The Atlantic Telegraph (1865)Russell, William Howard, Sir
History
The Atlantic Telegraph (1865)
Russell, William Howard, Sir
Transatlantic cables
Happy is the Cable-laying that has no history. Here might the day’s
record have well been closed. But it was not so to be. At 1·10 p.m.
(ship’s time), an ill-omened activity about the Testing-Room, which had
been visible for some time, reached its climax. The engines were slowed,
in five minutes the great ship was motionless. In an instant afterwards
every one was on deck, and the evil tidings flew from lip to lip.
Something was wrong with the Cable again. But the worst was not known.
“Another fault,” was the word. When I went into the Testing-Room and
found all the electricians so grave, I suspected more serious mischief
than a diminution of insulation; and so it was. They had found “dead
earth”--in other words, a complete destruction of insulation, and an
uninterrupted escape of the current into the sea. About 716 miles
(nautical) had been payed-out when the ship stopped so suddenly. Up to
2·40 o’clock, p.m. (Greenwich time), signals had been received from the
shore in regular routine. At 3 o’clock the electricians on board began
to send the current through to the shore, and in three minutes
afterwards the galvanometer indicated “dead earth.” So it was pretty
clear the injury was close to the ship, and had gone over in the
interval between 2·40 p.m. and 3·4 p.m. At 3^{h} 3´ 30´´ (Greenwich
time), the electrician on duty saw the index light of Thomson’s
galvanometer fly out of bounds whilst he was passing a current to
Valentia. The nature of the injury was so decided as to admit of no
doubt.
But in order to make assurance doubly sure two cuts were made in the
Cable, whilst the steam was being got up forward to be in readiness for
the most retrograde of all backward movements--picking-up. The whole
length of Cable in the tanks was first tested, and found to be in
admirable condition. Then a test outward gave “dead earth” not far
overboard. The next cut at the bottom of the coil in the after tank gave
the same result. The third cut was near the top of the coil in the after
tank, and confirmed the testimony of the other two tests. The usual
preparations were then made to shackle the Cable ere it was cut and
cast overboard with its tow rope of iron wire, an operation which always
caused the gravest misgivings. It was admitted that there was a certain
amount of danger in it, and more in the picking-up; but then, when the
question was asked “What would you do?” the answer was not so easy. At
first it might appear natural to back the ship, and take up the Cable
from the stern; but unfortunately ships in general will not steer stern
foremost, and the Great Eastern certainly would not. It was obvious that
if Cables could not be secured against “faults,” the mode of taking them
in would have to be amended.
Public-domain text, read in full here on John Shaqi.
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