17/2017
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EAST COAST OF ENGLAND
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THAMES ESTUARY
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SUNK INNER PRECAUTIONARY AREA
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SUNK INNER LIGHT FLOAT
Latitude 51° 51.170’N., Longitude 001° 34.400’E.
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Amendment : Existing Light Float temporarily removed and a replacement Light Vessel established in lieu, as follows:-
Red hull: Light tower amidships: Gp.Fl.(5) 15 seconds: nominal range 12 miles carried at a height of at least 11 metres above
the water line: exhibited during the hours of darkness and in periods of reduced visibility, as follows:-
Flash : 0.4 second
Eclipse : 1.6 seconds
Flash : 0.4 second
Eclipse : 1.6 seconds
Flash : 0.4 second
Eclipse : 1.6 seconds
Flash : 0.4 second
Eclipse : 1.6 seconds
Flash : 0.4 second
Eclipse : 6.6 seconds
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Total :15.0 seconds
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Fog signal giving 1 blast of 2 seconds duration every 30 seconds.
Racon, as follows:-
Type : Agile Frequency
Code : Morse “T”
Nominal Range : 10 miles
Frequency : X band 9320 MHz to 9500 MHz
S band 2920 MHz to 3100 MHz
Display period : On 20 seconds.
Off 40 seconds.
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Total 60 seconds.
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AIS Transmission; MMSI Number 992351027.
Mariners are advised that the transmitted message 21 will be displayed as
“Sunk Inner – Light Vessel”
By Order,
Captain R.H. Barker,
Director of Navigational Requirements,
Trinity House,
London EC3N 4DH.
15th May, 2017
17/2017 Sunk Inner Lt.Flt
Trinity House Notice to Mariners, 15/05/2017