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Old 22 June 2017, 09:10   #1
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Halmatic arctic/pac 28' specifications questions?

Hey folks,

I'm considering taking on a (sizeable...) project converting an arctic 28' to inboard diesel and generally full fit-out as a dive RIB.

Does anyone have any good reliable numbers on the weight of these things? (any configuration so long as it is known)
I did find the "operators manual" for the pac 22 which had good numbers on dry and laden weights etc. but can't find similar for the 28.

Also would be interested to know the overall width of the hull with the tubes deflated.
I think they are 3.05m wide which would be just about legal so long as the side overhang is permitted on the road still since the regs changed.

This all needs to come in at sub 3500kg on trailer which I am thinking may be tight.

Cheers
Chris
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Old 22 June 2017, 10:10   #2
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Quote:
Originally Posted by yorkie_chris View Post
Hey folks,

I'm considering taking on a (sizeable...) project converting an arctic 28' to inboard diesel and generally full fit-out as a dive RIB.

Does anyone have any good reliable numbers on the weight of these things? (any configuration so long as it is known)
I did find the "operators manual" for the pac 22 which had good numbers on dry and laden weights etc. but can't find similar for the 28.

Also would be interested to know the overall width of the hull with the tubes deflated.
I think they are 3.05m wide which would be just about legal so long as the side overhang is permitted on the road still since the regs changed.

This all needs to come in at sub 3500kg on trailer which I am thinking may be tight.

Cheers
Chris
Hi Chris

Sorry cannot help you with your specific questions but I am sure there was a thread on here about someone doing exactly the same thing. Might be worth a search.

Good luck

Andy
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Old 22 June 2017, 11:50   #3
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Yes I found that thread (twister

Some good info but still looking for these details, he ended up with an ovlov D6/330 for 36 knots.


Still looking at potential engine and drive options myself. Doesn't need to be a race boat but needs enough poke to handle the weather.
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Old 22 June 2017, 12:25   #4
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Have you tried asking Halmatic? They might be happy to give you some specs?



Boating Business | VT Halmatic Ltd
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Old 22 June 2017, 13:12   #5
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Try Humber inflateables they sell them in used boat section
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Old 22 June 2017, 16:12   #6
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These people have a couple of Arctic 28's for sale. On one of them it has a picture of the plate on the trailer and it suggests a max gross weight of 5.4 tonnes. It might be that the trailer has significantly more capacity than required but my guess is that you will struggle to get a Pac 28 and trailer at 3500kg.

DRB Marine Services Limited: Halmatic Arctic 28: 8.5 meter Rib and trailer

They do have a diesel inboard 8.5m Humber RIB for sale which might be what you are after post conversion.
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Old 22 June 2017, 16:19   #7
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I think my guess was incorrect.

Arctic boats | BAE Systems | United Kingdom

Based on the info above and as it is BAE, it could very well be wildly inaccurate, you could do a Pac 28 / trailer combo for 3500kg.
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Old 23 June 2017, 01:43   #8
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I have to question the use of such a rib for scuba divers. I thought that these ribs have there tubs out of the water at rest. On top of that the tubes are of a large diameter. This combo woul make for a very difficult rib to re enter from the water. I would advise you study photos of ribs at rest before you purchase.
Tsm
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Old 23 June 2017, 01:57   #9
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I have to question the use of such a rib for scuba divers. I thought that these ribs have there tubs out of the water at rest. On top of that the tubes are of a large diameter. This combo woul make for a very difficult rib to re enter from the water. I would advise you study photos of ribs at rest before you purchase.
Tsm
ladder mick mine was attached to the A frame and folded up when not in use
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Old 23 June 2017, 02:21   #10
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Martini of this parish had a 28 with twin 225 opti's on the back. He doesn't post here much these days but you will find his build thread and you could try a pm.
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