“1941 CMP Amphibious vehicle” (4x4)

[Jakko Westerbeke]

Originally Posted by Hanno Spoelstra

From what I know and what I read here I'd say this vehicle is at best a post war military conversion of a GMC DUKW, but much more likely a postwar civilian conversion using some CMP components.

If it is a conversion from a DUKW, it seems to be a pretty extensive one. It proved a little difficult to find decent DUKW drawings online, but even with a poor-resolution one overlaid on the photo, it’s clear that if this is a converted DUKW hull, a lot of cutting must have been involved:

DUKW-CMP hybrid.jpg

The shape of the front wheel well is different both at the front and rear, the rear wheel well is much smaller and squarer, not to mention further forward, the whole foredeck and the cowls alongside the cab are different, etc.