The diving tank is a crafting material in How to Survive: Storm Warning.
Description[]
Diving tanks are used in the crafting of handmade firearms as well as the flamethrower. Alternatively to a manual compressor, when a diving tank is used in the creation of handmade gun, it will create guns with higher fire rates, like the sten gun.
Location[]
The first diving tank is acquired when Kovac gives the quest (enter name of quest); the second in his quest chain. After completing the quest, returning the fast shotgun to Kovac and continuing the game, diving tanks are found strewn about the archipelago.
Crafting[]
Diving tank + harpoon grip = unfinished fast weapon (used in fast shotgun, sten gun, (insert machine gun link).
Diving tank + unfinished gas weapon part 1 = Unfinished gas weapon part 2 (flamethrower crafting)