Example: If a junior commanding officer requests permission to proceed on duties assigned by signaling BH TACK the signal, his/her superior would reply C, signifying “Permission granted to proceed on duties assigned” When the governing group applies to two or more signals following it, BX is inserted after the last of the signals to which it is to apply. Call Signs, Sequence Numbers, and Unit Indicators Call signs, address groups, and sequence numbers may be used in conjunction with groups from ATP 1, volume II to complete, amplify, or vary the meaning of the signal. Generally, call signs used to indicate ships, units, or commanders referred to in the meaning of the signal, follow the entire signal. An exception is those signals indicating bearing and distance from a unit, where the call sign appears within the signal. A unit indicator (GROUP/FLOT, SQUAD, DIV, SUBDIV) following a signal indicates the unit carrying out the meaning of the signal. Description Signals A description signal, used to supplement a signal group, normally describes own or enemy forces or conveys other information. A description signal consists of DESIG, followed by numerals, letters, or groups necessary to amplify the meaning of the signal. For example, a flaghoist reporting the sighting of enemy forces might be supplemented by DESIG 2C, which would indicate the forces were composed of two light cruisers. Plain Language When appropriate, DESIG followed by letters and/or numerals indicates that such a group is to be interpreted literally. DESIG is to immediately precede the group to be interpreted, and only that group. When more than one group is to be governed, DESIG separated by TACK will govern those groups. Exceptions are when a plain number must be used to complete the meaning of a signal or when used in the meaning of a signal. Words may be spelled out within the text of a signal to complete or modify the meaning. For example, to spell out the word yes, the hoist would be as follows: DESIG pennant YANKEE flag ECHO flag SIERRA flag Because spelling out words requires a number of flags, plain text is never used in flaghoist signals when the same information can be conveyed by code. Operating Signals The Q and Z communication operating signals contained in ACP 131 may be used alone or to supplement groups in ATP 1, volume II. International Code of Signals Signals contained in International Code of Signals, Pub 102, may be used alone or in conjunction with signal groups from ATP 1, volume II. Whenever international groups are used alone in flaghoist, international procedure is to be used in answering. Whenever military use is made of International Code of Signals, groups will be preceded by CODE when transmitting by flaghoist, or by INTERCO by Morse, voice, or semaphore. When communicating with non-military ships or station or non-Allied warships, refer to International Code of Signals. Tables The supplementary tables are located in chapter 33 of ATP 1, volume II. These tables are primarily intended to expand the meaning of certain basic groups, but they can be used with any signal within the volume. When adding an item from the supplementary tables to the basic group, the table identifying letter must follow the item number. When a signal from the supplementary tables is used by itself, it will be preceded by the governing group BV except for the supplementary table X, where it may be preceded by the second substitute. Numeral flags 1 through 9 are not to be used with the supplementary table. BASIC MANEUVERING FLAGS Navy signal flags and pennants include six that pertain directly to maneuvering: CORPEN, FORMATION, SPEED, STATION, SCREEN, and 5-9