1) Compartment 2) Wheelhouse 1) Helm 2) Wheelhouse 
A pilothouse or pilot-house is a glass-enclosed room from which a ship is controlled by the ship`s pilot. The pilothouse also is known as the wheelhouse. It usually is located on top of the largest deck (the texas deck) or highest deck. The steering wheel or helm, compass, engine order telegraph, and chart table are located here. On many ships, e....
a small cabin on the deck of the ship that protects the steering wheel and the crewman steering.
[n] - an enclosed compartment from which a vessel can be navigated
wheelhouse noun an enclosed compartment from which a vessel can be navigated