Helicopter deck

This was depicted in the 1990 film The Hunt for Red October, when Jack Ryan is flown out to a submarine by helicopter.

Ryan is lowered to the submarine, but brushes the officer charged with trying to hook him who receives a minor injury.

Coaxial rotor helicopters in flight are highly resistant to side-winds, which makes them suitable for shipboard use, even without a rope-pulley landing system.

Marine and offshore helicopter decks on board offshore oil platforms and ships are typically regulated by the rules defined within CAP 437, which defines standards for the design, marking, and lighting of marine/offshore helicopter decks, and is produced by the Civil Aviation Authority.

The largest marine helicopter decks will accommodate the Boeing CH-47 Chinook, which requires a D value of 30 metres (98 ft), and has a weight of 21.3 tons.