We were doing an exercise with scare charges (1/4 stick of dynamite) to simulate explosions.

Well, one of the trainers didn't throw it far enough from the ship and rattled the ship enough to have a vavle leave a high pressure bottle and a break a few other minor things in the immediate area. No hull breach though.

A real cope hull needs to create a bubble curtain around the ship (in addition to the metal cage). Bubble curtains greatly help to attenuate shockwaves in water.

Welcom back torpedo nets.

What about massive baggies of Nickelodeon Gak strapped to the hull to slow the torpedos down?

So, everyone here aware that modern torpedos create air bubbles under the ship to break the keel.