Amazing WWII naval combat footage

[Oberon]

Originally Posted by Stealhead

If you look at the related vids it seems that they can "sink" somehow not sure how it knows its hit or do they use the "honor" code and push a sink button?

IIRC what usually happens is there is a section of the side which is made out of a material like plastic or some such which can take damage from the 'shells'. When enough damage happens then: