Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.
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Transcript of Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.
![Page 1: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/1.jpg)
Search Patterns
Search Patterns -- Rev: Nov 05
Boat Forces Center Coxswain “C” School
![Page 2: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/2.jpg)
Objectives
Given the following instruction state common terms used in Search and Rescue
Given basic navigation tools plot and execute both precision and drifting patterns
![Page 3: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/3.jpg)
References
National Search and Rescue Manual Vol I & II COMDINST M16120.5 series
U.S. Coast Guard Addendum to the National Search and Rescue Supplement COMDINST M16130.2 series
Boat Crew Seamanship manual COMDINST M16114.5 series
CG Boat Operations and Training Manual VOL I & II COMDINST M 16114.32 series
![Page 4: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/4.jpg)
Value
The boat Coxswain must be able to execute the search pattern correctly, so that lives and property in distress have the best possible chance for survival
![Page 5: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/5.jpg)
Coxswain Responsibility
Keep crew alert and attentive
Execute the search pattern correctly
SOMEONE'S LIFE MAY DEPEND ON IT
![Page 6: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/6.jpg)
Search Planning
Is necessary when the location of a distress object is not known, or time has passed since the objects position was last known
![Page 7: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/7.jpg)
SAR Planning
Where does SAR planning come from?
The Coast Guard Addendum to the National Search and Rescue Supplement COMDTINST M16130.2(series)
![Page 8: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/8.jpg)
SAR Addendum
The primary search planning & rescue operations guidance and policy manual
![Page 9: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/9.jpg)
Pattern Nomenclature
Datum
The most probable location of a search
object corrected for movement over time
![Page 10: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/10.jpg)
Pattern Nomenclature
Explanation of movement:
To locate datum, Two major forces need to
be considered:
Total Water Current
Leeway
![Page 11: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/11.jpg)
Pattern Nomenclature
Total water current (TWC)
•The sum of all water currents that might be The sum of all water currents that might be acting upon a search object in any given acting upon a search object in any given localitylocality
Sea Current
Wind Current
Reversing Tidal Current
River Current
Lake Current
Surf & Rip Current
The best information on TWC is obtained from a Datum Marker Buoy.
![Page 12: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/12.jpg)
Pattern Nomenclature
Leeway:
The movement through the water caused by winds blowing against the exposed surfaces of the search object. The more exposed area the object has the greater the wind force on the object
![Page 13: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/13.jpg)
Pattern Nomenclature
Search Leg:
The track line of the SRU involved in a search pattern, or the long leg along the track of a parallel or creeping line search
![Page 14: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/14.jpg)
Pattern Nomenclature
Cross Leg:
The connection between search legs of a parallel or creeping line search pattern
![Page 15: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/15.jpg)
Pattern Nomenclature
Sweep Width:
The corrected distance a SRU should be able to visually detect the search object on either side of the search leg
![Page 16: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/16.jpg)
Pattern Nomenclature
Track Spacing:
The distance between adjacent parallel legs
With the exception of the Sector search which will have a radius
![Page 17: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/17.jpg)
Pattern Nomenclature
Major Axis:
A bearing line used for the orientation of a rectangular search area from the center
![Page 18: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/18.jpg)
Pattern Nomenclature
Minor Axis:
A bearing line perpendicular to the major axis
![Page 19: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/19.jpg)
Pattern Nomenclature
Commence Search Point (CSP)
The location in the search area that the SRU starts the search pattern
![Page 20: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/20.jpg)
Pattern Nomenclature
Initial Response (PIW)
When searching for people in the water start a Sector Search ASAP:
• Speed 6 knots
• Track spacing: .1 NM
• 1 minute search legs
![Page 21: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/21.jpg)
Pattern Nomenclature
Search Area:
• The area most likely to contain the search object.
