Quick answer
Numeral Four is the red pennant bearing a white cross in the International Code of Signals. It represents the numeral 4. The official identification chart distinguishes it from Numeral Eight, which has a red cross on white. See the International Flags and Pennants chart in Publication 102.
| Feature | Description | Evidence status |
|---|---|---|
| Designation | Numeral pennant 4 | Identified in the official Publication 102 chart. |
| Pattern | Red pennant bearing a white cross. | Official identification pattern. |
| Proportions and geometry | No exact ratio, cross width or cross position specified here. | A dimensioned construction standard was not verified. |
| Colours | Red and white; no numerical colour values assigned. | Colour names identify the pattern; physical colour tolerances were not verified. |
| Manufacture | No standard size, fabric or seam specification asserted. | Common manufacturing practice was not established by the reviewed evidence. |
Construction and reproduction
The identification chart supports the red-and-white pattern, but this record does not treat its illustration as a dimensioned manufacturing drawing. Exact proportions and cross geometry remain unverified. Any independently drawn version should be identified as an editorial reconstruction; screen colour values should be labelled as approximations rather than official textile standards.
Code history and dating limits
The title page of NGA Publication 102 identifies the Code as adopted by the Fourth Assembly of the Inter-Governmental Maritime Consultative Organization in 1965 and labels the publication United States Edition, 1969, revised 2020. These dates describe the Code and publication; they do not establish when Numeral Four’s red-and-white design first appeared. See Publication 102 front matter.
This record concerns the International Code numeral pennant, rather than an attributed historical variant. No original design-adoption date or independently verified 2026 operational-status claim is assigned.
Related numeral pennants
Compare Numeral Zero, Numeral One, Numeral Two and Numeral Three.