Changes

The ''heliport'', also known as the helipad, is a large deck area that is placed high and to the side of offshore rigs. It is an important feature since helicopters are often the primary means of transportation. The ''living quarters'' usually comprise bedrooms, a dining hall, a recreation room, office space, and an infirmary. Escape boats are usually located near the living quarters.

The ''heliport'', also known as the helipad, is a large deck area that is placed high and to the side of offshore rigs. It is an important feature since helicopters are often the primary means of transportation. The ''living quarters'' usually comprise bedrooms, a dining hall, a recreation room, office space, and an infirmary. Escape boats are usually located near the living quarters.

''Cranes'' are used to move equipment and material from work boats onto the rig and to shift the loads around on the rig. Most rigs have more than one crane to ensure that all areas are accessible. A ''riser'' is used to extend the wellhead from the mudline to the surface. On [[platform]]s and [[jackup rig]]s, the [[blowout preventer]]s (BOPs) are mounted above sea level. On [[floater]]s, the BOPs are mounted on the seafloor.

''Cranes'' are used to move equipment and material from work boats onto the rig and to shift the loads around on the rig. Most rigs have more than one crane to ensure that all areas are accessible. A ''riser'' is used to extend the wellhead from the mudline to the surface. On [[Offshore rigs#platforms|platforms]] and [[Offshore rigs#jackup rigs|jackup rigs]], the [[Offshore rigs#blowout preventers|blowout preventers]] (BOPs) are mounted above sea level. On [[Offshore rigs#floaters|floaters]], the BOPs are mounted on the seafloor.

==Types of offshore rigs==

==Types of offshore rigs==