arestier gives no dimensions.
However, he comments that, in American steamers, the space for steam
in the boilers varied from 6 to 12 times the capacity of the cylinder.
He gives the _Savannah's_ boiler pressure as 2 to 5 pounds per square
inch and the maximum revolution of the wheels as 16 revolutions per
minute. The boilers could burn coal or wood. Judging by Marestier's
sketch of the ship, the stack was at the firebox end; the boiler or
boilers were underneath the engine.

The log of the _Savannah_ gives little useful technical information
other than that the ship readily made 9 to 10 knots under sail in
fresh winds, showing she could sail well. Under steam alone the log
credits the ship with a speed of 6 knots; Marestier estimated her
speed at 5-1/4 knots in smooth water. The log shows that she usually
furled her sails when steaming, though on a few occasions she used
both steam and sail. In her crossing from Savannah to Liverpool she
appears to have been under steam for a little less than 90 hours in a
period of about 18 days (out of the total of 29 days and 11 hours
required to cross). There is no evidence of any intent to make the
whole passage under steam alone, for the vessel was intended to be an
auxiliary, with sails the chief propulsion.

Captain Collins states in his notes that the ship was built by Francis
Fickett as a Havre packet, that she stowed 75 tons of coal and 25
cords of wood, and cost $50,000. Apparently quoting Preble[10] to a
great extent, he also states that the engine developed 90 horsepower
and had a 40-inch diameter cylinder with a stroke of 5 feet.

Preble states that the ship was purchased for conversion to a steamer
after launching and gives statements by Stevens Rogers, sailing master
of the _Savannah_, to the effect that the ship was built as a Havre
packet and that the project ruined financially one of the investors,
William Scarborough. Rogers, who made these statements in 1856, also
said the ship was built by "Crocker and Fickett." Contemporary
newspapers, quoted by Preble, state that the ship had 32 berths in
staterooms for passengers.

Morrison[11] credits the building of the _Savannah_ to Francis Fickett
and says she was intended for the Havre packet run. He states that the
vessel cost $50,000; that her paddle wheels, each with eight buckets,
were 16 feet in diameter; and that she had canvas wheel boxes
supported by an iron frame. Morrison also relates the history of the
shi