VOLUME I Multinational Maritime Tactical Instructions and Procedures

initial point. A well-defined point, easily distinguishable visually and/or electronically, used as a
starting point for the run to the target; a pre-selected point on the surface of the earth which is
used as a reference.
inner defense zone (IDZ). A circle around each CV used to coordinate fighter and missile
engagements.
inner defense zone coordinator (IDZC). The TDS tasked to coordinate fighter and missile
engagements within the IDZ.
Integrated operations. Operations under which a designated unit is attached to a specific Task
Force/Group under Tactical Command (TACOM) and Tactical Control (TACON) of the OTC of
the specified Task Force/Group. Upon receiving TACOM, the OTC assumes the responsibility
for all operations and safety of the assigned unit. Operational Control (OPCON) remains with
the assigning authority.
intercepting search. A type of search designed to intercept an enemy whose previous position is
known and the limits of whose subsequent course and speed can be assumed.
J
joining (aircraft). The procedure whereby an aircraft commander transfers tactical control of his aircraft
to the OTC.
joining (ships). A ship or group of ships which have sailed independently and subsequently rendezvous
with a main body or convoy.
NOT RELEASABLE
Joint Restricted Frequency List (JRFL). A listing of frequencies which map the use of the EM
spectrum within the area of responsibility. The JRL is composed of Taboo, Protected, and
Guarded Frequencies.
joint zone. An air and sea area in which friendly air, surface, and subsurface forces operate
simultaneously.
L
lame duck. An aircraft in a minor state of emergency resulting from ordnance or radio failure, oxygen
leak, or other cause.
large ship. A ship over 450 feet (or 137 meters) in length.
MTP 1(D), Vol. I
leaver. A section of the main convoy or an independent ship which breaks off to proceed separately
to its own prearranged terminal port.
line.
A formation in which ships are formed along a straight line extending in any direction from the
line guide but not directly ahead or astern.
line abreast. A line in which ships form directly abeam of the line guide.
Glossary-13 CHANGE 1