Coston signals and other similar lights are best suited for preconcerted signals.
VERY'S NIGHT SIGNALS.
The navy signal book is used, to which the following explanation refers:
The letter R stands for red and the letter G for green, and each letter designates a separate star or cartridge. Bracketed stars are a pair of different colors, discharged together from two pistols. The system is based on the Army and Navy Code, red representing "1" and green "2."
1—RRRR.
2—GGGG.
3—RRRG.
4—GGGR.
5—RRGG.
6—GGRR.
7—RGGG.
8—GRRR.
9—RGGR.
10—GRRRG.
| Affirmative, or "Yes" | RGRG |
| Negative, or "No" | GRGR |
| Numeral | GRGG |
| Interrogatory | RGRR |
| Annulling | RRGR |
| Divisional point, date, designator, or interval | GGRG |
| Telegraphic dictionary, | { | R | } | bracketed. |
| G |
| Geographical list, | { | R | } | followed by a rocket. |
| G |
| Boat signals, rocket followed by | { | R | } |
| G |