Need the real U-Boat Maling for your boat?
 

Well then you might find it on this site, it's German only I'm afraid, but after you've clicked on the Enter button, select Malings and you'll get to a collection of about or over 120 Malings from the U-Boats U-2 to U-182, it's not a complete collection however, but the site owner stated that he couldn't post all, so maybe you could drop him an e-mail and he can send it to you.

Edit: I forgot to say, they aren't colored, but you probably have to do some editing in any case.

Another alternative if you want to use them in SH3 is to download Evil Jester's U-Boot emblem pack. 188 scanned and then hand coloured emblems, SH3 ready (I think the same ones are also in the Grey Wolves mod).

He's also done a pack of Flotilla emblems containing another 25 more.

Got that already, just thought it'd be nice to let you know...

Yes, the site has scans that are not in Evil Jester's pack.