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