SAR Chapter 4

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(No Transcript)
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SAR
Chapter 4 Search Operations Planning
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SEARCH OPERATIONS PLANNING
1- Search Area has already been determined.
2- The SMC (Search and Rescue Mission
Coordinator) plans so that the Probability of
Success (POS) is maximized.
3- The SMC is required to know what the
Probability of Detection (POD) is.
4-9
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PROBABILITY OF DETECTION
1- Track Spacing (S)
2- Area covered during Search A V x
S x T
3- Sweep Width, corrected (W)
4- Coverage Factor (C) C W / S
5- Probability of Detection
4-11
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TRACK SPACING DEFINED
S
S
S
S
from 4-13
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Coastal First-Search Track Spacing
Good Conditions Poor Conditions Search
Object Wind lt 15 kts Wind ? 15 kts Seas lt 3
ft Seas ? 3 ft
PIW 0.1 NM 0.1 NM
Rafts Boats lt 15 ft 0.5 NM 0.2 NM
Boats gt 15 ft 1.0 NM 0.5 NM
gt 0.1 up to SRUs minimum ability to navigate
from 4-15
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from 4-17
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UNCORRECTED VISUAL SWEEPWIDTH
Small Boat SRU Visibility (NM) Searching For
1 3 5 10 15 20
0.2 0.2 0.3 0.3 0.3 0.3 Person in
Water 0.7 1.3 1.7 2.3 2.6 2.7 Raft 1 person 0.7 1.
7 2.2 3.1 3.5 3.9 Raft 4 person 0.8 1.9 2.6 3.6 4.
3 4.7 Raft 6 person 0.8 2.0 2.7 3.8 4.4 4.9 Raft 8
person 0.8 2.0 2.8 4.0 4.8 5.3 Raft 10 person 0.9
2.2 3.0 4.3 5.1 5.7 Raft 15 person 0.9 2.3 3.3 4.
9 5.8 6.5 Raft 20 person 0.9 2.4 3.5 5.2 6.3 7.0 R
aft 25 person 0.4 0.8 1.1 1.5 1.6 1.8 Power Boat
lt 15 ft 0.8 1.5 2.2 3.3 4.0 4.5 Power Boat
15-25ft 0.8 1.9 2.9 4.7 5.9 6.8 Power Boat
25-40ft 0.9 2.4 3.9 7.0 9.3 11.1 Power Boat
40-65ft 0.9 2.5 4.3 8.3 11.4 14.0 Power Boat
65-90 ft 0.8 1.5 2.1 3.0 3.6 4.0 Sail Boat 15
ft 0.8 1.7 2.5 3.7 4.6 5.1 Sail Boat
20ft 0.9 1.9 2.8 4.4 5.4 6.3 Sail Boat 25
ft 0.9 2.1 3.2 5.3 6.6 7.7 Sail Boat 30
ft 0.9 2.3 3.8 6.6 8.6 10.3 Sail Boat
40ft 0.9 2.4 4.0 7.3 9.7 11.6 Sail Boat 50 ft
from 4-19
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WEATHER CORRECTION FACTOR
Target Type Wind ? 15 kts Wind ? 25 kts
PIW, Rafts Boats lt 30 ft
0.5 0.25
Other Targets 0.9 0.9
from 4-21
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PROBABILITY OF DETECTION (POD)
1.0
0.8
0.6
PROBABILITY OF DETECTION
0.4
0.2
0 0.5 1.0 1.5 2.0
COVERAGE FACTOR
from 4-23
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EXPANDED SQUARE PATTERN
5 S
3 S
S
5 S
2 S
4 S
6 S
3 S
S
2 S
4 S
6 S
from 4-25
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SECTOR SEARCH PATTERN
CSP COMMENCE SEARCH POINT
START FIRST SEARCH
START SECOND SEARCH
ANIMATION IN PROGRESS !
