fog signal
Exemple din articole cu fog signal
- The Tideland package includes five two-mile fog signal stations (AB-560 AudioBeam Fog Signal and Sentry Visibility Detector) along with pairs of 5nm Lanterns (MLED-155 MaxiHALO-60 Marine LED Lantern) to mark the nominated significant .
- In 1883 an explosive fog signal was installed, which electrically detonated a small charge of guncotton every five minutes in fog.
- This fog signal and navigation light, which was built in 1948, provides warnings to shipping on Sydney Harbour.
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