10. Every 50 nauts. of Cable payed-out will be signalled at the same time (viz., at the 50 mins.), thus, instead of 5 reversals of 2 minutes, 10 reversals of 1 minute will be made commencing Z to E.
11. Every 50 nauts. distance run will be signalled to the shore; the signal will be 2 reversals (commencing Z to E), each 2 minutes’ duration—2 reversals, each 1 minute’s duration, and 2 reversals, each 2 minutes’ duration.
12. Should any defect in signals be perceived, or bad time kept, notice will be given to the shore by signalling at the 50 minutes—thus, by giving 2 reversals of 5 minutes’ duration, commencing Z to E.
13. In sounding, signal will be one current of 10 minutes’ duration, Z to E.
14. Land-in-sight signal will be likewise one current of 10 minutes’ duration, Z to E.
15. Greenwich time will be kept, but a column will be devoted in journals and sheets to ship’s time.
16. After the insulation test is taken, it is to be worked out thus—The same deflection at the 15th minute’s reading will be obtained with the same battery through resistance, and a shunt to the galvanometer. The amount of resistance multiplied by multiplying power of the shunt, and galvanometer multiplied by the length of the Cable, will give the G. p. R. pr. nt.
17. The copper resistance of the Cable will be taken after 5 minutes’ electrification.
18. No change in the instruments, wires, or connections (other than the batteries, if necessary), to be made on any account, unless such instruments, &c., become defective—any necessary change to be made as quickly as possible.
19. Should the rolling of the ship generate a magnetic current of sufficient strength to embarrass the signals, a stronger current for the signals will be put on on shore, and a shunt used with the galvanometer on board, notice to the shore to put on more power will be given by one current of 5 minutes, commencing Z to E, and 5 reversals of 1 minute’s duration.