Video animation to show the sound signals made by a vessel over 100m aground in restricted visibility (fog). The signal is 3 distinct strokes on the bell, followed by a rapid ringing on the bell for about five seconds, followed by 3 more strokes; all followed by rapidly striking a gong for about five seconds. The bell is located in the forepart of the vessel, the gong aft. Also shown are the relevant lights and day shapes.
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