North Sea Airships - Specifications
 
Envelope capacity...................................................... 360,000 cubic feet  
Ballonets................................................................... Ballonets (six) capacity 128,000 cubic feet  
Length...................................................................... 260 feet  
Diameter................................................................... 57 feet  
Height....................................................................... 69 feet  
Plane area (each)....................................................... 110 square feet  
Car........................................................................... 33 feet  
Engines.................................................................... At first two 250 hp Rolls Royce Later two 240 hp Fiat  
Propeller Four-bladed.................................................
9 feet diameter  
Petrol tanks............................................................... (four) capacity 340 gallons total  
Service Petrol tanks................................................... (two) capacity 60 gallons  
Water ballast............................................................. capacity 40 gallons  
Gross lift................................................................... 10.85 tons  
Disposable lift ........................................................... 3.8 tons  
Endurance ................................................................ 24 hours  
Top speed................................................................. 57 mph  
Climb........................................................................ 1,000 feet per minute 19 seconds  
Turning circle............................................................. 40 seconds minimum,  
Ceiling...................................................................... 9,500 feet