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Semaphore Training. USNSCC Designed by Cadet J. Peterson Harlan R. Dickson Division Manchester, New Hampshire. What is Semaphore?.

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semaphore training

Semaphore Training

USNSCC

Designed by Cadet J. Peterson

Harlan R. Dickson Division

Manchester, New Hampshire

what is semaphore
What is Semaphore?
  • Semaphore is a method of visual signaling. It is most commonly done by the use of flags but can also be done with lights. Before the invention of the telegraph, signaling from high towers was used to transmit messages between distant points. In the Navy it is used to signal between ships by sailors manipulating flags to indicate the different letters of the alphabet.
the semaphore flag
The Semaphore Flag

The flags are usually square, red and white, divided diagonally with the red portion in the upper hoist.

semaphore flag positions
Semaphore Flag Positions
  • Signaling with Semaphore Flags resembles a clock face divided into 8 sections
semaphore flag positions continued
Semaphore Flag Positions (continued)

Right Hand Up is at position 12 (RH up)

Right Hand High is between position 1 and 2 (RH high)

Right Hand Out is position 3 (RH Out)

Right Hand Low is between

position 3 and 4 (RH low)

Right Hand Down is position 6

(RH Down)

Left Hand Up is at position 12 (LH up)

Left Hand High is between

position 10 and 11 (LH high)

Left Hand Out is position 9 (LH Out)

Left Hand Low is between

position 7 and 8 (LH low)

Left Hand Down is position 6

(LH Down)

slide11
The sign for echo is

LH High

RH Down

Echo
india
The sign for india is

LH Across Low

RH Out

India
juliet
The sign for juliet is

LH Out

RH Up

(also the alphabetic sign)

Juliet
oscar
The sign for oscar is

LH Across High

RH Out

Oscar
whiskey
The sign whiskey is

LH Out

RH Across High

Whiskey
slide30
The sign for xray is

LH Low

RH Across High

Xray
slide32
The sign for zulu is

LH Out

RH Across Low

Zulu
error
If you make an error while sending a message you must send this signal before repeating the sign you intended to send.

RH Raised and Lowered

LH Raised and Lowered

Together

Error