Are the “prop fouler” and the “can opener” designed to sink ships?
No. The “prop fouler” is intended to entangle around and disable another ship’s propeller. As for the “can opener”, given its appearance (a hunk of steel hydraulically extended from the Farley Mowat’s starboard side), it suggests the worst possible intentions but is positioned to rip a hole in the hull of a ship above the water line and fuel tanks again, disabling but not sinking.
