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Under the call of a guard ship, calls a guard boat from that ship to the ship making the signal. It is answered by the guard ship dipping the guard flag.

The night equivalent of the zero flag used as the guard flag is a red truck light.

NUMERAL PENNANTS.

(Pl. III.) 278. Numeral pennants are used only in calls. Their dot and dash equivalents are the same as those of the numeral flags. They are explained fully under "Call system."

FIRST REPEATER.

279. First repeater (used in flag only).

(i) First repeater in a call by flag hoist reproduces the first numeral pennant in the hoist.

(2) In a flag-hoist signal it reproduces the first numeral flag of that hoist. It never is used as a substitute for the special pennants, and is used as a substitute for alphabet flags only in vocabulary signals.

(3) Between two calls and separated from the first repeater means "Relayed from."

SECOND REPEATER.

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2 NO REPEATER

280. Second repeater (used in flag hoists only).

(1) Second repeater in a call by flag hoist reproduces the second numeral pennant in the hoist.

(2) In a flag-hoist signal it reproduces the second numeral flag of that hoist. It is never used as a substitute for the special pennants, and is used as a substitute for alphabet flags only in vocabulary signals.

(3) Under, but separated from a call by a tack line, the second repeater directs the ship addressed to repeat all flag signals until otherwise directed.

THIRD REPEATER.

281. Third repeater (used in flag hoists only)

(1) Third repeater in a call by flag hoist reproduces the third numeral pennant in the hoist.

(2) In a flag-hoist signal it reproduces the third numeral flag of that hoist. It is never used as a substitute for the special pennants, and is used as a substitute for alphabet flags only in vocabulary signals. (3) Hoisted at the yardarm is a call for a P. D. L. message.

4) Under a call and separated from it by a tack line means “Repeat last hoist.”

(5) Between two calls and separated from the first by a tack line the third repeater means “Relay to.”.

(6) Under the force, squadron, flotilla, or division commander's call it means “Relay to your command.”

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Special Flags, Pennants, and Signs.

COURSE PENNANT.

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COURSE
PENNANT

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282. Course pennant(

or "four dashes C" made as one character). Written “Corpen."

(1) The course pennant is distinctive of all signals for "Change course, ships turning in succession (column movements).”

(2) Alone the course pennant means “Resume former course, ships turning in succession."

(3) Over one or two numeral flags (1 to 18), it means “Column right the angle indicated in tens of degrees.”

(4) Under one or two numeral flags (1 to 18), it means “Column left the angle indicated in tens of degrees.”.

(5) Over three numeral flags (000 to 359) it means “Column right ?o true compass course indicated."

(6) Under three numeral flags (000 to 359) it means “Column left So true compass course indicated."

(7) The above-mentioned course pennant signals under the quadron or division flag apply to each unit independently.

(8) Course pennant signals over the squadron flag or division flag are primarily for use in the presence of the enemy. They mean "Execute the course pennant signal by squadrons (or divisions) in succession from the rear, rear squadron (or division) proceeding with the maneuver as soon as the signal is seen, other squadrons (or divisions) turning as soon as next unit astern has begun to turn."

(9) The course pennant is used in conjunction with the formation pennant in “Change front signals.”

DEPLOY PENNANT,

DEPLOY
PENNANT

283. Deploy pennant (

.) or four dashes L” made as one character. Written “Deploy."

(1) The “deploy pennant” is distinctive of all deployment signals.

(2) In any signal without numerals the “deploy pennant” means deploy on present course or on present bearing.

(3) Over one or two numerals (1 to 18), it means “Deploy on interior unit on course to right of present course as indicated in tens of degrees.”

(4) Under one or two numerals (1 to 18), it means “Deploy on interior unit on course to left of present course as indicated in tens of degrees.'

(5) Over three numerals (000 to 359), it means “Deploy on interior unit to right of present course on true compass course indicated.”

(6) Under three numerals (000 to 359), it means “Deploy on in. terior unit to left of present course on true compass course indicated."

