A good site on airships
http://airship-research-lab.com/
General characteristics
Crew: 40
Capacity: 20 passengers
Length: 236.53 m (776 ft 0 in)
Diameter: 30.48 m (100 ft 0 in)
Volume: 105,000 m3 (3,707,550 ft3)
Useful lift: 60,000 kg (132,000 lb)
Powerplant: 5 × Maybach engines, 410 kW (550 hp) each
Performance
Maximum speed: 128 km/h (80 mph)