from 4-27
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TSN PATTERN
Trackline, single-unit, non-return
A
B
C
from SSG 4-12 Fig. 4-6
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TMR PATTERN
Trackline, multi-unit, return
1/2 S
1/2 S
CSP COMMENCE SEARCH POINT
ANIMATION IN PROGRESS !
from SSG 4-12 Fig. 4-7
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TSR PATTERN
Trackline, single-unit, non-return
ANIMATION IN PROGRESS !
from SSG 4-13 Fig. 4-8
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TMN PATTERN
Trackline, multi-unit, non-return
B
A
ANIMATION IN PROGRESS !
from SSG 4-13 Fig. 4-9
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PS PATTERN
Parallel - single-unit
CSP
MAJOR AXIS
CENTER POINT
MINOR AXIS
ANIMATION IN PROGRESS !
from SSG 4-14 Fig. 4-10
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PM PATTERN
Parallel - multi-unit
ANIMATION IN PROGRESS !
from SSG 4-15 Fig. 4-11
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CS PATTERN
Creeping Line - single-unit
ANIMATION IN PROGRESS !
from SSG 4-16 Fig. 4-12
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HEADING CHANGE INTO WIND - DEGREES
FLAG ANGLE
0 15 30 45 60 90 120 135 150 165 180
WIND
0.0 .0 .0 .0 .0 .0 .0 .0 .0 .0 .0 .0 1.0 .0 .1 .
2 .2 .3 .3 .3 .2 .2 .1 .0 2.0 .0 .2 .3 .5 .6 .7 .
6 .5 .3 .2 .0 3.0 .0 .3 .5 .7 .9 1.0 .9 .7 .5 .3
.0 4.0 .0 .3 .7 1.0 1.2 1.4 1.2 1.0 .7 .3 .0 5.0
.0 .4 .8 1.2 1.5 1.7 1.5 1.2 .8 .4 .0 7.0 .0 .6
1.2 1.7 2.0 2.4 2.0 1.7 1.2 .6 .0 9.0 .0 .8 1.5 2
.1 2.6 3.0 2.6 2.1 1.5 .8 .0 11.0 .0 1.0 1.9 2.6
3.2 3.7 3.2 2.6 1.9 1.0 .0 13.0 .0 1.1 2.2 3.1 3.
8 4.4 3.8 3.1 2.2 1.1 .0 15.0 .0 1.3 2.5 3.6 4.4
5.1 4.4 3.6 2.5 1.3 .0 17.0 .0 1.5 2.9 4.1 5.0 5.
7 5.0 4.1 2.9 1.5 .0 19.0 .0 1.7 3.2 4.5 5.6 6.4
5.6 4.5 3.2 1.7 .0 21.0 .0 1.8 3.5 5.0 6.1 7.1 6.
1 5.0 3.5 1.8 .0
Table 4-5 SRU Leeway Correction
from SSG 4-18
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SeaScape
6
AUX Facility
Actual Disp.
tons
3000
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Max. Cont. Cruise
RPM Speed
knots Slip

Please wait (a few seconds), this slide may load
slowly on some systems!!
1/2 3-strand Nylon
300
Towline Type
Towline Length
feet
TOW Speed knots
0.0 1.8 3.6 5.4 7.2 9.0 10.8 12.6
14.4 16.2 18.0
1770 1890 1980 2100 2220 2340 2460 2580 2730
2850 3000
Max. RPM while towing
Cabin Cruiser
38 6
Type ________________ Waterline Length ____ feet
TOW Speed ___ knots
310
Steady Force 1 _________ pounds
5.2
500
Average Period _____ seconds Standard Shock
Force 2 ______ pounds
500
Standard Shock Force 2 ______ pounds
500
Double Braid 1.6 x 2 3 ______ pounds
(use only if applicable)
420
.84
Heading ____ x 3 4 ______ pounds
420
Adjusted Shock Force 4 ______ pounds
310
Steady Force 1 ______ pounds
730
Maximum Peak Force 1 4 ______ pounds
from SSG 5-23 Fig. 5-10
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