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Wadjemup Hill - The Fog Signal
With the presence of bush fire smoke and smog, visibility was made difficult for incoming ships to see the signals from Wadjemup Hill-Signal Ridge.
A fog signal was installed on the hill around 1899, which consisted of a cabin at the base of the 12 metre mast, where a signalman would hoist up a 225 gram powder charge. It would detonate with electricity upon reaching the top of the mast.
The resulting sound could be heard by the ships, alerting them they were approaching land. It could be heard from as far as Fremantle, with the charge being set off every seven or 15 minutes.
These type of fog signals were used at many lighthouses around the world, in particularly Ireland, with a "double tonight explosion every five minutes".
By 1949, the fog signal was no longer used as a result of improved signal methodology.
Remains of a ladder that once allowed the signalman to climb up to the top of the mast
The old hook eye turnbuckles and guy ropes that kept the mast up in the strongest of storms
Wadjemup Hill - Flag Pole Ladder
This steel rope ladder is believed to have been used to attach the flags required for signalling to incoming ships.
