Study sheet

Morse code — all cards

A–Z and 0–9 per the ITU-R M.1677 international Morse alphabet. Runs pattern→character; reversible in the player.

Cards

36 cards

Read the pattern.

0 — -----

Read the pattern.

1 — .----

Read the pattern.

2 — ..---

Read the pattern.

3 — ...--

Read the pattern.

4 — ....-

Read the pattern.

5 — .....

Read the pattern.

6 — -....

Read the pattern.

7 — --...

Read the pattern.

8 — ---..

Read the pattern.

9 — ----.

Read the pattern.

A — .-

Safe water marks may show a white light flashing Morse "A" (IALA MBS).

Read the pattern.

B — -...

Read the pattern.

C — -.-.

Read the pattern.

D — -..

Read the pattern.

E — .

Read the pattern.

F — ..-.

Read the pattern.

G — --.

Read the pattern.

H — ....

Read the pattern.

I — ..

Read the pattern.

J — .---

Read the pattern.

K — -.-

Read the pattern.

L — .-..

Read the pattern.

M — --

Read the pattern.

N — -.

Read the pattern.

O — ---

The distress group ··· ––– ··· (SOS) is Annex IV 1(d).

Read the pattern.

P — .--.

Read the pattern.

Q — --.-

Read the pattern.

R — .-.

Read the pattern.

S — ...

The distress group ··· ––– ··· (SOS) is Annex IV 1(d).

Read the pattern.

T — -

Read the pattern.

U — ..-

Single-letter signal (International Code of Signals): "you are running into danger".

Read the pattern.

V — ...-

Read the pattern.

W — .--

Read the pattern.

X — -..-

Read the pattern.

Y — -.--

Read the pattern.

Z — --..

Card backs quote the Rules — public sector information reproduced under the Open Government Licence v3.0 (source: MSN 1781 — see the Rules reference).

Independent preparatory study aligned to the MCA OOW (Yachts <3000 GT) oral examination syllabus. Not an MCA-approved course and confers no credit toward a Certificate of Competency.