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were smashed by the mass of water being blown against them.
The Royal Observatory reported:
Gap Rock is lying very near the track of the worst typhoons that have been felt in the Colony, in an exposed position, and the conformation of the sea bottom, as well as the shape of the rocks causes the sea to be much worse than in other places (Bruce; 1990, 3).
It was reported in 1984, that the Royal Observatory and the Guangdong Meteorological Bureau had signed an agreement to set up a joint venture automatic weather station on Huang Mao Zhou, about two kilometres from Gap Rock so, presumably, the weather is as interesting today as it was in the 1890s (Bruce; 1990; 3).
It is obvious that lighthouses have to withstand immense force during bad typhoons. Consequently, they are designed circular on plan so as to offer the least resistance to both wind and sea. Lighthouses are expensive to construct. Nevertheless, like the cast-iron tower at Waglan, they can be reasonably pleasing in appearance.
Before December 1952, and from 1964 onwards, weather observations on Waglan were taken by Marine Department lighthouse keepers and transmitted by radio (Hong Kong Observatory; 1999). 33 The Observatory staff started taking weather observations on Waglan in 1952 and withdrew from the Island to the meteorological station at Cape Collinson Lighthouse in 1964.
As Waglan was no longer manned after 1989, the observatory constructed an automated weather station on the Island. The old weather recording station and a small store where equipment was housed were still there when the author visited in 1999, although the latter is no longer used. But the typhoon mast, where signals used to be hoisted, has been taken down.
Water supply
Waglan has no wells or springs. Keepers depended on rainfall for their water supply. Catchment areas consisted of roofs of a clutch