JP 3-50 National Search and Rescue Manual Vol I - US Navy

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APPENDIX E. COORDINATED SEARCH PATTERNS A. Coordinated Patterns This appendix provides OSCs with a guide for planning and executing coordinated search patterns. Teaming an aircraft with a vessel takes advantage of each SRU's best features. Aircraft provide rapid coverage of the search area from a good search platform. Vessels may provide better navigation, unless the aircraft is equipped with sophisticated navigational aids such as INS, and may be able to quickly rescue a survivor sighted from the aircraft. B. Coordinated Search Symbology The following symbols and definitions are used in computing and discussing aircraft search tracks. Al is the search area length. Aw (search area width) is the sum of one searchleg and one track spacing (Aw = L + S). Awf is the search area width for faster aircraft in CMCS pattern. Aws is the search area width for slower aircraft in a CMCS pattern. C (course) is the intended path of travel by an SRU. GS (ground speed) is the speed of an aircraft relative to the earth's surface. H (heading) is the horizontal direction in which an SRU is pointing. L (searchleg or searchleg length) is the sum of the searchleg straightaway (y) and the search craft's turn diameter (TD). Subscripts further define L. L1 is the searchleg with the highest headwind component. L2 is the searchleg with the highest tailwind component. S (track spacing) is the distance between adjacent searchlegs. t1 is the time required for a search aircraft to fly one-half of the straightaway length (Y1) of the searchleg with the highest headwind component (L1). t2 is the time required for a search aircraft to fly one-half of the straightaway length (y2) of the searchleg with the highest tailwind component (L2). t3 is the time required for a search aircraft to fly the full
straightaway length (x) of the crossleg between two search areas. TAS (true air speed) is the speed of an aircraft relative to the airmass it is in. TD (turn diameter) is the diameter of a turning circle executed at a constant rate of turn, constant angle of bank (aircraft), or constant angle of rudder (vessel). Tr (track) is the actual path of travel by an SRU. TTT (time to turn) is the clock time specified for a searchcraft to begin a turn, usually onto the crossleg. V (velocity or speed) denotes either rate of motion (speed), or both rate and direction of motion (velocity). Subscripts further define V. V1 is the groundspeed of an aircraft flying on L1. V2 is the groundspeed of a searching aircraft flying on L2. V3 is the groundspeed of a searching aircraft flying on the crossleg between two searchlegs. Va is aircraft TAS. Vs is surface craft velocity. X is the distance the vessel travels from the time the aircraft flying on searchleg L1 is above the vessel to the "time to turn" (TTT) onto crossleg. Time required = t1. x is the straightaway length of the crossleg. Y is the distance the vessel travels from the time the aircraft flying on searchleg L2 completes its turnoff of the crossleg until above the vessel. y is the straightaway length of the searchleg. Y1 is the straightaway length of the searchleg with the highest headwind component. Y2 is the straightaway length of the searchleg with E-1
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JOINT PUB 3-50 NATIONAL SEARCH AND
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e. Update of information and graph
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PREFACE Volume I: National Search a
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. Joint Pub 3-50.1/COMDTINST M16120
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ABBREVIATIONS/ACRONYMS A Search Are
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COSPAS Cosmicheskaya Sistyema Poisk
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FIS Flight Information Service FIXe
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MAC Military Airlift Command MARAD
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PMC Parallel Multiunit Circle PMN P
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TFR Temporary Flight Restriction TL
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CHAPTER 1. SAR SYSTEM AND ORGANIZAT
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consolidates the information needed
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} Figure 1-2. United States Search
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Commander, 9th Coast Guard District
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131 The SAR Coordinator SC | SMC |
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1. The shore station nearest the re
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(3) Determine the mission-ready sta
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. A Wreckage Locator File with all
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directories, SMC planning and docum
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on scene conditions advising the SM
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lifeboats or liferafts, oil slicks,
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CHAPTER 2. SAR ORGANIZATIONS, AGENC
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Ship SAR Manual (MERSAR) contains p
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messages addressed to CIRM Roma. 2.
