International Code Numeral Pennant Zero

Quick answer

Numeral pennant zero represents the digit 0 in International Code flag signaling. Its identifying pattern is yellow–red–yellow, with a red band across the yellow pennant. The spoken figure code word is Nadazero. See the official New Zealand nautical almanac.

Identification and specification limits
Item	Description
System	International Code of Signals
Function	Numeral 0
Form and arrangement	Pennant with yellow–red–yellow areas from hoist toward fly.
Exact proportions	Not established here; no ratio inferred from a reference illustration.
Colour specification	Yellow and red identification colours; no verified textile standard, Pantone reference or digital colour values supplied.

Construction and reproduction

The cited chart supports identification, not a dimensioned production pattern. Exact band widths, taper, fly-end dimensions, seams and fittings remain unverified. No common manufacturing ratio is asserted without a documented supplier specification. Screen colours would be approximations; a newly drawn outline would be an editorial reconstruction rather than a certified master.

Use in numerical signals

Numbers are transmitted with numeral pennants. For repeated digits when only one flag set is available, the Code provides substitutes. Its example for 1100 is, from top to bottom: numeral 1, first substitute, numeral 0, third substitute. A decimal point uses the answering pennant. See NGA Publication 102, Chapter 1, Sections 4–5.

Historical context

The revised Code was adopted by IMCO in 1965; the United States 1969 edition became effective on 1 April 1969. NGA’s consulted publication is labelled revised 2020. These are Code-edition milestones, not established dates for the first appearance of this pennant’s design. See the title pages and preface of Publication 102.