https://en.wikipedia.org/wiki/Dornier_Do_X

General characteristics

• Crew: 10-14
• Capacity: 66-100 passengers
• Length: 40.05 m (131 ft 5 in)
• Wingspan: 47.8 m (156 ft 10 in)
• Lower wingspan: 10 m (32 ft 10 in) (sponsons)
• Width: 4.8 m (15 ft 9 in) maximum hull beam
• Height: 10.25 m (33 ft 8 in)
• Wing area: 486.2 m² (5,233 sq ft)
• Empty weight: 28,000 kg (61,729 lb)
• Gross weight: 49,000 kg (108,027 lb)
• Fuel capacity: 16,000 l (4,200 US gal; 3,500 imp gal) in 8 tanks in hull and wings + optional 8,600 l (2,300 US gal; 1,900 imp gal)
  
• Oil capacity: 3,600 l (950 US gal; 790 imp gal) in six nacelle tanks with 1,300 l (340 US gal; 290 imp gal) in a hull tank for in-flight replenishment
• Powerplant: 12 × Siemens Jupiter 9-cylinder air-cooled radial piston engines, 391 kW (525 hp) each
• Propellers: 4-bladed fixed-pitch wooden propellers

Performance

• Maximum speed: 242 km/h (150 mph; 131 kn)
• Cruise speed: 170 km/h (106 mph; 92 kn)
• Range: 1,700 km (1,056 mi; 918 nmi)
• Service ceiling: 3,200 m (10,500 ft)
• Wing loading: 105 kg/m² (22 lb/sq ft)
• Power/mass: 17.2 lb/hp (10.5 kg/kW)