Moving a light beacon on an ADMIRALTY Standard Nautical Chart

Begin by using the grid box to reference the Nautical Mile (NM) position on the chart. Then, use the latitude and longitude guides on the tracing and the chart to precisely place the tracing in its exact new location.

Using a 7H pencil, mark the new position of the light through the tracing onto the chart beneath. Remove the tracing to reveal the chart.

Using a magenta 0.18 pen, draw a small circle on the marked spot. Then, draw a neat arrow to link the existing position of the light beacon with the new position. Remember, lights must be drawn in their correct position, not just arrowed in, unless a 'move' is explicitly stated in the textual NM.

Lay the tracing back over the chart to check that the new light position is correct. Once all updates have been applied, add the NM update number to the chart's 'Notices to Mariners' section in the bottom left corner.