1
reduction and the largest diameter and flattest pitch prop the engine will
handle. You'll need to sponson the dinghy to carry the weight and come up
with some sort of rig to hoist the whole thing on and off your boat.

Seriously, nothing smaller than your Bounty is apt to be of much use in
getting you unstuck if the auxiliary won't do it. That isn't how it is done.

You hang the biggest anchor on the boat over the stern of the dinghy with a
knot you can slip. A loop around the thwart with a spare pelican hook is a
good rig. Then, you row the anchor out to the very end of the rode. You don't
want to be frigging around with an outboard at a time like this or want the
extra weight in the dinghy. If the holding ground is really poor, lower a
weight or another anchor about half way down the anchor line.

Set the anchor and run the rode back to your biggest winch if you don't have
an anchor windlass, and start hauling. If you are still stuck, try hanging
some weight and maybe a couple crewmembers from the end of the boom and
vanging it full outboard. The heel will reduce your draft a couple inches
which may be critical. With many keep profiles, moving weight forward will
have the same effect.

Make sure everyone stays well out of line with the anchor rode when the
strain is on it. If it lets go, it will snap back like a rubber band.

Or, wait for the tide to come up a bit.

BTW, right at high tide is a really, really, good time to be sure you have
plenty of water under your keel. If you are going to go poking into places
where you think you might touch, try to do it on a rising tide.

--
Roger Long



"Courtney Thomas" wrote in message
...
For a 10 ton modified keel [cutaway forefoot] GRP sailboat, what is
suggested as a probable optimal size outboard for freeing up the described
vessel upon grounding ?

I realize all the power you can get may be a good thing, but given that
the dinghy is only about 8' long, what's realistically recommended ?

What brand ?

Appreciatively,
Courtney
--
s/v Mutiny
Rhodes Bounty II
lying Oriental, NC
WDB5619



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akcarlos
 
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I agree with you , I assume you have some experience in doing this.

Having tried this using a dingy with an outboard it is very difficult
to control without a centreboard and is in fact easier to move a yacht
by rowing the dinghy and pulling the boat.

  #5   Report Post  
Rodney Myrvaagnes
 
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On 20 Dec 2004 19:40:20 -0800, "akcarlos"
wrote:

I agree with you , I assume you have some experience in doing this.

Having tried this using a dingy with an outboard it is very difficult
to control without a centreboard and is in fact easier to move a yacht
by rowing the dinghy and pulling the boat.


We can't tell what you agree with since you deleted whatever you are
answering. But, if the larger boat is afloat it is much easier to tow
with a dinghy/outboard lashed alongside than towing ahead.

Rodney Myrvaagnes J36 Gjo/a

The destruction of the World Trade Center was
a faith-based initiative. -- George Carlin


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akcarlos
 
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you can blame the snip on Goggle but I'm guessing you knew exactly what
I was replying to as you posted your coments.

A dinghy lashed to the side would work well but can be a problem if
there is not much room to move (in my case it was a river with many
moorings)

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R.W. Behan
 
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It is possible to free up a grounded sailboat with a small dink and a small
outboard. You tie the longest spare line you have to the main halyard, and
hoist it to the top of the mast. Then, with the bitter end in the dink, you
head for deep water 'til the line is taut--and then apply full power. (This
is most effective if you can pull at a right angle to the boat's
centerline.) The leverage on the boat is amazing, and you can probably heel
it, say, 30 degrees or more. That will diminish the effective draft of the
boat--hopefully enough to free it, so just keep hauling until your boat is
in deeper water. It depends on how hard the boat is aground, of course, but
I've freed my Westsail 32 with a 2hp. outboard in a 9' dink. Fair winds,
Courtney


"Courtney Thomas" wrote in message
...
For a 10 ton modified keel [cutaway forefoot] GRP sailboat, what is
suggested as a probable optimal size outboard for freeing up the described
vessel upon grounding ?

I realize all the power you can get may be a good thing, but given that
the dinghy is only about 8' long, what's realistically recommended ?

What brand ?

Appreciatively,
Courtney
--
s/v Mutiny
Rhodes Bounty II
lying Oriental, NC
WDB5619



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Roger Long
 
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Neat idea. I wouldn't do it though without setting the kedge first or you
might find yourself chasing your boat, perhaps back into shallow water. If
someone reliable is on board, that may not be an issue. If there is someone
on board, have them winch on the kedge while you pull from the masthead with
the dinghy.

With all these ideas, there is either going to be a rising tide, in which
case you can just wait, or a falling tide. In Maine at least, it will be
hard to get anything rigged in time to prevent a falling tide from getting
you stuck fast. If you aren't off PDQ, you're going to be there a while.
I've set a kedge and gotten a boat off on a falling tide but everyone on
board said they never knew I could move so fast. They found it quite
amusing, especially as they didn't know we had touched (while docking in a
harbor) and couldn't figure out why I suddenly exploded into frantic and
unexplained activity.

--

Roger Long



"R.W. Behan" wrote in message
...
It is possible to free up a grounded sailboat with a small dink and a
small outboard. You tie the longest spare line you have to the main
halyard, and hoist it to the top of the mast. Then, with the bitter end
in the dink, you head for deep water 'til the line is taut--and then apply
full power. (This is most effective if you can pull at a right angle to
the boat's centerline.) The leverage on the boat is amazing, and you can
probably heel it, say, 30 degrees or more. That will diminish the
effective draft of the boat--hopefully enough to free it, so just keep
hauling until your boat is in deeper water. It depends on how hard the
boat is aground, of course, but I've freed my Westsail 32 with a 2hp.
outboard in a 9' dink. Fair winds, Courtney


"Courtney Thomas" wrote in message
...
For a 10 ton modified keel [cutaway forefoot] GRP sailboat, what is
suggested as a probable optimal size outboard for freeing up the
described vessel upon grounding ?

I realize all the power you can get may be a good thing, but given that
the dinghy is only about 8' long, what's realistically recommended ?

What brand ?

Appreciatively,
Courtney
--
s/v Mutiny
Rhodes Bounty II
lying Oriental, NC
WDB5619





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Don White
 
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We put a Viking 28 aground while trying to sail up a narrow channel. You
could look overboard and see a minefield of very large boulders and we were
in it. Since the wind was from the north we were able to use both sails to
steer the boat in a westerly direction. The wind and combined weight of the
crew keeled the boat quite a bit and we crashed and banged bouncing over one
boulder to another until we were free. Then we raced back to the yacht club
to lift the 5500 lb boat out of the water and hanging over the dock so we
could inspect it.
Minimal damage...but it sure sounded bad.


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