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for SAR. 1. National Oceanic and At
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snowmobiles, scuba teams, and track
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surface SRUs can arrive. a. SAR hel
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3. Maneuverability is necessary for
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has an ailing seaman, and can rescu
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manning and configuration. Larger v
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physical training, skill in communi
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special qualifications desirable in
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Overseas Region the Alaskan CAP Win
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platform. Also of use for SAR are c
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3130.16 series. The SMC should de-a
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continental U.S. and at offshore lo
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the potential for recording data wi
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other craft or radio stations: 1. A
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EPIRBs. 9. 27.065 kHz (Citizens Ban
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vessels) will be required to carry
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. Non-compliance with FCC Rules and
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9. SART. 10. MF DSC, used to initia
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4. FAA Domestic Teletype Networks,
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3023 kHz (USB), 123.1 MHz, and 282.
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3. 2638 kHz, all areas. 4. 2738 kHz
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SRUs and agencies. A search action
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2. Rescue Area f. SRUs on scene a.
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extended time, a Notice to Mariners
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The receiving and recording of info
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case. The SMC is often automaticall
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any source. b. There is suspicion t
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The craft's float or flight plan is
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Figure 4-1. Water Chill Without Ant
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s Figure 4-2. Wind Chill Graph - Eq
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445 Weather A. Weather may limit SA
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451 Uncertainty Phase An Emergency
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471 PRECOM A. PRECOM search contact
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the objective during their normal o
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effective search plan. The plan may
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D. Other SAR planning models, such
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1. The aircraft glide area shown in
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Figure 5-3. Vector Plots of Surface
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TABLE 5-1. Parachute Drift Distance
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the search object has, the greater
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B. Sea Current (SC) is the residual
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Figure 5-6A. Wind Current - North L
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large lake can vary with season, we
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5. Other on scene observations can
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520 SEARCH AREA Figure 5-8. Minimax
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Figure 5-9. Drift Error by Minimax
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DRe to determine SRU error (Y = Fix
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Figure 5-11. Search Areas - Moving
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E. When only a datum area exists, s
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SRUs are dispatched next. Supplemen
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B. POD can be increased by decreasi
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C. Visual sweep widths are determin
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TABLE 5-6. Visual Sweep Width Estim
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9. Fatigue. Degradation of detectio
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Table 5-8. Height of Eye vs. Horizo
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6. Sweep widths for Side-Looking Ai
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TABLE 5-11a. Sweep Widths for Forwa
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Sweep widths should be approximated
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TABLE 5-14. Environmental Limitatio
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Figure 5-19. Maritime Probability o
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again, unless it is determined furt
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c. This track spacing may exceed th
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a. E-7 corners 23 15N 74 35W to 23
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E. Orienting Search Areas Search pa
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Figure 5-21. Typical Assignments fo
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The major pattern characteristic is
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Figure 5-26. Figure 5-27. 3. Parall
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Figure 5-31. Figure 5-32. D. Creepi
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area, they must fly their individua
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for large objects in well-defined s
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I. Homing Patterns (H) are used to
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completed, the initial area, not th
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Pattern Name SRU required Remarks T
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560 PLANNING OF ON SCENE COORDINATI
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NOTAM for non-SAR aircraft to remai
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described as previously discussed,
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procedures for aircraft SRUs should
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1. Where sea current, tidal current
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eturn to base. E. Continuous attent
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to minimize clutter. While this is
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642 Aircraft Search A. Overwater Se