• Start with determining datum
• There are 7 different methods
![Page 22: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/22.jpg)
Corner Method
BLDG
37º19’00”N076º15’00”W
37º20’26”N076º13’57”W
37º18’17”N076º13’19”W
37º19’36”N076º12’05”W
Corner Method:In this method the latitude and longitude (or geographic features) of each corner of the search area are given
![Page 23: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/23.jpg)
Track line Method
BLDG
37º21’45”N076º14’22”W
37º20’44”N076º12’06”W
37º18’35”N076º12’15”W
Trackline Method:The latitude and longitude of the departure point, turns and destination are given with a specific width along the track
![Page 24: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/24.jpg)
Center Point CircularBLDG
37º21’00”N076º13’38”W
0.75 NMradius
Center Point, Circular Area:The latitude and longitude of the center point are given with a radius
![Page 25: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/25.jpg)
Center Point
BLDG
37º21’00”N076º13’38”W
Center Point, Rectangular or Square Area:The latitude and longitude of the center point are given with the direction of themajor axis and the length and width of the area
![Page 26: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/26.jpg)
Range and Bearing
BLDG
Range and Bearing to Center Point:The center point may also be designated bya range and bearing from a geographic landmark
140ºT2 NM
![Page 27: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/27.jpg)
Landmark Boundary
Landmark Boundary:Two or more landmarks are given asboundaries of the search area along a shoreline
BLDG
Point Comfort
3 NM
![Page 28: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/28.jpg)
Lat/Long Boundary
BLDG
Latitude/Longitude Boundary:The sides of the search area are oriented North-Southand East-West and the latitude and longitude of thesides are given
37º21’00”N
076º11’30”W
37º18’00”N
076º14’30”W
![Page 29: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/29.jpg)
Pattern Designations
First Letter Designates Pattern:
• “P” for Parallel
• “C” for Creeping Line
• “S” for Square
• “V” for Sector
• “T” for Track line
• “B” for Barrier
![Page 30: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/30.jpg)
Pattern Designations
Second Letter Designates Number of SRU’s:
– “S” for Single Search Unit– “M” for Multiple Search Units
Third Letter for Supplementary Information:
– “R” for Radar Coordination or Return– “N” for Non-Return to Starting Point
![Page 31: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/31.jpg)
Labeling Patterns
• Plotted in true
• Courses labeled in true and compass
• Turns labeled with DR’s and DR times
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“PS” Pattern
Parallel track search, Single unit use:
– Large area
– Position of search object approximate
– Uniform coverage desired
– Search leg parallel to major axis
![Page 33: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/33.jpg)
Plotting a “PS”
Search Area
1 ½ 0 1 2 3 4
N (True)
•Determine Search Area
![Page 34: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/34.jpg)
Plotting a “PS”
Search Area
1 ½ 0 1 2 3 4
Measure ½ track spacing in from the cornersMeasure ½ track spacing in from the corners
![Page 35: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/35.jpg)
Plotting a “PS”
1 ½ 0 1 2 3 4
Connect the marks to make the patterns size Connect the marks to make the patterns size
![Page 36: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/36.jpg)
Plotting a “PS”
1 ½ 0 1 2 3 4
CSP
Mark CSP, mark full track spacing and lay out cross legsMark CSP, mark full track spacing and lay out cross legs
![Page 37: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/37.jpg)
Plotting a “PS”
Lay out search legs, and erase every other cross leg
1 ½ 0 1 2 3 4
CSP
![Page 38: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/38.jpg)
Plotting a “PS”
Label a minimum of three legs a DR at all turns
1 ½ 0 1 2 3 4
CSPC- ºT/ ºCD- NM S- KN
C- ºT/ ºCD- NM
C-
ºT
ºCD
-
N
M
![Page 39: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/39.jpg)
“CS” Pattern
CREEPING LINE SEARCH, SINGLE UNITUSE:
– LARGE AREA
– UNIFORM COVERAGE DESIRED
– POSITION OF SEARCH OBJECT IS BELIEVED TO BE ON ONE END OF SEARCH AREA
– SEARCH LEGS PARALLEL TO MINOR AXIS
![Page 40: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/40.jpg)
Plotting a “CS”
Search Area
1 ½ 0 1 2 3 4
N (True)
![Page 41: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/41.jpg)
Plotting a “CS”
Search Area
1 ½ 0 1 2 3 4
N (True)
Measure ½ track spacing in from the cornersMeasure ½ track spacing in from the corners
![Page 42: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/42.jpg)
Plotting a “CS”
1 ½ 0 1 2 3 4
Connect the marks to make the pattern sizeConnect the marks to make the pattern size
![Page 43: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/43.jpg)
Plotting a “CS”
1 ½ 0 1 2 3 4
CSP
Mark CSP, measure full track spacing and lay out cross Mark CSP, measure full track spacing and lay out cross legslegs
![Page 44: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/44.jpg)
Plotting a “CS”
1 ½ 0 1 2 3 4
CSP
Lay out search legs and erase every other cross legLay out search legs and erase every other cross leg
![Page 45: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/45.jpg)
Plotting a “CS”
Label a minimum of three legs and a DR at all turns
1 ½ 0 1 2 3 4
CSP
C-
ºT/
ºC
D-
NM
S-
K
N
C-
ºT/
ºC
D-
NM
C- ºT ºCD- NM
![Page 46: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/46.jpg)
“VS” Pattern
SECTOR SEARCH, SINGLE UNIT USE:
– RELIABLE POSITION OF SEARCH OBJECT
