Undersea assault (A.K.A Submarine mission)

Today we've got an unique situation. Insurgent Enginneers are starting to make submarines and are doing a test run today with a small one hanging only a few meters under the surface, with a small crew and enough supplies for a short trip. If this test is sucsessful then they will likely begin constructing larger ships with larger crew and cargo campacity. Due to the tight enviroment you are likely to be discovered within seconds of boarding, so be ready for a fight. There isn't a large crew and they are likely not heavily armed to not punch through the outer hull, but the cramped space could prove a challenge. Our armorers have supplied you with special made rounds and explosives to not sink yourself in the shooting, just dont plant them directly on walls. Good luck team. ============ TL:DR Kill dudes in a submarine