Geophone/Siesmic Motion Sensor
The geophone detects vibrations and flashes a series of LEDs that measure the intensity of the vibration. It may be useful in detecting footsteps or other vibrations that may not be noticed.
A good example of its use is in a case of an individual who believes his bed moves or shakes at night. A casual observer may not notice the bed shaking. However, the geophone would detect the movement.
Brisbane Metro Map Photo Gallery
While serving on Isabella Fowlie, ChiefPetty Officer William Alexander McHardy (147548) died (cause unknown) on 20 November 1916. On 21 October 1918, HMT Isabella Fowlie rescued the entire crew of the 2100-ton American steamer LakeBorgne (1918 – Naval Overseas Transportation Service, USA), which sank after striking a rock close to Mathieu Point near Brest (48 26′. N 04 50′.40 W); she was in convoy and transporting coal from Penzance to Roscanval in France. The ship was based at Cardiff and had been making runs from Cardiff and Belfast to French ports. The trawler was returned to its owner in 1920. Later that year, J. Graham and Sons at Hartlepool was the registered owner. The owner at the time of loss was Hartness Steam Fishing Co. Ltd, Hartlepool, Port Reg.
