直升机能对海战和海上军事活动中可能出现的海、空落水人员实施快速搜索、营救和后送,也能对交通不便的海岛、边远地区部队发生的危重伤病员实施快速转送和救治,尤其战时它是迅速安全舒适的伤员后送工具。国外直升机已被广泛用于执行海上或陆上遇难人员的搜索、营救和医疗后送,其设备和方法也在不断地发展和完善。近年来我国在平战时也曾用 Helicopters can quickly search, rescue and evacuate sea and airborne personnel who may appear in naval battles and maritime military activities. They can also rapidly transfer and treat critically ill patients in islands and remote areas where traffic is difficult, especially It is a quick safe and comfortable casualty evacuation tool in times of war. Foreign helicopters have been widely used in the search, rescue and medical evacuation of persons who are killed at sea or on land, and their equipment and methods are constantly being developed and improved. In recent years, China also used it in peacetime