When 1SQ is ordered by the skipper whether in actual launch proceedings or in drill, the boat goes to a state of physical readiness in relation to its attitude with the sea around it. Kind of like setting up for a low level gun run only different. This is its depth, speed, pitch etc. When the order is given to set 1SQ the ships firing computers take over those calculations automatically from the guys driving the boat manually. The computers adjust between ordered speed, depth, etc and what is actual speed, depth etc and sets them for launch.

MAN YOUR BATTLE STATIONS ANONS!

BOOMS INCOMING!