United States Naval Sea Cadet Corps Region 7-1 – Recruit Training Visual Signals.

United States Naval Sea Cadet Corps

Region 7-1 – Recruit Training

Visual Signals



Introduction

• Communication is the link that allows the Navy, and the entire armed forces, to maneuver as a cohesive fighting force.

• Even though modern technology has increased the range and ease of communication the basics must be learned in the event technology fails .



Class Objectives

1. Identify three main visual communication methods used by the Navy.

2. Understand the method of flashing light and Morse Code.

3. Identify the dual meaning of maritime flaghoist flags.

4. Learn to send and receive messages using semaphore.



Visual Communication Methods

• Flashing Light

• Semaphore

• Flaghoist



Flashing Light

Directional (day or night use)

Searchlight, Multipurpose Light

Omni Directional (night use only)

Yardarm Blinkers

• Directional is used during day or night

• Omni Directional is for night use only

• International Morse Code is used to send signals



Flashing Light

International Morse Code

A .- B -... C -.-. D -.. E . F ..-. G --.H .... I .. J .--- K -.- L .-.. M -- N -.O --- P .--. Q --.- R .-. S ... T - U ..-V ...- W .-- X -..- Y -.-- Z --..



Flaghoist

• Rapid transmission of message

• Very accurate

• Daytime use ONLY!



Flaghoist

• 68 flags in an Allied Flag Bag– 26 Letter Flags– 10 Numeral Flags– 10 Numeral Pennants– 18 Special Flags and Pennants– 4 Substitutes



Flaghoist

26 Letter FlagsEach of the 26 Letter Flags has a stand alone meaning



Flaghoist

A – Diver Below (when stationary) or undergoing a speedtrial

B – Taking on or discharging explosives

C – Affirmative (yes)

D – Keep Clear, I am maneuvering with difficulty



Flaghoist

E – Altering course to starboard

F – Disabled, communicate with me

G – I require a pilot

H – I have a pilot on board



Flaghoist

I – Altering course to port

J – Am going to send a message by semaphore

K – Stop instantly

L – Stop, I have something important to communicate



Flaghoist

M – I have a doctor on board

N – Negative (no)

O – Man overboard

P – All aboard, vessel about to put to sea orlights are out (at sea)



Flaghoist

Q – My vessel is healthy and I request free pratique (permission to land vessel at a foreign port)

R – The way is off my ship, you may feel yourway past me

S – My engines are going full speed astern

T – Do not pass ahead of me



Flaghoist

U – You are standing into danger

V – I require assistance (not distress)

W – I require medical assistance

X – Stop carrying out your intentions and watch formy signals



Flaghoist

Y – I am carrying mail or I am dragging anchor

Z – Used to address or call shore stations or I require a tug

N & C – I am in distress



Flaghoist

10 Numeral Flags

1 2 3 4 5

6 7 8 9 0



FlaghoistPractical Exercise

1)

2)



FlaghoistPractical Exercise (con’t)

3)



Semaphore

• Quickest method to send a message

• Most difficult to read

• Signalmen use flags or lighted wands

• Used in day or night

• Very short range

• Position of flags or wands indicates

letter or symbol of message



Semaphore



Semaphore

A

B

C

D

E

F



Semaphore

G

H

I

J

K

L



Semaphore

M

N

O

P

Q

R



Semaphore

S

T

U

V

W

X



Semaphore

Y

Z



SemaphorePractical Exercise



Summary

1. Identify three main visual communication methods used by the Navy.

2. Understand the method of flashing light and Morse Code.

3. Identify the dual meaning of maritime flaghoist flags.

4. Learn to send and receive messages using semaphore.

United States Naval Sea Cadet Corps Region 7-1 – Recruit Training Visual Signals.

Documents

Transcript of United States Naval Sea Cadet Corps Region 7-1 – Recruit Training Visual Signals.