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The Diaphone is still in its experimental stage and was used as a supplementary fog signal and sounded one hundred and twenty-two hours, fifteen minutes (122 hrs. 15 min.) and engines consumed one hundred and eighty-two (182) gallons of kerosene.
On three (3) occasions the fortnightly relief was delayed by bad weather.
GREEN ISLAND LIGHTHOUSE AND SIGNAL STATION.
During the year 1923, one thousand nine hundred and seventy-seven (1,977) vessels were signalled and reported.
In addition two hundred and fifty-three (253) messages were sent and twenty-six (26) were received.
Owing to telephone interruptions at three different times during the year, one hundred and twelve (112) vessels were not reported.
The number of Aga lights (including Green Island) is now fifteen (15).
It was found necessary to renew the burner at Signal Hill lighthouse, also refit Ma-wan Light, the remainder have been burning continuously, accurately, and satisfactorily throughout the year.
KAP SING LIGHTHOUSE,
This station has been regularly inspected and has worked satisfactorily during the year.
SIGNAL STATIONS.
The Peak Signal Station reported three thousand and fifty-eight (3,058) ships during the year, and the Gun signal denoting the arrival of Mail steamers was fired ninety times. From the 18th August to the 6th September, no reports were sent owing to telephone interruptions.
Signal Hill Station reported four thousand eight hundred and fifty (4,850) ships as entering and one thousand four hundred and ninety-nine (1,499) vessels as leaving the harbour.
Two hundred and nine (209) Typhoon signals and six (6) gale signals were hoisted during the year.