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Cards 1
Flashing light uses Morse Code language.
Yes
No
Cards 2
Non-directional method goes to one ship
Yes
No
Cards 3
Directional method points to one receiver
Yes
No
Cards 4
A semaphore flag is bright and colored
Yes
No
Cards 5
In radio silence, radio communication is impossible
Yes
No
Cards 6
In radio failure, communication is not allowed
Yes
No
Cards 7
A navigation message uses three letter signal
Yes
No
Cards 8
A medical emergency uses a two letter signal
Yes
No
Cards 9
An urgency or emergency is sent with a single letter signal
Yes
No
Cards 10
A halyard is a rope to raise flags
Yes
No
Cards 11
Received is the same as Roger
Yes
No
Cards 12
If you spell you have to say "say again"
Yes
No