– CONCENTRATED AT DATUM
– DATUM AT CENTER
– STARTS AND ENDS AT DATUM
– ALL TURNS ARE 120º TO THE RIGHT
– 1ST LEG IN DIRECTION OF DRIFT
![Page 47: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/47.jpg)
Plotting a “VS” Pattern
Plot datum and arc a full track spacing around it
1 ½ 0 1 2 3 4
![Page 48: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/48.jpg)
Plotting a “VS” Pattern
Lay down first track line, either 000 T or the direction of drift originating from datum
1 ½ 0 1 2 3 4
Datum
![Page 49: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/49.jpg)
Plotting a “VS” Pattern
Mark track spacing on either side of the line top and bottom
1 ½ 0 1 2 3 4
Datum
![Page 50: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/50.jpg)
Plotting a “VS” Pattern
Lay out the remaining track lines by connecting the marks
1 ½ 0 1 2 3 4
Datum
![Page 51: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/51.jpg)
Plotting a “VS” Pattern
Label three legs minimum
1 ½ 0 1 2 3 4
Datum
C- ºT/ ºC
D- NM
C-
º
T/
º
CD
-
NM
S-
KN
C- ºT
/ º
C
D- N
M
![Page 52: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/52.jpg)
“SS” Pattern
EXPANDING SQUARE SEARCH, SINGLE UNIT USE:
– SMALL AREA
– FIRST SEARCH LEG IS EITHER DIRECTION OF DRIFT OR TRUE NORTH
– ALL TURNS ARE 90º TO THE RIGHT
– TRACK SPACING DETERMINES 1ST AND 2ND LEG THEN ADD ONE TRACK SPACING EVERY OTHER LEG
![Page 53: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/53.jpg)
“Plotting a SS” Pattern
Plot datum and mark a full track spacing around it
1 ½ 0 1 2 3 4
![Page 54: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/54.jpg)
“Plotting a SS” Pattern
Lay down first search leg, either 000ºT or direction of drift, originating from datum
1 ½ 0 1 2 3 4
CSP
![Page 55: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/55.jpg)
Plotting a “SS” Pattern
Lay down search leg #2, 90º to the right of #1 for the distance of 1 track spacing
1 ½ 0 1 2 3 4
CSP
![Page 56: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/56.jpg)
Plotting a “SS” Pattern
Add one track spacing to determine length of search leg for search legs #3 and #4, plot #3 and #4
1 ½ 0 1 2 3 4
CSP
![Page 57: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/57.jpg)
Plotting a “SS” Pattern
Repeat for number of legs required
1 ½ 0 1 2 3 4
CSP
![Page 58: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/58.jpg)
Plotting a “SS” Pattern
Label all legs
CSP
1 ½ 0 1 2 3 4
C- ºT/ ºCD- NM
C-
ºT/
ºC
D-
NM
C- ºT
/ ºCD
- NM
C
-
ºT
/
º
CD
-
N
M
C- ºT/ ºCD- NM
C- ºT/ ºCD- NM
C- ºT/ ºCD- NM
C- ºT
/ ºCD
- NM
![Page 59: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/59.jpg)
“TSN” Pattern
TRACKLINE SEARCH, SINGLE UNIT,NON-
RETURN USE:
– ONLY INFORMATION AVAILABLE IS THE INTENDED TRACK OF TARGET
– START SEARCH AT CSP AND SEARCH THE INTENDED TRACKLINE OF THE SEARCH OBJECT
![Page 60: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/60.jpg)
“TSR” Pattern
TRACKLINE SEARCH, SINGLE UNIT,
RETURN USE:
– ONLY INFORMATION AVAILABLE IS THE INTENDED TRACK OF TARGET
– CSP IS OFFSET 1/2 TRACK SPACING FROM SEARCH OBJECTS INTENDED TRACKLINE
– SRU SEARCHES ONE SIDE THEN THE OTHER OF THE SEARCH OBJECT’S INTENDED TRACK
![Page 61: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/61.jpg)
Plotting a “TSR” Pattern
Using the target's intended track line, plot positions along the track at the origin of your search and any turns
1 ½ 0 1 2 3 4
![Page 62: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/62.jpg)
Plotting a “TSR” Pattern
Using 1/2 track spacing, arc a circle around each plotted position and at the first position, plot a line perpendicular to the intended track line
1 ½ 0 1 2 3 4
![Page 63: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/63.jpg)
Plotting a “TSR” Pattern
CSP will be located at one end of the perpendicular line, the finish is the other. From CSP lay down the search legs (note the turn)
1 ½ 0 1 2 3 4
CSP
![Page 64: Search Patterns Search Patterns -- Rev: Nov 05 Boat Forces Center Coxswain “C” School.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d175503460f949ecef6/html5/thumbnails/64.jpg)
Plotting a “TSR” Pattern
Label all legs
C- ºT/
ºC
D- NM S
- KN
C- ºT/ ºCD- NM
C- ºT/ ºCD- NM
C- ºT/
ºC
D- NM
1 ½ 0 1 2 3 4
CSP
C-
º
T
ºC
D-
N
M
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Review
What manual is the primary manual used for
search planning and rescue operations?
Coast Guard Addendum to the National SAR Manual
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Review
What is the definition of datum?
The most probable location of a search object corrected for movement over time
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Review
What is the definition of a search leg?
The track line of the SRU unit
OR
The long leg along the track of a parallel or creeping line search
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Review
What is the definition of sweep width?
The distance an SRU should be able to detect the search object on either side of the leg
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Review
What is CSP?
Commence Search Point:The location at which the SRU starts the search pattern
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Review
What search pattern is a “PS”?
Parallel Search patternSingle Unit
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Review
What search pattern is a “SS”?
Expanding Square Search patternSingle Unit
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Review
What search pattern is a “TSR”?
Track Line Search patternSingle UnitReturn
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Questions??