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Old 07 March 2008, 10:03   #1
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Country: UK - England
Town: Midlands
Boat name: Viper
Make: XS
Length: 7m +
Engine: Outboard 2x 90
Join Date: Jul 2006
Posts: 177
Auxilliary for 6.5-7m boat

I use my boat for diving so carry quite a bit of weight around with me. I've always been fan of twin engines for back up but there really isn't much choice for a replacement boat at the right price (cheap) with twins on.

Does anybody have any experience/ recommendation of what can be achieved with a reasonably sized aux. on a fairly loaded 6.5m-7m? I can't help but feel an aux. really is going to struggle with that sort of boat.
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Old 07 March 2008, 17:17   #2
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Country: UK - England
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Boat name: Osprey
Make: Osprey Vipermax
Length: 5m +
Engine: E-tec 300 G2
MMSI: TBC
Join Date: Dec 2006
Posts: 4,013
Quote:
Originally Posted by oracle View Post
I use my boat for diving so carry quite a bit of weight around with me. I've always been fan of twin engines for back up but there really isn't much choice for a replacement boat at the right price (cheap) with twins on.

Does anybody have any experience/ recommendation of what can be achieved with a reasonably sized aux. on a fairly loaded 6.5m-7m? I can't help but feel an aux. really is going to struggle with that sort of boat.
Lots of threads on the subject if you search for Aux or Auxilary
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Old 21 March 2008, 10:05   #3
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Country: Poland
Boat name: ONYX
Make: HALMATIC PACIFIC 22
Length: 6m +
Engine: FORD MERMAIDtd 140HP
Join Date: Feb 2003
Posts: 86
Quote:
Originally Posted by oracle View Post
I use my boat for diving so carry quite a bit of weight around with me. I've always been fan of twin engines for back up but there really isn't much choice for a replacement boat at the right price (cheap) with twins on.

Does anybody have any experience/ recommendation of what can be achieved with a reasonably sized aux. on a fairly loaded 6.5m-7m? I can't help but feel an aux. really is going to struggle with that sort of boat.
I do have on my boat (halmatic pacific 22 with heavy mermaid diesel inboard) an auxilliary Johnson 15 HP engine. That gives the speed for the boat, fully loaded (empty boat is approx 2,5 tones) with 4 persons on board 6-7 kn, on calm water.
You can see pictures in a thread: Arund Cape Horn on a RIB or on website: http://picasaweb.com/arekpawelek/
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RIB x-ing of Atlantic on Southern Route 1998;
FIRST RIB SOLO CAPE HORN CIRCUMNAVIGATION 2008
If You are not living on the edge, You are taking too much space...
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Old 21 March 2008, 13:00   #4
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Country: UK - England
Town: Midlands
Boat name: Viper
Make: XS
Length: 7m +
Engine: Outboard 2x 90
Join Date: Jul 2006
Posts: 177
That's quite a good speed, that's useful.

Thanks
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Old 21 March 2008, 13:03   #5
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Country: UK - England
Town: Midlands
Boat name: Viper
Make: XS
Length: 7m +
Engine: Outboard 2x 90
Join Date: Jul 2006
Posts: 177
Serious looking boat too. I love the wheel change with the jack on a rock and the collapsible tubes going into the container!!
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Old 22 March 2008, 05:43   #6
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Country: Poland
Boat name: ONYX
Make: HALMATIC PACIFIC 22
Length: 6m +
Engine: FORD MERMAIDtd 140HP
Join Date: Feb 2003
Posts: 86
Maybe You alreday note one improvement made to my auxiliary engine. I note, that when the engine was in "up" position, it was quite hard for mounting and transom when going on waves. So I put a rope at the leg of the engine and and reeled it through the block mounted above on the A-frame and then to the snatch on the side of the A-frame. That makes riding on the waves with engine "up" stressless and it is much much easier to hoist the engine into "up" position.
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FIRST RIB SOLO CAPE HORN CIRCUMNAVIGATION 2008
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Old 24 March 2008, 17:27   #7
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Country: UK - England
Town: Midlands
Boat name: Viper
Make: XS
Length: 7m +
Engine: Outboard 2x 90
Join Date: Jul 2006
Posts: 177
Another good idea. One of our earlier smaller boats had the raise/lower Aux bracket and it REALLY took some lifting and was none too kind on any fingers left lying around
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