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📡 Naval Flags Reference

International Naval Signal Flags

Reference Chart

Official companion to your Copy That™ – NATO Signals Certificate

Letter Flags (A–Z)

A – Alfa

Diver down – keep clear

B – Bravo

Dangerous cargo

C – Charlie

Yes / Affirmative

D – Delta

Keep clear – manouvering

E – Echo

Altering course to starboard

F – Foxtrot

Disabled – communicate

G – Golf

I require a pilot

H – Hotel

Pilot on board

I – India

Altering course to port

J – Juliett

On fire – keep clear

K – Kilo

I wish to communicate

L – Lima

Stop instantly

M – Mike

My vessel is stopped

N – November

No / Negative

O – Oscar

Man overboard

P – Papa

All aboard – departing

Q – Quebec

My vessel is healthy and I request free pratique

R – Romeo

Used in combination

S – Sierra

Engine going astern

T – Tango

Naval: Do not pass ahead of me. Merchant/ICS: Keep clear of me; I am engaged in pair trawling.

U – Uniform

You are running into danger

V – Victor

I require assistance

W – Whiskey

I require medical assistance

X – X-ray

Stop your intentions, watch for my signals

Y – Yankee

Dragging anchor

Z – Zulu

I require a tug

Numeral Flags (0–9)

0 – Zero

Number Zero / Null

1 – One

Number One

2 – Two

Number Two

3 – Three

Number Three

4 – Four

Number Four

5 – Five

Number Five

6 – Six

Number Six

7 – Seven

Number Seven

8 – Eight

Number Eight

9 – Nine

Number Nine

Special Signals

In distress – require immediate assistance

SOS

··· − − − ··· transmitted by any means available

Love and Kisses — traditional radio and telegraphy shorthand. Two numeral 8 flags hoisted together.