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one leg to the next without the nee
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everses course. The course on which
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645 Scanning Figure 6-5. Search for
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Figure 6-6. Marine SRU Crossleg Fig
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a. The effects of time on task vary
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Figure 6-9. Range Estimation 6-12
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5. Scanners forced to look into the
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645 Search Target This effect can b
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Figure 6-12. Effects of Altitude on
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Figure 6-16. Factors in Radar Detec
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C. Multisensor search is either mul
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Figure 6-18. INS Pattern for Reloca
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1. Initial sighting--Drop smoke and
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altitude to make the sighting repor
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lue and white checkered flag), or s
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Rescue planning involves dispatchin
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pararescue teams can place medicall
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Speed and ability to sustain surviv
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1. Sustaining life. Immediately upo
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other factors affecting rescue. 742
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Figure 7-2. Helicopter Racetrack Es
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2. Rations packs - concentrated or
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753 Rescue by Ship diverting or dis
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than 6 feet (2 meters) apart, inter
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800 General 810 Aircraft Searches 8
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TABLE 8-1. Inland Probability of De
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strength of the wind and steepness
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the area of greatest turbulence, an
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823 Air/Ground Coordination An SMC,
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2. A team leader is responsible for
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Figure 8-4. PM Search Pattern for L
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the track spacing would be 100 feet
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1. Scale 1:24,000 is the best for l
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Figure 8-6. Ground Search Area Plot
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unlaundered carefully preserved sce
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5. As indicated previously, it is i
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debriefing, transport to a delivery
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complete mental collapse due to the
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medical training, qualifications, a
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1000 General 1010 Mission Suspensio
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accept that the search cannot conti
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used for statistical analysis, syst
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Each RCC maintains a chronological
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aircraft that they are near the sce
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(day or night), date, search area a
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1200 General 1210 Domestic Framewor
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G. 46 USC 2304 requires a master or
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differing requirements of each coun
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RCC, which will plan the search and
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commander and the Department of Sta
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1240 PRIVATE PROPERTY 1241 Entering
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CHAPTER 13. SAR MISSION PUBLIC RELA
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equests for information, and use ne
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1323 News and Photograph Pool A new
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GLOSSARY A-probability: Percentage
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Awareness Range: Distance at which
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3. Ratio of sweep width to track sp
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Page 327 and 328: Inadvertent Alarm Rate: Ratio of in
Page 329 and 330: Military Assistance to Safety and T
Page 331 and 332: Probability of Detection (POD): The
Page 333 and 334: Search Action Plan: Message, normal
Page 335 and 336: SRU Error (Y): Search craft error b
Page 337 and 338: composed of significant assigned co
Page 339 and 340: Hydrographic Office. H.O. Pub 100.
Page 341 and 342: Emergency Response Institute. Helic
Page 343 and 344: University of Hawaii. Studies on Hu
Page 345 and 346: List of Ship Stations. Geneva, Swit
Page 347 and 348: 1. POLICY APPENDIX A. NATIONAL SEAR
Page 349 and 350: use of wire and radio facilities fo
Page 351 and 352: Area for the advantageous execution
Page 353 and 354: maintain liaison with and support e
Page 355 and 356: Figure A-1. United States Search an
Page 357 and 358: air SAR units, and provide guidance
Page 359 and 360: far as possible, afford adequate me
Page 361 and 362: which shall act in close and contin
Page 363 and 364: established by the Convention on In
Page 365 and 366: December 12, 1986 Agreement Concern
Page 367 and 368: outstretched to each side. j. Inver
Page 369 and 370: Black or white smoke bursts, 10 sec
Page 371 and 372: Figure C-2. Surface-Air Visual Sign
Page 373 and 374: Figure C-5. Panel Signals C-5
Page 375: to the 26-foot sailboat row to obta
Page 379 and 380: These patterns are variations of th
Page 381 and 382: c. In the CSR pattern, the actual c
Page 383 and 384: adjacent to it, are the following:
Page 385 and 386: d. If the shaded portions of Figure
Page 387 and 388: 3. Relative motion pattern solution
Page 389 and 390: through the tail of the ship's vect
Page 391 and 392: Request the aircraft to report amou
Page 393 and 394: information, TACAN/DME ranging disp
Page 395 and 396: APPENDIX F. TEMPORARY FLIGHT RESTRI
Page 397 and 398: 4. Normally, incidents in an aircra
Page 399 and 400: LIST OF EFFECTIVE PAGES Subject Mat
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JP 3-50 National Search and Rescue Manual Vol I - US Navy

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