That most CERTAINLY is not a U-boat. The U-boat is a submarine. :P
-snip-
be awesome if we could have a submarine, sadly, it would be a lot of work
ninja edit: may i suggest making the LVCP's doors more slanted, but not like a ramp?
more like a real LVCP, im not sure how to explain it, but could you work on the door being more realistic? it doesn't seem like the original model of this vehicle