Alpha - Diver Down Keep Clear Bravo - Dangerous Cargo Charlie - Yes

Delta - Keep Clear

Echo - Altering Course to Starboard

Foxtrot - Disabled

Golf - Want a Pilot

Alpha
Diver Down Keep Clear
Bravo
Dangerous Cargo
Charlie
Yes

Delta
Keep Clear

Echo
Altering Course to Starboard

Foxtrot
Disabled

Golf
Want a Pilot

Hotel - Pilot on Board

India - Altering Course to Starboard

Juliett - On Fire Keep Clear

Kilo - Desire to Communicate

Lima - Stop Instantly

Mike - I am Stopped

November - No

Hotel
Pilot on Board

India
Altering Course to Starboard

Juliett
On Fire Keep Clear

Kilo
Desire to Communicate

Lima
Stop Instantly

Mike
I am Stopped

November
No

Oscar - Man Overboard

Papa - About to Sail

Quebec - Request Pratique

Sierra - Engines Going Astern

Tango - Keep Clear

Uniform - Standing Into Danger

Oscar
Man Overboard

Papa
About to Sail

Quebec
Request Pratique

Romeo

Sierra
Engine Going Astern

Tango
Keep Clear 

Uniform
Standing Into Danger

Victor - Require Assistance

Whisjkey - Require Medical Assistance

X-Ray - Stop Your Intention

Yankee - Am Dragging Anchor

Zulu - Require a Tug

Answering Pennant

Victor
Require Assistance

Whiskey
Require Medical Assistance

X-Ray
Stop Your Intention

Yankee
Am Dragging Anchor

Zulu
Require a Tug

Answering Pennant

One

Two

Three

Four

Five

Six

Seven

One

Two

Three

Four

Five

Six

Seven

Eight

Nine

First Substitute

Second Substitute

Third Substitute

Eight

Nine

1st Substitute

3nd Substitute

3rd Substitute


DRESSING SHIP

The sequence of flags can be any order but the following is recommended to give a harmonious colour pattern.
Starting forward AB2 UJ1 KE3 GH6 IV5 FL4 DM7 PO 3rd sub RN 1st sub ST Zero CX9 WQ8 ZY 2nd sub

USEFUL 2 LETTER SIGNALS
AC - I am abandoning my vessel
BR - I require a helicopter
AN - I need a doctor
CD - I require immediate assistance
DV - I am drifting
LO - I am not in my correct position: used by a light vessel
NC - I am in distress and require immediate assistance
PD - Your navigation lights are not visible
PP - Keep well clear of me
QD - I am going ahead
RU - Keep clear of me; I am maneuvering with difficulty
SO - You should stop your vessel instantly
UM - The Harbour is close to traffic
UP - Permission to enter Harbour is urgently requested. I have an emergency
YU - I am going to communicate with your station by means of the International code of signals
EF - SOS / MAYDAY has been cancelled
FA - Will you give me my position?
GW - Man overboard. Please take action to pick him up
JL  -  You are running the risk of going aground
QT - I am going astern
QQ - I require health clearance
QU - Anchoring is prohibited
QX  -  I request permission to anchor
ZD1 - Please report me to the Coast Guard, New York
ZD2 - Please report me to Lloyds, London
ZL   -  Your signal has been received but not understood