Signal Flags of the Navy

Below are signal flags / pennants used by the U.S. Navy,
U.S. Coast Guard and some commercial ships.

Flags:

Flag	Name	Navy Meaning	International Meaning
	Alpha	I have a diver down.  Keep well clear at slow speed.
	Bravo	I am taking in, discharging or carrying dangerous cargo.
	Charlie	"Yes" or "Affirmative".
	Delta	I am maneuvering with difficulty.  Keep clear.
	Echo	I am directing my course to starboard.
	Foxtrot	I am disabled - Communicate with me. - or - On aircraft carriers it indicates flight operations are underway.
	Golf	I require a pilot.
	Hotel	I have a pilot on board.
	India	Coming alongside.	I am directing my course to port.
	Juliet	I am on fire and have dangerous cargo.  Keep well clear.
	Kilo	I want to communicate with you.
	Lima	You need to stop immediately.
	Mike	I am completely stopped.
	November	"No" or "Negative".
	Oscar	Man overboard
	Papa	All personal return to ship; preparing to go to sea. (used while in port only)
	Quebec	Boat recall.  All boats return to ship.	Ship meets healthy regulations. Requesting passage into port.
	Romeo	Preparing to replenish (at sea) or Ready duty ship (in port)	No meaning.
	Sierra	Conducting flag hoist drill.	Moving astern.
	Tango	Do not pass ahead of me.	Keep clear.  I'm engaged in trawling.
	Uniform	You are running into danger.
	Victor	I require assistance.
	Whiskey	I require medical assistance.
	Xray	Stop carrying out your intentions and watch for my signals.
	Yankee	Ship has visual communications duty.	I am dragging anchor.
	Zulu	I require a tug.
	One	Numeral one.	No meaning.
	Two	Numeral two.	No meaning.
	Three	Numeral three.	No meaning.
	Four	Numeral four.	No meaning.
	Five	Numeral five	No meaning.
	Six	Numeral six.	No meaning.
	Seven	Numeral seven.	No meaning.
	Eight	Numeral eight.	No meaning.
	Nine	Numeral nine.	No meaning.
	Zero	Numeral zero.	No meaning.

Pennants:

Pennant	Name	Navy Meaning	Intl Meaning
	Code/Answer	Flag that follows is from International Code of Signals.	Message understood or Numeral decimal point.
	First Substitute	Absence of flag officer or unit commander (in port).	Substitute for first flag in this hoist.
	Second Substitute	Absence of chief of staff (in port).	Substitute for second flag in this hoist.
	Third Substitute	Absence of commanding officer (in port).	Substitute for third flag in this hoist.
	Fourth Substitute	Absence of civil or military official whose flag is flying on this ship.	Substitute for fourth flag in this hoist.
	One	Pennant one.	Numeral one.
	Two	Pennant two.	Numeral two.
	Three	Pennant three.	Numeral three.
	Four	Pennant four.	Numeral four.
	Five	Pennant five.	Numeral five.
	Six	Pennant six.	Numeral six.
	Seven	Pennant seven.	Numeral seven.
	Eight	Pennant eight.	Numeral eight.
	Nine	Pennant nine.	Numeral nine.
	Zero	Pennant zero.	Numeral zero.