Tankluver
Would a Kriegsmarine uniform
Which uniform?
Kriegsmarine had a blue and a white uniform, in both working and dress form (jumpers or a jacket). Snipes has a distinctive rating insignia (as most navies do).
Only the coast artillery Kriegsmarine wore feldgrau, and in the original pattern with grey trousers and green collars, all using gold insignia on a green background. They did not field Engineers; the snipes used their rating badge of a gear in gold on the sleeve.
In 1943 KM changed to all red insigna for Rating, and kept (most of) the gold Rank insignia.
If a person needed to be ferried out to some moored vessel, the KM would just use a launch of some sort, which they would have had in operation as "water taxi" and were hugely more efficient in the water.
Navies do what navies do--you don't send an LCM if a launch is available; you don't send a 40' personnel boat if a 26' whaler is available, particularly if only one person is being moved.
Army Engineers, though, are somewhat nuts the world over, they will use a bridge tug because that's what they have (and becasue no one thought to get them a jon-boat).
Heer Engineers appear to use black piping.