The Weems and Plath Chart Correction Template contains the Region A & B IALA Maritime Buoyage symbols required for updating and correcting nautical charts.
Designed for use with a fine line pen (not supplied
Reference US Nautical Chart No. 1 or UK Admiralty Chart 5011 for assistance with symbol identification
Admiralty publication NP294 - How to Keep Your Admiralty Products up-to-date Sections on tools needed, publications, Notices to Mariners, Format of Chart Updates, how to apply the updates to your charts, explanation of terms used, symbols, drawing conv