Third Substitute Pennant Picture
International Code of Signals – Nautical pennant used by ships at sea and the U.S. Navy. This short pennant is described as being horizontally divided in three sections with alternating colors white, black, white. This pennant is known as the third substitute or replacement.
Pennant Code Meaning
Substitute for the third flag in this hoist or Absence of commanding officer (Inport).
The use of substitutes is to enable the same signal flag, either alphabetical flag or numeral pennant, to be repeated one or more times in the same group, in case only one set of flags is carried on board. The third substitute always repeats the third signal flag of that class of flags which immediately precedes the substitute.
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