Page 587 - The ROV Manual - A User Guide for Remotely Operated Vehicles 2nd edition

586 CHAPTER 21 Practical Applications
Boys Girls
Boys
Girls
Witness #2
From Pactola Boys campground
FIGURE 21.21
Witness #2 version.
Rock island
FIGURE 21.22
Witness #3 version.
Boys
From
western Girls end of reservoir
Boys
Girls
Rock island
Witness #3
Witness #3 was the rear passenger of PWC #1 (girls). She stated that the boys saw them coming and turned around to give chase (Figure 21.22). The driver of PWC #2 (boys) did a radical left turn in front of PWC #1, throwing the victim into the path of the oncoming vehicle.
Witness #4 was the driver of PWC #1 (girls). She stated that the boys saw them coming and turned around to give chase (as with witness #3). The driver of PWC #2 (boys) did a radical and complete 360 turn in front of PWC #1, throwing the victim into the path of the oncoming vehicle (Figure 21.23).
There was a previous search with side scan sonar of the search area that turned up a large num- ber of possible targets—none of which matched the shape of the victim.
The fire chief in charge of the operation was an experienced professional in the public safety field. The second search was much more detailed due to the tedious nature of the bottom conditions. A tripod-mounted, mechanically scanning sonar system was used, deployed from a pontoon boat with a four-point mooring. The fire chief had no other choice but to assume that the search area was located in the northeastern quadrant from the rock island in the lake. He properly determined that the search lines needed to start at the island and proceed in an easterly direction until the allotted time for the search was expended. North/south search patterns were instituted proceeding in an easterly direction.