The UH-46D Sea Knight is a twin-turbine, tandem-rotor transport helicopter used by the U.S. Navy and Marines. The HU46D carries out the following mission types: vertical replenishment (VERTREP), vertical on-board delivery (VOD), search and rescue (SAR), medical evacuation (MEDEVAC), combat support, special-weapons carriage, special warfare, combat assault, general utility, and movement of troops, ammunition, and equipment on the battlefield.

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