CH-46 Sea Knight

The Boeing Vertol CH-46 Sea Knight was a tandem-rotor medium transport helicopter widely associated with U.S. Marine Corps assault support. Its role was moving personnel, cargo, and equipment in expeditionary settings, especially between ship and shore. The aircraft became so familiar to Marine aviation that its nickname, Phrog, remained part of its service identity through retirement.

The Sea Knight's tandem-rotor layout gave it useful lift and loading characteristics while avoiding tail-rotor clearance problems. A rear ramp allowed practical movement of troops, stretchers, and cargo. Its medium size made it suitable for amphibious ships, but age, payload limits, and maintainability eventually drove replacement by newer tiltrotor and helicopter systems.

In service, the CH-46 handled troop lift, resupply, casualty evacuation, and support missions for Marine and Navy users. NAVAIR's retirement coverage reflects how long the aircraft stayed useful after its original production era. Its legacy is as an expeditionary workhorse: not glamorous, but essential for moving forces and supplies where ground movement was slow or impossible.