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Old 30 July 2006, 18:22   #1
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PVC "RIB"

Hi,

A day ago I saw a self-made PVC "RIB" like boat. The boat had a v-hull like a RIB has, and the rest of the boat was PVC. From a distance it looks like a RIB, but it isn't inflatable. I think this boat is very cool because it is less vulnerable than rubber, and very stable as well.

I've never seen a boat like this, and I want to know more about it. Has someone also made a boat like that ? Any further thoughts about it ?

Btw the way, excuse me for my English, I'm from Holland..
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Old 30 July 2006, 18:39   #2
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Quote:
A day ago I saw a self-made PVC "RIB" like boat. The boat had a v-hull like a RIB has, and the rest of the boat was PVC. From a distance it looks like a RIB, but it isn't inflatable. I think this boat is very cool because it is less vulnerable than rubber, and very stable as well.

I've never seen a boat like this, and I want to know more about it. Has someone also made a boat like that ? Any further thoughts about it ?
I think I might have a boat like that.

It is not PVC it is molded from polyethylene (the same way as many modern racing/training dinghies). See http://rib.net/forum/showthread.php?...hlight=sparfel for some pics.

However, if it is similar to mine then it is not "home made" but mass produced - as the tooling is expensive so it needs volume production to justify. I am aware of boats like this in the style of RIBs over 5m long.

There are at least 4 manufacturers making "ribs" like this.

If I have understood you correctly then I can probably provide you with more info - but please confirm I am correct before I waffle on for a few pages!

nEIL
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Old 31 July 2006, 05:00   #3
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Quote:
Originally Posted by Polwart
I think I might have a boat like that.

It is not PVC it is molded from polyethylene (the same way as many modern racing/training dinghies). See http://rib.net/forum/showthread.php?...hlight=sparfel for some pics.

However, if it is similar to mine then it is not "home made" but mass produced - as the tooling is expensive so it needs volume production to justify. I am aware of boats like this in the style of RIBs over 5m long.

There are at least 4 manufacturers making "ribs" like this.

If I have understood you correctly then I can probably provide you with more info - but please confirm I am correct before I waffle on for a few pages!

nEIL
Hi,

I've seen the pics, and I'm sure the one I've seen is different. It's made from this material:



That was "welded" together (not very nice, but it works) and painted black. I'm sure it was self build, not mass done by a manafacturer.

It just were round tubes, nothing special, just looked like a regular inflatble boat, but with the difference that it is not inflatable .

It was like 5/6 meters long. I think they just took a v-hull from a RIB, en reproduced the inflatable tube, but from PVC tubes.

So your story is very clear to me, but it was not the same as what I've seen.
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Old 31 July 2006, 05:04   #4
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OK in that case its a new "form" to me.

Neil
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Old 31 July 2006, 06:19   #5
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Sounds like a good idea to me, in the few short months I have had mine I have had cause to wonder on several occasions why somebody didn't produce a boat that looked like a rib, had the buoyancy of a rib, but didn't have the silly fragile bit round the outside

I suppose the main downside would be the lack of shock absorbing with rigid tubes when you either had a heavy landing or crashed in to something?
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Old 31 July 2006, 06:44   #6
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Originally Posted by BogMonster
Sounds like a good idea to me, in the few short months I have had mine I have had cause to wonder on several occasions why somebody didn't produce a boat that looked like a rib, had the buoyancy of a rib, but didn't have the silly fragile bit round the outside

I suppose the main downside would be the lack of shock absorbing with rigid tubes when you either had a heavy landing or crashed in to something?
A speedboat hasn't absorbing either .
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Old 31 July 2006, 12:27   #7
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A guy I know (but haven't seen in a really long time now) had RIB, except that the tubes were formed in aluminum. Don't recall the manufacturer offhand. It was about, oh 16 feet or so, and aside from the shine, looked exactly like a true inflatable.

There's also this company: http://www.acbboats.com/

jky
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Old 31 July 2006, 12:53   #8
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Originally Posted by mcdronkz
A speedboat hasn't absorbing either .
Ah but you haven't seen my driving, I need something surrounded by airbags
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Old 31 July 2006, 15:15   #9
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Is this what you are looking for?

Link to a producer: http://www.polarcirkel.no

Have driven these boats from time to time while guiding fishing-tourists.
They are a steady "fishing platform".
goes quite well with a 90hp.
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Old 31 July 2006, 15:40   #10
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Quote:
Originally Posted by BogMonster
Sounds like a good idea to me, in the few short months I have had mine I have had cause to wonder on several occasions why somebody didn't produce a boat that looked like a rib, had the buoyancy of a rib, but didn't have the silly fragile bit round the outside

I suppose the main downside would be the lack of shock absorbing with rigid tubes when you either had a heavy landing or crashed in to something?
Actually shock absorbtion isn't probably as bad as you would expect. If you are ever in Scotland feel free to come and try it. I guess most of the time the tubes on a "real" rib are out of the water anyway. Obviously the advantage is robustness - much more so than a fibreglass boat and no risk of punctures like a rib (on the otherhand there must be less protection for otherboats you come along side). One of the manufacturers has a demo video showing a boat bouncing 30ft onto a concrete car park and hitting rocks hard with the bow. The later scratched the bow (polishes out with wet and dry and hair dryer!) and the former caused no damage to the boat - but did snap a cheap plastic cleat that it bounced onto!
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