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  #1  
Old 15-04-24, 10:54
Jakko Westerbeke Jakko Westerbeke is offline
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I take it the first two photos are of the CMP conversion, since it has the steering wheel on the right-hand side, while the last photo is of a DUKW? If so, I’d say the CMP is a copy/“inspired by” rather than having been adapted from a DUKW. It looks like somebody had a DUKW at hand and thought, “We need another vehicle like that, let’s build something much like it on this CMP we also have.”
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  #2  
Old 15-04-24, 13:06
David Herbert David Herbert is offline
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I agree with Jakko. It is too professional a construction to be home made or a mock up or a scam and I see no evidence that it is a conversion of a DUKW - there are too many structural differences and no signs of modifaction to the wheel arches which are different to DUKW ones.

I think that the most likely explanation is that it is a post war Italian construction using then readily available new or nearly new CMP parts.

David
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  #3  
Old 15-04-24, 15:30
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Hanno Spoelstra Hanno Spoelstra is offline
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Default To Duck or DUKW, that's the question

Quote:
Originally Posted by Jakko Westerbeke View Post
I take it the first two photos are of the CMP conversion, since it has the steering wheel on the right-hand side, while the last photo is of a DUKW?
Yes,...
Quote:
If so, I’d say the CMP is a copy/“inspired by” rather than having been adapted from a DUKW. It looks like somebody had a DUKW at hand and thought, “We need another vehicle like that, let’s build something much like it on this CMP we also have.”
... plus I think they used some of the more intricate fittings like the propeller drive line and ducts to construct an amphibious vehicle for fire brigade/ emergency services.

The % of DUKW components is anyone's guess, this is very much a case of "Trigger's Broom". US-based operators of DUKWs have extensively rebuilt and modified DUKWs to a stage where they are a mere "dataplate restoration/ reconstruction" like many of the warbirds flying today

3795295_072018-cc-ducks-then-now-split-img.jpg BostonDuckTours.jpg
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  #4  
Old 15-04-24, 18:38
Harry Moon Harry Moon is offline
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Default British

perhaps a prototype or pre production with the UK as the client?
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Old 15-04-24, 21:53
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Hanno Spoelstra Hanno Spoelstra is offline
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Quote:
Originally Posted by Harry Moon View Post
perhaps a prototype or pre production with the UK as the client?
GMC was churning these out by the 1000’s; why would the UK need/ want to source these from Canada? If there would have been a need for a second source, they surely would have chosen to build the DUKW to print. And if this was a bespoke Canadian design, by now we would have surely found traces in the AEDB or similar period sources. My $0.02 CDN…
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Old 16-04-24, 01:48
Harry Moon Harry Moon is offline
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Default Speculation

It wasn’t made in Canada but appears that it may have been built by yellow truck in Michigan in a plant that in the same year geared up for and produced many DUKW. I just can’t see anyone building a one off outside of a trials or pre production product when 6x6 DUKW were plentiful and cheap.
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  #7  
Old 16-04-24, 07:20
Bruce MacMillan Bruce MacMillan is offline
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There may be an Italian connection as they used amphibious fire vehicles. Perhaps a vehicle that has been done over as a military vehicle?
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  #8  
Old 16-04-24, 12:25
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Hanno Spoelstra Hanno Spoelstra is offline
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Quote:
Originally Posted by Bruce MacMillan View Post
There may be an Italian connection as they used amphibious fire vehicles. Perhaps a vehicle that has been done over as a military vehicle?
Good lead, thanks! The vehicle you depicted is a Fiat Iveco 6640 G, an Italian amphibious vehicle which was "built from the early 1950s till the 1980s for the Italian government organisations". Our subject vehicle may well have been a prototype for the Fiat Iveco 6640 G...

The Italian The National Fire and Rescue Service (https://www.vigilfuoco.it/aspx/Page.aspx?IdPage=5374) used a host of ex-WW2 vehicles during its existence: https://www.vigilfuoco.it/aspx/page.aspx?IdPage=2903

960px-Fiat_6640_AMDS_Vigili_del_Fuoco,_vista_anteriore_destra.jpg
Source: https://commons.wikimedia.org/wiki/C...Fiat_6640_AMDS
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  #9  
Old 16-04-24, 10:53
Jakko Westerbeke Jakko Westerbeke is offline
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Quote:
Originally Posted by Hanno Spoelstra View Post
If there would have been a need for a second source, they surely would have chosen to build the DUKW to print.
The UK did want, and produced, an alternative to the DUKW:

Terrapin Middelburg (col. J.C. van Winkelen).jpg

But given that they had both, I agree that it would be unlikely to want a third source for yet another vehicle, especially — as you mention — DUKW production was well underway in the USA.
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  #10  
Old 16-04-24, 12:01
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Quote:
Originally Posted by Harry Moon View Post
It wasn’t made in Canada but appears that it may have been built by yellow truck in Michigan in a plant that in the same year geared up for and produced many DUKW. I just can’t see anyone building a one off outside of a trials or pre production product when 6x6 DUKW were plentiful and cheap.
To me that's an indication DUKW parts were used in its construction. The question is if DUKWs were plentiful and cheap in the area where the subject vehicle was constructed.


Quote:
Originally Posted by Jakko Westerbeke View Post
The UK did want, and produced, an alternative to the DUKW:

But given that they had both, I agree that it would be unlikely to want a third source for yet another vehicle, especially — as you mention — DUKW production was well underway in the USA.
Good point, but the Terrapin was an indigenous product.
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  #11  
Old 17-04-24, 11:36
Jakko Westerbeke Jakko Westerbeke is offline
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Quote:
Originally Posted by Hanno Spoelstra View Post
Good point, but the Terrapin was an indigenous product.
What I meant was that, given that the UK was developing/building the Terrapin as a DUKW alternative, I’d think it unlikely they would need another DUKW alternative on the basis of a CMP. Unless, of course, that was perhaps developed alongside the Terrapin? But then I would think there would be information about it in sources relating to Terrapin development.
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