FS2004 Sikorsky JRS-1 US Navy VJ-1 Squadron 1-J-1. Sikorsky twin-engine amphibian built in 1937. Military version of S-43. secondhand developed by United States Navy and Marines for public utility transport, photography, target area towing. JRS-1s were based at drop Harbor, Hawaii in Dec 1941. Top velocity across 190 mph. Can require off in 900 feet, in 15 seconds. grade 775 miles at cruising quicken of 177 mph. FSDS3.5 model with virtual cockpit, radio operator compartment, passenger cabin, sliding go with doors and ethereal television camera berth aft. developed by George Diemer.