Signalman Sam's
Semaphore Flag Code Table

ABCDE
FGHIJ
KLMNO
PQRST
UVWXY
 
Z IntervalAttentionNumerics

Notes:

Begin a message with Attention.
Move smartly from one letter position to the next.
Do not send faster than your receiver can copy.
To send a double letter, pull flags in, then back out.
Between words use Interval.
Between sentences send Interval twice.
End a message with Interval three times.
To send digits, use Numerics, then use:
A for 1
B for 2
C for 3
D for 4
E for 5
F for 6
G for 7
H for 8
I for 9
J for 0