Supermarine S.4 - Specifications

Specifications

Data from Supermarine Aircraft since 1914

General characteristics

• Crew: 1
• Length: 26 ft 7¾ in (8.12 m)
• Wingspan: 30 ft 7½ in (9.33 m)
• Height: 11 ft 8½ in (3.57 m)
• Wing area: 139 ft² (12.9 m²)
• Empty weight: 2,600 lb (1,179 kg)
• Loaded weight: 3,191 lb (1,447 kg)
• Powerplant: 1 × Napier Lion VII 12-cylinder water cooled W-block engine, 680 hp (507 kW)

Performance

• Maximum speed: 239 mph (208 kn, 385 km/h)
• Wing loading: 23.0 lb/ft² (112 kg/m²)
• Power/mass: 0.21 hp/lb (0.35 kW/kg)