Alright, I think it's go time
Basically, what I had in mind:
--Opening shot---
1943, Somewhere in the Atlantic. Camera sweeps over the water. All is calm.
Cut to a shot of a periscope coming out of the water. Cut to a clip from Das Boot with the skipper looking through the periscope.
Shot of the pov of the periscope. It swings around until it spots something on the horizon.
Shot of a C2 freighter as it chugs merrily along, blissfully unaware of it's impending doom.
Cut to the crew preparing for a shot, Das boot again. Shot of the torpedo doors opening. they fire off a torpedo (LOS!) Shot of the torp tearing out of the tube.
Shot of the skipper holding a stop watch. Shot of the torp screaming towards the C2. Shot of the C2, nothing all is quiet...then...BOOM! Geyser of water, BOOM boilers go up, smoke everywhere.
Shot of the periscopes POV, as the C2 goes down.
Cut to a shot underwater as the C2 goes plowing to the bottom of the ocean. Flash up the title SH3: GWX
---Possible alternate/extended version in this version the title doesn't come up yet.---
Cut to the periscopes POV. It does another sweep and spots something coming at them...fast...
Shot of a DD bearing straight for the Uboat.
ALARM!!! Crew rush through the boat to the front. Shot of the props spinning faster and faster, as they dive.
The DD barrels over them and unleashes it's Depthcharges. Cut of the crew looking up around, quiet as death (Das boot...again...)
Shot of the Uboat with DCs dropping around them. One enters the top of the frame and looks like it'll land right on top of it...
Black out.
Title comes up.
End.