First Substitute Pennant (1st Repeat Code Signal Flag) Malacca Strait British Admiralty Nautical Chart 1911:

British Admiralty Nautical Chart 1911: Mediterranean Sea

Eastern and Western Approaches to the Narrows including Murray`s Anchorage is a standard nautical chart

NOAA Nautical Chart 16707: Prince William Sound-Valdez Arm and Port Valdez

British Admiralty Nautical Chart 3132: Strait of Gibraltar to Arquipelago da Madeira is a standard nautical chart

First Substitute Pennant (1st Repeat Code Signal Flag) Malacca Strait British Admiralty Nautical Chart 1911:Phonetic Pronunciation: First sub Navy Meaning: Absence of flag officer or unit commander (Inport). International Meaning: Substitute for the first flag in this hoist. International Code of Signal Flags have double stitched seams, finished nylon rope distance lines and ash toggles.