Steam-navigation -- History; Steamboat lines -- History; Steamboats -- History
The BRITANNIC when she first came out was fitted with a novelty in
the shape of a “lifting propeller.” This propeller was a patent of
the late Sir Edward Harland, senior partner of the firm by whom the
BRITANNIC was built. In long ships the pitching in a heavy sea, and
the vertical motion of the waves, tend to expose the upper portion
of the propeller, the evil effects arising from this being the
“racing” of the engines and its attendant dangers, together with a
diminished speed. Sir Edward Harland believed that a propeller which
could be worked at any depth, and which did not require the stoppage
of the vessel whilst it was being raised or lowered, would reduce
these risks to a minimum, if it did not entirely remove them. In
actual practice, however, it was found that the advantages of the
new principle did not compensate for its disadvantages, and, after a
fair trial had been given to it, it was abandoned in favour of the
old style of screw. In a letter, dated 3rd December, 1874, addressed
to the late Mr. W. S. Lindsay, Messrs. Ismay, Imrie & Co. state:—“The
average speed of the BRITANNIC is fifteen knots per hour on a
consumption of 75 to 80 tons of coal per day, and her approximate
cost, built without contract, is £200,000.”
From 1873 until 1884 the White Star Line maintained its position as
the fastest fleet on the Atlantic, a result to which the BRITANNIC
and GERMANIC contributed in no small degree. In September, 1890, the
BRITANNIC eclipsed her own previous record of 7 days 9½ hours, by
crossing from New York to Queenstown in 7 days 6 hours 55 minutes,
at an average speed of 16·80 knots. The following year (September,
1891) she surpassed even this rapid passage, by making the run from
New York to Queenstown in 7 days 6 hours 52 minutes. While employed
by H.M. Government to convey troops during the late war in South
Africa, she made the run from Queenstown to the Cape in 19 days, a
speed surpassed by few of the transports engaged. In August, 1891,
the GERMANIC following in the track of her sister ship, travelled
from New York to Queenstown in 7 days 7 hours 37 minutes, at an
average speed of 16·10 knots per hour. When it is remembered that
this high speed (nearly nineteen statute miles per hour) was attained
by vessels over 20 years old, with their original compound engines
and boilers, it will be acknowledged that, having regard to their
small coal consumption and large carrying capacity, the BRITANNIC and
GERMANIC have given results unattainable with the fastest ships of
the present day.
The GERMANIC in 1895 received new engines and boilers, and had her
passenger quarters entirely remodelled on the plan of the MAJESTIC
and TEUTONIC. In July of that year she crossed from Queenstown
to New York in 6 days 23 hours 45 minutes, and in August of the
year following in 6 days 21 hours and 38 minutes, thus showing a
substantial increase of speed.
Public-domain text, read in full here on John Shaqi.
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