The engineer operated the machinery from a position between the main engine propulsion gearboxes on the centreline of the vessel. This was generally done in the sitting down position, using a removable seat which was hung from the engine room access ladder.
The engineer oversaw the machinery from a middle point between the main propulsion gearboxes on the ship's axis. This was typically done while seated, employing a detachable stool connected to the access ladder leading into the engine room.