Sea Cavalry (SD-40), developed by Han's Eagle, is industrial gas-electric hybrid VTOL fixed-wing UAV specialized for maritime business. It has the ability of long-distance and high-speed cruise. With the ability of high-precision VTOL on moving board, SD-40 and patrol ship can form a part of the land-sea-air three-dimensional integrated dynamic regulatory net. ^ The key system redundancy design makes safety performance high; ► Thedesignoffourarmsandeight rotors leads to strong ability of wind-resistance; ► Three-fuselage layout makes landing on the sea come true; ► Theencloseddesignleads to ability of water-proof and salt spray proofing; ► Huge payload bay meets the requirement of sea rescue; ► Huge battery-cabin supports hovering-monitor mission; ► Alternator power the aircraft in a long-time mission; ► Over-the-horizon patrol causes wide range of investigation. ► Wingspan ► Length ► MTOW ► Cruising Speed ► MaxAirspeed ► VTOL Sea-situation y Operation Altitude y Ceiling ► Max Take-off Altitude ► Max Payload ► Endurance Payload Double-light EO, Communication relay equipment, Airborne digital SLR cameras, Mini-SAR(synthetic aperture radar), Mini laser-radar, etc. • Maritime Patrol: law enforcement and investigating-searching for evidence by maritime patrols, ship oil spill and sewage surveillance, the convoy of merchant ships by air monitoring, air AIS monitoring, etc. • Navigation Supporting: VHF aerial relay, regular inspection of navigation aids, channel survey, etc. • Emergency Rescue: sea search and location, delivery of relief sup plies,act as rescue flotation device • Other Applications: express of island's mail, deliver supplies to lighthouse regularly, the monitoring of atmospheric environment at sea, etc.