Capital required $13,000,000 $19,300,000 Passenger rate: London-New York $240 $575 Rate per passenger: Mile 8 cents 18 cents Mails per ounce: London-New York 6-1/4 cents 15-1/2 cents These figures for an airship service are based on detailed calculations, of which the more important are: _Capital Charges_: Four airships of 3,500,000 cu. ft. capacity, at $2,000,000 each $8,000,000 Two double airship sheds at $1,500,000 each 3,000,000 Land for two sheds and aërodromes at $150,000 each 300,000 Workshops, gas plants, and equipment 750,000 Working capital, including spare parts, stores, etc. 850,000 Wireless equipment 50,000 Miscellaneous accessories 50,000 ----------- Total capital required $13,000,000 ----------- Annual charge, interest at 10% $1,300,000 _Depreciation and Insurance_: Airships. Useful life, about 3 years. Obsolete value, about $100,000 per ship. Total depreciation per ship, $1,900,000 in three years. Average total depreciation per annum for four ships for 3 years, $2,535,000. Airship sheds. Total annual charge $90,000 Workshops and plant. Depreciation at 5% per annum 17,500 Total annual charge for depreciation 2,650,000 Total annual insurance charges on airships and plant 617,500 _Annual Establishment Expenses_: Salaries of Officers and Crews-- 4 airship commanders $20,000 8 airship officers 30,000 Total number crew hands (64) 80,000 $130,000 ------------------ $130,000 Salaries of Establishment-- Management and Staff $25,000 Workshop hands, storekeepers, etc. (50 at each shed--total 100) 100,000 $125,000 ------------------ Total annual establishment expenses $255,000 _Repairs and Maintenance_: Sheds and plant, annual charge, say, $25,000