1. The General Signal Book, containing evolutionary and battle signals, to which the numeral flags were henceforth appropriated.
2. The Vocabulary Signal Book, containing words and general sentences, to which were appropriated the alphabetical flags, now increased to 21 by the addition of P, Q, R, S, T, V, and Y.
3. Night and fog signals.
In 1882, W was substituted for V and slight alterations were made in some of the flags, and in 1889, when the signal books underwent a more extensive revision, the alphabetical series was completed by the inclusion of all the letters, and a series of numeral pendants was added. The flags thus finally established in 1889 remain in use to this day. It may be observed that they contain a number of survivals from Howe's Code of 1790, four indeed with their original significance. They are as follows:
(1) An alphabetical series, in which many of the flags are of the same design as those in the International Code (see [p. 184]) but with different significations, as follows:
| A | flag, diagonally striped yellow & red | = Y | of Internatl Code |
| B | flag, white, bordered with blue & pierced with red | = W | " " " |
| C | flag, divided diagonally yellow, blue, red & black | = Z | " " " |
| D | Pilot Jack (Union Jack with white border[393]) | ||
| E | flag, divided horizontally blue, white, blue | = J | " " " |
| F | flag quarterly yellow & black | = L | of Internatl Code |
| G | flag divided vertically white, black, white | ||
| H | flag, yellow with black ball | = I | " " " |
| I | flag, blue with yellow saltire | = | Numeral 7 of 1790 |
| J | pendant, divided vertically white & red | ||
| K | flag, divided horizontally yellow & blue | ||
| L | flag, white with red saltire | = V | of Internl Code |
| M | pendant, divided horizontally red, yellow, red | ||
| N | pendant, divided horizontally yellow, blue, yellow | ||
| O | flag, divided diagonally red & yellow | = O | " " " |
| P | pendant, blue with white cross | ||
| Q | pendant, red | ||
| R | pendant, yellow with red cross | ||
| S | pendant, divided vertically blue & yellow | ||
| T | pendant, blue with white ball | = D | " " " |
| U | burgee, divided vertically white & blue | = A | " " " |
| V | flag, white pierced blue | = S | " " " |
| W | flag, yellow | = Q | " " " |
| X | pendant, striped vertically black & yellow | ||
| Y | pendant, white with red border | ||
| Z | flag, chequered blue & white | = N | " " " |
Affirmative }
Preparative } as in 1790 (see [Plate XIII])
Negative flag, white with 5 black crosses