The cable ship Great Eastern hove to in mid Atlantic with paddle boxes and screw astern, the paying out gear on her after deck leading the cable over grooved sheaves past a dynamometer wheel.
What it was used for
A cable ship in the Atlantic, chartered by the Telegraph Construction and Maintenance Company. She had been built as a passenger steamer and failed as one; the telegraph museum PK Porthcurno records that when she was put up for sale at half her material cost there were no takers, until Daniel Gooch and his group bought her for 25,000 pounds. Paying out began off Valentia on 23 July 1865; on 2 August the cable parted after 1,212 miles had gone overboard (so engineer Canning's report; Bright: 1,186). In 1866 she sailed on 13 July and came into Heart's Content on 27 July, then grappled up the 1865 end and completed that line too: 1,896 miles long at an average depth of 1,900 fathoms. Bright and Field both put the successful cast of the grapnel at the thirtieth attempt.
What was new
One ship carried the whole cable. In 1857 and 1858 the load had been split between Niagara and Agamemnon, in 1858 spliced in mid-ocean; Charles Bright wrote in 1903 that this time it was determined the cable be laid "in one length, with the exception of the shore ends, by a single vessel". The barb hangs on the same hull: the ship whose size ruined her as a liner found, in Bright's words, her first useful work in cable laying, and afterwards ended as a showboat, concert hall and gymnasium and as a floating advertising hoarding on the Mersey before being broken up in 1889-90.
Connections
Every connection names its kind. “Forerunner” on its own would be a claim.