I concur with Tony, all the info available on the net say it's a
Type VII-C
U-boat (U96)
Incidentally it also says the models built for Das Boot were also the ones used in Raiders of the Lost Ark .... cool eh?
*Edit*
Just been onto my local model shops site and
Revell seem to have the monopoly on the submarine model market
They do the VII-C in .......
1/350 ... about £9
1/144 ... about £15
1/72 ... about £55 (have been looking at this one for some time, it's a cracker ... about 36 inches long when built and there's a set of
Revell 1/72 german navy personel figures available to add to make a nice "on deck" diorama for just over £6 )