A.Admiralty List of Lights and Fog Signals B.Admiralty Maritime Communications C.Admiralty List of Radio Signals D.Admiralty Digital List of Lights
A.offshore set B.onshore set C.head current D.fair or following current
A.navigational hazards and buoyage,meteorological data,details of pilotage,regulations,port facilities and guides to major port entry B.information on charts C.information on operational information and regulation D.information on tides,currents and characteristics of the sea