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SPECIAL WARNING SIGNALS | Up
Signalman 3 & 2 - Aviation theories and other practices | Next
CHAPTER 7 CONVOY COMMUNICATIONS |
CP 1—SAR aircraft is coming to your assistance.
Questions concerning the same basic subject or
basic signal:
DY—Vessel (name or identity signal) has sunk in
lat. . . long. . .
DY 4—What is the depth of water where vessel
sank?
Answers to question or request made by the basic
signal:
HX—Have you received any damage in collision?
HX 1—I have received serious damage above the
waterline.
Supplementary, specific, or detailed information:
IN—I require a diver.
IN 1—I require a diver to clear propeller.
General signal complements appearing in the text
are grouped into three tables. These tables should be
used only as and when specified in the text of the
signals. The tables of complements are as follows:
Table 1—Communication
1. Morse signaling by hand flags or arms
2. Loud hailer (megaphone)
3. Morse signaling lamp
4. Sound signals
Table 2—Logistics
0. Water
1. Provisions
2. Fuel
3. Pumping equipment
4. Fire-fighting appliances
5. Medical assistance
6. Towing
7. Survival craft
8. Vessel to stand by
9. Icebreaker
Table 3—Compass Directions
0. Direction unknown (or calm)
1. Northeast
2. East
3. Southeast
4. South
5. Southwest
6. West
7. Northwest
8. North
9. All directions (or confused or variable)
The medical signal complements are grouped into
three separate tables. As for the general signal
complements, the tables should be used only as and
when specified in the text of the signals. The medical
signal complement tables are as follows:
Table M-1—Regions of the body
Table M-2—List of common diseases
Table M-3—List of medicaments
CROSS-REFERENCES
Cross-references should be used when you are
dealing with signals of same subject. These references
are found in the right column. Before making
additional reference to the index, use extensive
cross-references to facilitate coding.
Example:
EL—See right column for cross-reference
SUMMARY
In this chapter you learned how to communicate
with merchantmen using flaghoist, flashing light,
Morse signaling by hand flag or arms, sound, and
radiotelephony. You were taught the international
distress signals and about the use of the U.S./Russia
supplementary signals. Now it is up to you to put what
you have learned to use.
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