COMMODORE'S FLAG
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Definitions
1. a ship, on which a Flag officer has his office and staff, flies, when he is aboard, a blue flag from the yardarm which is the flag signal that he is aboard. When he leaves or goes or is not aboard, the blue is lowered. In our case this is called the Commodore's Flag. We have such a flag. (FO 1)
2. blue with white stars. WO 38)