シードラゴン
The MH-53E Sea Dragon is also a capable heavy-lift asset, with three powerful turboshaft engines and a maximum take-off weight of . This gives the Sea Dragon the capability to carry an impressive amount of cargo, personnel or equipment over long distances. The Sea Dragon remains in service as the Navy's only heavy-lift helicopter and only proven mine countermeasure platform. While programmed to replace the USMC's CH-53E and not the Navy's MH-53E, the new Sikorsky CH-53K King Stallion, intended to start flying its evaluations in 2015, has an increased MTOW figure of some 84,700 lb (38,400 kg), some 14,950 lb (6,781 kg) heavier than the Sea Dragon.