| | | |
18| 1405| 2605| 2. 8| 650| 69| | | | | |
19| 1652| 2852| | | | | | | | |
20| 1927| 3127| | | | | | | | |
-----+-----+-----+-----+----+----+-----+----+----+-----+----+----

I will close this long chapter, in which I have endeavored to give a
clear, comprehensible, and faithful idea of the cost of running ocean
mail, freight, and passenger steamers, by an extract from that very
able and faithful work, "Steamship Capability." As a summing up of the
various laws and facts concerning the consumption of fuel, weight and
power of engines, speed of ships, and their capacity to do business,
Mr. Atherton says, page 55: "Now suppose, for example, that the
passage be 1,000 miles, and that, for brevity, we confine our remarks
to the engine department only; which, indeed, will be the department
of expense, chiefly affected by variations in the rate of speed. It
appears that the vessel of 5,000 tons' mean displacement, if fitted
to run at the speed of EIGHT NAUTICAL MILES per hour, will require 172
H.P., and a cargo of 2,738 tons will be conveyed 1,000 miles in five
days five hours; being equivalent to one day's employment of 33/100
H.P. _per ton_ of goods.

"If fitted to run at TEN NAUTICAL MILES an hour, the vessel will
require 336 H.P., the cargo will be reduced to 2,524 tons, and the
time to four days four hours; being equivalent to one day's employment
of 55/100 H.P. _per ton_ of goods nearly.

"If fitted to run at TWELVE NAUTICAL MILES an hour, the vessel will
require 581 H.P., the cargo will be reduced to 2,217 tons, and the
time to three days eleven hours; being equivalent to one day's
employment of 91/100 H.P. _per ton_ of goods.

"If fitted to run at FOURTEEN MILES an hour, the vessel will require
923 H.P., the cargo will be reduced to 1,802 tons, and the time to two
days twenty-three hours; being equivalent to one day's employment of
1-52/100 H.P. _per ton_ of goods.

"If fitted to run at SIXTEEN MILES per hour, the vessel will require
1,377 H.P., the cargo will be reduced to 1,264 tons, and the time to
two days fourteen hours; being equivalent to one day's employment of
2-86/100 H.P. _per ton_ of goods.

"If fitted to run at EIGHTEEN MILES per hour, the vessel will require
1,961 H.P., the cargo will be reduced to 585 tons, and the time to two
days eight hours; being equivalent to one day's employment of 7-75/100