[For charts of the Hydrographic Office which were not listed in the Monthly catalog, refer to the periodical, Notice to Mariners, issued weekly by the Hydrographic Office, where charts are listed as they are issued, with number and complete title information.]
Notes:
[For charts of the Hydrographic Office which were not listed in the Monthly catalog, refer to the periodical, Notice to Mariners, issued weekly by the Hydrographic Office, where charts are listed as they are issued, with number and complete title information.]