This hut was hut where the submarine telegraph cables that landed at Deep Water Bay were connected to the cables that ran across Hong Kong island.
The hut was built for the Great Northern China and Japan Extension Telegraphic Company. They landed Hong Kong's first international telegraph cable here at Deep Water Bay in 1871. It connected Hong Kong and Shanghai initially, but a few months later the connection to the trans-Siberian cable was complete, and telegrams could be sent via this line to and from London.
115. Telegraph Cable to Gap Rock.—Providing telegraphic communication between the City of Victoria and the Gap Rock Lighthouse involved the construction of 5.25 statute miles of land line, and the laying of 29.80 nautical miles of cable.
116. The land line constructed of galvanized iron wire No. 7. B.W.G. commencing at the Post Office is carried on iron poles along Pedder Street, the Praya, Zetland Street and Albert Road to the High-Level Tramway, then across Crown land on the west of the Tramway to Bowen Road, along the Bowen and Stanley Roads to Little Hongkong, and hence across Crown land to the Eastern Extension Telegraph Cable House at Deep Water Bay.
Does any part of the old cable hut still remain?
Here's a c.1920s view of the hut, showing it with a pitched roof:
Today, Deep Water Bay is still a landing site for international communications cables, though they now land in the northeast corner of the bay, near to the stream. So there's no longer any need for a cable hut on the golf course's land, but there is still a small building roughly where the old cable hut used to be. It's marked "store" on the modern government maps.
The building can be seen from the road, and one obvious change is that the present building has a flat roof. Is it the original building that has been re-roofed, or a modern building built on the same site? We'd get a better idea if we could see what the building is made of: a concrete hut is definitely modern, but if it was built from stone it could be closing in on its 150th birthday!