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Old 23 September 2016, 09:39   #1
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Humber destroyer 7.0

Considering buying a used(can be considered a project boat) Humber destroyer 7.0,
narrow beam RIB from 1995. have not seen the boat Yet, but owner claims that the deck is
GRP, no plywood? Can it be, taught most of the rib has a plywood/GRP composite deck?

Any taught about the hull, how does it handle the sea, any disadvantages due to rather narrow hull(except for lack of internal space)?

Thanks
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Old 23 September 2016, 12:18   #2
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Narrow hull will clearly give less deck space but in terms of seakeeping be better in the waves at speed due to less width hitting them. Like a knife vs a brick.

It will roll at rest slightly more but I doubt you'd notice much as the tubes on a destroyer likely rest on the water at the rear.

Didn't know there were GRP decks... Could have been possibly.
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Old 23 September 2016, 12:22   #3
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Narrow hull = more chance of stuffing in a following sea, a la attaque


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Old 23 September 2016, 13:30   #4
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Narrow hull = more chance of stuffing in a following sea, a la attaque


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this may sound silly but what do you mean
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Old 23 September 2016, 13:34   #5
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Good point regarding the stuffing. But think it will in any case give some comfort compared to my 5.4. A 7.0m is more than i need but reasonable priced little bigger ribs are rare over here. Will inspect it on Sunday, will let You know about deck material findings. Will take a small Makita drill along, then will know(if they let me)

It has an old Suzuki 150 2 stroke(-89-90), apparently in working order but guess that is not worth much.
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Old 23 September 2016, 13:40   #6
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this may sound silly but what do you mean

Well, use HPs analogy, a narrow beam is "sharper" so in a following sea, I.e. The waves/swell behind you, as you slide down a wave into the trough, a narrow beam is more prone to burying it's nose into the base of the wave in front. This causes a rapid halt with water over the bow, in extreme cases the wave behind you (that you just slid down) now comes over the stern & swamps the boat. A wider beam has a "blunt" profile & is less likely to stuff, preferring to ride up the back of the wave. I've been in an Attaque sat up to the tube tops in water after a particularly impressive stuffing. Any boat will stuff given the circumstances & careless handling, but narrow beams are less forgiving.


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Old 23 September 2016, 13:44   #7
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thanks for clearing that up
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Old 23 September 2016, 13:47   #8
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thanks for clearing that up

You're welcome👍


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Old 23 September 2016, 14:27   #9
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Quote:
Originally Posted by HUMBER P4VWL View Post
Narrow hull will clearly give less deck space but in terms of seakeeping be better in the waves at speed due to less width hitting them. Like a knife vs a brick.

It will roll at rest slightly more but I doubt you'd notice much as the tubes on a destroyer likely rest on the water at the rear.

Didn't know there were GRP decks... Could have been possibly.
You reckon!?...Oh..maybe that's why the RNLI Hardboat Off shore rough weather rescue fleet like "Shannon" "Tamar" and "Severn" are so Narrow and pointy then!
Maybe they should Trade in thier Atlantic RIBs for Revengers and Cougars too?
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Old 23 September 2016, 15:14   #10
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Quote:
Originally Posted by HUMBER P4VWL View Post
Narrow hull will clearly give less deck space but in terms of seakeeping be better in the waves at speed due to less width hitting them. Like a knife vs a brick.
Thanks for clearing that up!

I'll slow down a bit from now on, then...
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