80-G-14301 Mousetrap
The Mk 20 Mousetrap anti-submarine rocket system is both loaded/ready to fire and stowed on a similarly sized PC. The projectiles were 7.2 inches in diameter and weighed 65 pounds with an explosive charge of 31 pounds. Unlike the Hedgehog weapon, the Navy classified the projectile as a rocket, as it utilized propellant that burned for 0.2 to 0.7 seconds.