| A | Undergoing speed trials. |
| B | I am taking in or unloading explosives. |
| C | Yes (affirmative) |
| D | Keep clear of me. I am manoeuvring with difficulty. |
| E | I am altering course to starboard. |
| F | I am disabled — communicate with me. |
| G | I require a pilot. |
| H | I have a pilot onboard |
| I | I am altering course to port |
| J | I am going to send a message by semaphore. |
| K | You should stop your vessel instantly. |
| L | You should stop. I have something important to communicate. |
| M | I have a doctor on board. |
| N | No (negative). |
| O | Man overboard. |
| P | At sea: Your lights are out.
In harbour: Vessel about to sail. |
| Q | My vessel is healthy. I request free pratique. |
| R | The way is off my ship. |
| S | Engines are going astern. |
| T | Do not pass ahead of me. |
| U | You are standing into danger. |
| V | I require assistance. |
| W | I require medical assistance. |
| X | Stop carrying out your intention and watch my signal. |
| Y | I am carrying mail. |
| Z | Used to address or call shore signal stations. |
Copyright © 1996 Lars Bruzelius.