SHIP’S MOVEMENT REPORT (MOVREP) AND POINTS-OF-INTENDED MOVEMENT REPORT (PIM)

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). SHIP’S MOVEMENT REPORT (MOVREP) AND POINTS-OF-INTENDED MOVEMENT REPORT (PIM) LEARNING OBJECTIVES: Discuss and define the terms used in the ship’s 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. MOVEMENT REPORT 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 ABBREVIATIONS 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. The 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 ship’s Points of 4-36