86O RUDDER CONTROL ROOM. This room is locked and can be opened by the key in Room 86I. Metal machine takes up the aft wall. A conspicuous heptagonal hole is here that perfectly fits the heptagon shaped emerald in Captain Bonebeard's left eye socket. If the emerald is placed in the hole, the ship will rise to the surface and can be steered around the salt mere by the helm at 87A. It drives like power steering and pushing forward on the helm increases speed (up to a movement rate of 24”) and pulling back slows and stops. The fact that much of the back of the ship is missing does nothing to hinder the ship's motility.