Talk:Vortex Torpedo/@comment-87.179.95.221-20160827155859/@comment-444327-20160927012926

In the Seamoth, modules come in two forms; passive and active.

Passive modules are always in effect (Pressure compensator, Power efficiency, Solar charger etc.) and are green on the hotbar.

Active modules are usable with left click and have to be active to use them (Sonar, Perimeter Defense System etc). You have to manually switch them on with 1, 2, 3 or 4 depending on where it is on the hotbar. They're grey when inactive and blue when active, and you can only have one active at a time.

PRAWN suit can have two actives (arm slots) and 4 passives.

I've not used them myself, but I would imagine the Torpedo attachments for the Seamoth are Active modules and have to be both installed onto the Seamoth and active to function.