NCWG2-08.1A Radio Activated ATONs 2 nd Meeting of the Nautical Cartography Working Group April 2016 Monaco

Action NCWG1-16  “CA/US to prepare [a] joint proposal for [the] specification and abbreviation for radio activated Aids to Navigation.”  CA/US recommendation is based on our current practice – NOAA and CHS have similar methods to chart radio activated AtoNs – Each appends a label to the signal type label and also adds a note to the chart – The note describes the signal type, how the signal is activated, and the duration of signal's activation

As charted by CHS 3 ItemExample Type of signalManual Fog Signal Activation method keying radio mike 5 times within 5 seconds Channel / Frequency channel 19 VHF ( MHz) Duration of signal activation Horn will remain active for 30 minutes.

As charted by NOAA 4

B Manually activated signals must be depicted by a legend containing the international abbreviation 'Man,' for example '(Man see note),' after the signal type (in sloping type if associated with a floating aid). A note should be inserted to describe the type of signal, activation method, channel/frequency, and duration of signal activation; or to refer to an associated publication for details. For example: Manually Activated Sound Signal (Man) Horn is activated by keying the mic 5 times on VHF-FM Ch 81. Horn will operate for 30 minutes. or Manually Activated Sound Signal (Man) For activation method details, see [associated publication]. S-4 Addition for Sound Signals 5

International Abbreviations Man Manually activated P56, R2: Modification to S-4, B

Ideas for Depiction of Manually Activated Lights 7 Fl.G.3s (Man see note)Man Fl.G.3s (see note)

B-471.1The type of light must only be shown on charts in a few special cases, in particular: Aeronautical lights (Aero), see B-476. Aeronautical lights (Aero), see B-476. Direction lights (Dir), see B and B Direction lights (Dir), see B and B Leading lights (Ldg), only where, because of scale, the two lights appear at a single position on the paper chart, and the leading line cannot be charted, see B Leading lights (Ldg), only where, because of scale, the two lights appear at a single position on the paper chart, and the leading line cannot be charted, see B Manually activated lights (Man), see B Manually activated lights (Man), see B B-473.8Manually activated lights must be depicted by a legend containing the international abbreviation 'Man,' (in sloping type if associated with a floating aid). For example: Fl.G.3s (Man see note) Fl.G.3s (Man see note) A note should be inserted to describe the activation method, channel/frequency, and duration of light activation; or to refer to an associated publication for details. For example: Manually Activated Light (Man) Light is activated by keying the mic 5 times on VHF-FM Ch 81. Light will operate for 30 minutes. or Manually Activated Light (Man) For activation method details, see [associated publication]. S-4 Modifications for Lights 8

Possible INT1 Changes 9

  NCWG is invited to:   a. consider the recommendations presented in Annex A to modify S-4 for the specification of a standard approach to charting manually activated sound signals, and the corresponding changes to INT1, as recommended in Annex C.   b. make any necessary adjustments to the recommended S-4 text, and INT1 changes   c. take the required steps to implement the changes,   d. consider the possibility of other changes needed to accommodate manually activated lights and other types of aids to navigation, as suggested in Annex B. Action required of NCWG 10