Winch based systems
The proven in concept 3 or 4 winch system uses wire-ropes running via sheaves to strong points of the helicopter. Dependent on different parameters a 3 or 4 winch solution may be chosen. A winch-and-cable system is very cost-effective and can be used for various small- or medium-sized helicopter types. Generally, on existing ships, only minor modifications to the ship are required to install this system.
Peter de Kiewit