The 'Heave-Ho hoist' was carried by the SAR Sea Kings until it was replaced by an electrical emergency hoist. The 'Heave-Ho' was a block and tackle affair with only a 2 to 1 ratio. The operating length was about 40ft usable. Trying to recover a single person on your own was a struggle and the co-pilot needed to be co-opted into giving a hand. Fortunately never had to use it in anger. I suggest there are far better alternatives on the market for an emergency hoist now.