Sorry, busy at the moment so can't be specific. I recall solving the problem a few years ago. Stuff from this cut and paste from my charts info may be useful.
= USA Chart 1 “Nautical Chart Symbols Abbreviations and Terms”
[similar to NZ use of Chart 5011 (INT 1) Symbols and Abbreviations used on Admiralty Charts, published by the United Kingdom Hydrographic Office.]
I’ve cut and pasted from chapszip into:
chart symbols not legend USA.doc
For information on symbols, terms and abbreviations used on nautical charts, LINZ recommends that you refer to the following two publications:
Chart 5011 (INT 1) Symbols and Abbreviations used on Admiralty Charts, Edition 3, published by the United Kingdom Hydrographic Office - available from Trans Pacific Marine
Karte 1 (INT 1) Symbols, Abbreviations, Terms used on Charts, 6. Edition 2008, published by the German Federal Maritime and Hydrographic Agency (Bundesamt für Seeschifffahrt und Hydrographie).
Both of these publications are regularly maintained and contain all the symbols, terms and abbreviations used in New Zealand charts.
Publication NZ 201 (INT 1) Symbols, Terms and Abbreviations Used on Charts has been withdrawn as advised on 15 August 2008 in Notices to Mariners Edition 17 - NZ 162/08. LINZ no longer provides an online PDF version of this publication.
NZ Notice to Mariners says “It is emphasized that the List of Lights is the authority for lights and that many alterations, especially those of a
temporary but operational nature, may only be promulgated as corrections to the List of Lights.”
The Mariner’s Handbook (NP 100) gives a fuller explanation of the limitations of charts. All users should study it in their own interest.
For compliance with New Zealand legal requirements for nautical charts and publications please refer to
Maritime Rules Part 25, as supported by Maritime New Zealand Marine Guidance Notice 8 "Use of Electronic
Charts, ECDIS and ENCs in NZ" available from the Maritime New Zealand website
Further details can be found in the New Zealand Nautical Almanac (NZ204), Annual New Zealand Notices to
Mariners, No.1 and on the LINZ website www.linz.govt.nz