From Pathfinder Lost Omens Hellfire Dispatches, which isn't enabled.

Undersurf Boat

VEHICLE 0

UNCOMMON

Price 480 gp

Space 15 feet long, 10 feet wide, 5 feet high

Crew 1 pilot, 2 rowers

Passengers 2

Piloting Check Sailing Lore (DC 20), Diplomacy (DC 22), Intimidation (DC 22), or Nature (DC 22)

AC 18; Fort +12

Hardness 10, HP 60 (BT 30); Weaknesses fire 5

Speed swim 30 feet (rowed)

Collision 3d10 (DC 20)

Submersible

This vehicle can travel below the surface of the water, usually to a depth of no deeper than 60 feet. Though enclosed, it is not watertight, so crew and passengers must hold their breath or be able to breathe underwater.

Description Resembling a large, oared kayak with closable hatches, the submersible surfboat was designed by azarketi shipwrights for use above and below the waves.

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