Amphibious search and rescue Hymn boat. The US-1 (alias SS-2A) is an amphibious rescue derivative of the SS-2 maritime patrol flying boat see 1974 edition). Featuring a retractable undercarriage. the main twinwheel members of which retract into bulged housings. the US-1 has a 1.400 ehp General Electric T58- 10 turboshaft driving a boundary-layer control compressor for the flaps. elevators and rudder.
Crew of eight comprising pilot. co-pilot. flight engineer. radar operator, navigator. radio operator. observer and rescue man. Up to five medical attendants and 36 stretcher casualties. Status: First of three US-1s ordered by the Japanese Man-lime Self-Defence Forte flown October 16. 1974. with delivery scheduled for March 1976. delivery of second and third aircraft planned for Juno and December 1975 respectively.
| Country of origin | Japan |
| Power Plant | Four 3.060 ehp Ishikawatima-Harima-built General Electric T64-IHI-10 turboprops. |
| Performance | Max speed. 311 mph (500 km/h) at 9.840 ft (3 000 m) |
| High-speed cruise. 265 mph (426 km/h) at 9,840 It (3 000 m). | |
| Long-range cruise (two engines), 202 mph (325 km/h) at 8,200 ft (2 500 m) | |
| Loiter speed. 161 mph (259 km/h) at 1.000 ft (305 m) | |
| Search endurance, 6 HGRS at 690-mile (1 110 km) range | |
| Max. search and rescue range. 3.145 mls (5060 km) | |
| Initial climb. 2.360 ft/min (12,0 m/sec): service ceiling, 28.000 ft (8 535 m) | |
| Weights | Empty equipped. 52,690 lb (23 900 kg): max take-off. 99.208 lb (45 000 kg) |
| Dimensions | Span. 107 ft 6 ½ in (32.78 m) |
| Length. 109 ft 11 in (33.50 m) | |
| Height, 32 ft 3 in (9.83 m) | |
| Wing area, 1.453.13 sit ft (135,00 m2) |
