A series of electro-mechanical rotor cipher machines developed and used in the early- to mid-twentieth century to protect commercial, diplomatic and military communication.
invented by the German engineer Arthur Scherbius at the end of World War I
What is enigma?
100
Well Done
What is the meaning of the governing group BZ?
100
.- .-.. ..-. .-
What is the signal for Alfa?
200
The flag with the meaning: personnel are working aloft.
What is Flag Kilo?
200
The frequency related to: Maritime Radio Telephone International Distress and Calling Frequency
What is 2182 KHz?
200
A method of transmitting text information as a series of on-off tones, lights, or clicks that can be directly understood by a skilled listener or observer without special equipment
What is Morse Code?
200
Action is being carried out (or I am)
What is the meaning of the governing group BA?
200
.-.-.-
What is the signal for period(.)?
300
The flag with the meaning: all personnel belonging to this ship return to ship immediately.
What is flag Papa?
300
Threatened by grave and imminent danger and requires immediate assistance.
What is Mayday?
300
the telegraphy system conveying information at a distance by means of visual signals with hand-held flags, rods, disks, paddles, or occasionally bare or gloved hands
What is flag semaphore?
300
If you desire
What is the meaning of the governing group BZ?
300
........
What is the prosign for error?
400
Flag meaning: I have military guard duty.
What is flag Zero?
400
Urgent message concerning the safety of a ship aircraft/person onboard or within sight
What is PANPAN, PANPAN, PANPAN ?
400
The first person to describe the physical property of electromagnetic radiation.
Who is William Herschel?
400
Unable to (_____)
What is the meaning of the governing group BU?
500
Pennant with the meaning: absence of chief of staff
What is 1st pennant?
500
A Message containing an important navigational or meteorological warning
What is Securité, Securité, Securité?
500
A technology that shaped modern society, developed in the 1960's by University of California, Los Angeles professors.