Back Emergency works well for slowing to fire a moss against a persistent torpedo or re-acquiring an enemy position to get a shot off at him. The way I figure it they already know where you are. Back Emergency isn't giving away anything. Next video tomorrow I will use this in battle.
I shot a Tigerish that an enemy Warship evaded by making full circles over and over with the torp about 15meters off his tail. Nothing I've ever seen before
Well worth watching for a laugh.