UNCLAS/ /N03123/ /
PPP MOVREP CONSTELLATION, AVWX 01/ /
ORG SP CONSTELLATION, 02/ /
ETD P SAN DIEGO CA, 191400Z5 FEB 03/ /
VIA L 32-40N9 118-11W2, 191756Z9 FEB 04/ /
VIA L 33-00N6 119-58W4, 200115Z9 FEB 05/ /
MOD LOC 32030N8 118-50W5 200516Z4 FEB OPERATING WITHIN 100NM, 06/ /
ORG SP DOWNES, 07/ /
RDV L 32-40N9 118-11W2, 191856Z0 FEB 08/ /END
Figure 4-42.Typical movement report (MOVREP).
REPORT (MOVREP) AND
LEARNING OBJECTIVES: Discuss and
define the terms used in the ships movement
report (MOVREP) messages and the points-of-
intended-movement (PIM) reports. Explain
how PIM are plotted on a chart or display.
Navy and Coast Guard ships usually send a
Movement Report (MOVREP) message before leaving
a port or an operating area. Understanding MOVREPs
is not difficult if the format, terms, and standard
abbreviations are known.
The MOVREP message uses a specific format and
abbreviated plain language (fig. 4-42). Each line is
numbered at the end of text, such as 01//, or 08//. This
will enable the reader to know if any lines of
information have been lost or deleted.
A MOVREP will always have END at the end of the
last line to alert the reader that no additional lines
follow. Check-sums, a method of verifying that no
numbers in a group were deleted or changed during
transmission, are used with all date-time groups and
latitude or longitude positions. To obtain a check-sum,
add all of the digits in a reported group together, and the
units digit of the resulting sum is the check-sum.
MOVREP TERMS AND STANDARD
Line 1 identifies the sender of the report and
contains requests for Enroute Weather Forecasts
(WEAX), Aviation Enroute Weather Forecasts
(AVWX), or other specialized geophysics support.
Line 2, ORG, provides the ship (SP), which will change
position. The ETD line provides the estimated time of
departure and location (P for port, L for
latitude/longitude, or POS for present position), and
UTC departure date-time group. The date-time groups
are always arranged in the format ddhhmmZk MMM,
where dd is the day of the month, hh is the UTC hour,
mm is the UTC minute, and MMM is the three-letter
month abbreviation. The k is a check-sum. Enroute
latitude and longitude positions and times follow the
term VIA. Latitude and longitude points are provided in
degrees and minutes, with check-sums. Occasionally,
the type of route will be identified by GC for great
circle, RB for rhumb line, DI for direct route, CO for
coastal route, or STM for storm evasion.
destination follows either an ETA or MOD designation.
ETA stands for estimated time of arrival, and is
normally followed by a port or position and a date-time
group. MOD stands for miscellaneous operational
details, and is most commonly seen followed by the
term LOC, for local operations. The last two lines in the
example indicate that CONSTELLATION will
rendezvous (RDV) with the DOWNS, at the position
and time indicated.
POINTS OF INTENDED MOVEMENT
Aboard ship and ashore, Aerographers frequently
must keep track of their own and other ships movements
and locations. This is done by plotting a ships Points of