Navigationally significant changes to Nautical Charts , Lights , Fog signals , Radio signals and sailing directions are published in weekly notice to mariners.
Reprints of all Radio navigational warnings in force and a summary of charts & publication being published.
NOTE:-
- Contains information, which enables the mariner to keep his charts and books published by the hydrographic department up to date for the latest reports received.
- They should be retained until the next annual summary to admiralty notices to mariners is received.
- However weekly editions dating as far back as 18 months may be required and must be kept safely on board.
- The hydrographer of the navy publishes them.
Contents Of WNTMs :
# T/P Notices On The Last Week Of The Month.
# List Of Publications In Current Usage Quarterly.
# List Of Enforced Navareas Quarterly.
