Right you are Gilligan,

The picture shows the vessel after most of the damaged skin was
removed. Most the compartment you see open to the air are forward of
the collision bulkhead. Infact you can see the collision bulkhead in
the picture. What was lost seems to be ballast tanks, torpedo tubes
equipment spaces ect.

Thats why a collision bulkhead is of extreme importance on a ocean
going vessel. Take RedCloud for instance, she has 5 foot of bow that
could be smashed in and still sail along without taking on any water.
Then 3 other seperate water tight compartments.

Also I think the sub hit a mound or ledge not a speed bump as some
call it, unless they were flying sideways. Almost looks like they
rammed a ship off the port quarter. I wonder if the story we hear is
just a cover-up?

Thanks for the link.

Joe