WWI U-Boat (5e Equipment)

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Speed: Swim 160 feet per round (15 mph); acceleration 20 feet per round (2 mph); Ascend/descend 20 feet per round; maximum depth 165 feet. The U-boat expends 2 feet of movement for every 1 foot it travels underwater.

A military submarine operated by Germany in the Great War, used to enforce naval blockades and raid enemy merchant ships. It is 188 feet in length, 20 feet in width, and 23 feet tall. Its primary weaponry are four torpedo tubes, two each on the bow and the stern, and it is also equipped with a naval gun for destroying smaller targets and enemy aircraft. It can travel up to 2,100 miles on the surface, or half the distance underwater, with engines full of gas used in conjunction with electric motors.


Size. Colossal
AC. 20
Hit Points. 800
Damage Threshold 25
Crew and Passengers. 1 driver; 1 commander; 1 gunner; 8 loaders; 28 passengers

Naval Gun: Ranged Weapon Attack: +8 to hit, range 1,000/3,000 ft., one target. Hit: 35 (10d6) piercing damage. The naval gun has the burst fire and reload (100 shots) properties, and it deals double damage against objects and structures.

Self-Propelled Torpedo: Ranged Weapon Attack: +8 to hit, range 2 miles., one target. Hit: 55 (10d10) piercing damage and 55 (10d10) fire damage. A self-propelled torpedo deals double damage against objects and structures. Two creatures must use an action to load a self-propelled torpedo before it can be fired again. A U-boat is typically equipped with six torpedos.

Naval Mines: The U-boat lays a cluster of naval mines which fill a 40-foot cube centered around it. The mines are visible from the surface with a successful DC 18 Wisdom (Perception) check. A Large or larger creature or vehicle which swims through the area containing mines must make a DC 15 Dexterity saving throw, taking 35 (10d6) bludgeoning damage and 35 (10d6) fire damage on a failed save, or half as much damage on a successful one. A U-boat is typically equipped with 12 mines, all of which are expended once it performs this action. The mines deal double damage against objects and structures.

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