The CH-46 Sea Knight tandem rotor helicopter is used by the U.S. Navy and Marine Corps and other nations including Canada, Sweden, Japan, and Saudi Arabia. It has been serving customers around the world for more than 40 years. It has a straighter, more-compact fuselage than the Army Chinook, and can take off from water or land. Its U.S. Navy missions include vertical replenishment, vertical on-board delivery, search and rescue, medical evacuation, combat support, special warfare and general utility. The Marine Corps mission for the CH-46E includes combat assault, SAR, medevac, and movement of troops, ammunition, supplies and equipment on the battlefield. A commercial version of the Sea Knight, the Model 107, flew for New York Airways during the early 1960s.

The U.S. Marine Corps retired the CH-46 Sea Knight in August 2015.