(7) The base unit, and order after deployment, are either indicated by the signal or by rules which accompany the signals.

EMERGENCY PENNANT.

284. Emergency pennant(---) or "four dashes A' made as one character. Written “Emerg."

(1) The emergency pennant is dis

tinctive of all emergency signals. * (2) Alone, it means “Attention-silence, or case signaling, and be on the alert for important signals."

EMERGENCY
PENNANT

(3) Hoisted as a separate hoist with another signal it indicates an emergency and that the signal is to be acted upon or executed as soon as seen, or received.

(4) Over a call it indicates an emergency or highly important message which has priority over all calls not preceded by the emergency pennant."

(5) Over one or two numerals (0 to 18), it calls attention to a danger or emergency on a relative bearing in tens of degrees, counting from ahead and to the right.

(6) Under one or two numerals (0 to 18), it calls attention to a danger or emergency on a relative bearing in tens of degrees, counting from ahead and to the left.

(7) Over three numerals (000 to 359), it calls attention to danger or emergency to starboard and on true compass bearing as indicated.

(8) Under three numerals (000 to 359), it calls attention to danger or emergency to port and on true compass bearing as inaicated.

(9) Over M, S, or T, it indicates a mine, submarine, or torpedo to starboard.

(10) Under M, S, or T, it indicates a mine, submarine, or torpedo

(11) The emergency pennant is also used in connection with letters for arbitrary emergency signals.

(12) Emergency pennant signals made by a junior ship will be promptly repeated by ships between the originating ship and the senior ship, such ships designating the originating ship if essential to the intelligent use of the report.

(13) A gun or blasts on the whistle may be used to call attention to an emergency signal.

to port.

FORMATION PENNANT,

FORMATION
PENNANT

285. Formation pennant (----.) or "four dashes F’' made as one sign. Written "Form."

(1). The formation pennant is dis

tinctive of all signals for forming an unformed fleet and for changing the formation and prescribing a new line of bearing or ordering special formations, such as battle formations, cruising formations,

etc. (2) Formation pennant alone means “Resume former formation."

(3). Over one or two numeral flags (0 to 18), it means "Form on relative bearing from guide of fleet or unit addressed as indicated in tens of degrees, counting from ahead and to the right."

(4) Under one or two numeral flags (0 to 18), it means "Form on relative bearing from guide of fleet or unit addressed as indicated in tens of degrees, counting from ahead and to the left."

(5) Over three numeral flags (000 to 359), it means “Form on right of guide of fleet or unit addressed on true compass bearing from guide as indicated."

(6) Under three numeral flags (000 to 359), it means "Form on left of guide of fleet or unit addressed on true compass bearing from guide as indicated."

(7) Any of the above formation pennant signals under the squadron (or division) flag apply to each unit separately and the bearing of each ship is taken from the ship that is the guide of the squadron (or division) to which that ship belongs. In this case, if the fleet is already formed, the fleet line of bearing remains unchanged.

(8). Any of the above formation pennant signals over the squadron (or division) flag, prescribes a new bearing of squadron (or division) guides from the guide of the fleet, squadron, or detachment addressed. In this case, if the fleet is already formed, the bearing of ships from the squadron (or division) guides remains unchanged.

(9) The formation pennant is used in conjunction with the course pennant in “Change front signals."

(10) The formation pennant over B and a numeral flag means “Take battle formation, number as indicated."

(11) The formation pennant over C and a numeral flag means "Take cruising formation, number as indicated.”

(12) The formation pennant is used with other letters for certain arbitrary signals concerning formations. The formation pennant signals are accompanied by rules for forming an unformed fleet and for changing from one formation to another. There are given also general rules for battle formations and for battleship cruising formations.

POSITION PENNANT.

POSITION
PENNANT

286. Position pennant

.) or "four dashes D' made as one character. Written “Posit."

(1) The position pennantis distinct

ive of all positions or stationing signals, including latitude and longitude signals.

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