Establishing Grid Patterns
lights and sirens from the sheriff's truck to
ward off boaters that came too close to SAR training
operations. After a few near run-ins, it was
decided that it is best to launch the boat right
away instead of going for the time saving factor.
Divers gather in
the cool lake for a final run through of the day's plan.
Charlie out with his search gear. Team members are
accustom to helping each other out with cumbersome search equipment. It is especially
beneficial in rough conditions.
accompanies a diver doing a last minute check of equipment.
Earl uses a
data scope to check the accuracy of the float
positioning within the grid pattern. The scope
gives information on range and bearing off
a target object.
practice using the laser range finder and data scope for pin pointing
accurate distance ranging and compass bearings of the markers making up
the grid pattern.
such as the laser range finder and the data scope
the team to become more efficient at setting up a
pattern using mini-mothers to effectively cover a search
a drawing of what a grid pattern looks like. The center circle is the
"point last seen" (PLS), with
other search areas expanded from that point. The center dot in each circle
represents the mini-mother,
and the circle itself is the area covered by the diver. The highlighted
areas within the pattern
show coverage overlapped by divers. Distances between placement of
mini-mothers vary depending
on visibility. Each diver carries a 100-ft
search line marked
in 10-ft increments that is used
to expand the circle pattern off the mini-mother.
demonstrates the advantage of bringing a beach umbrella to team
self-proclaimed "parasol divers" held a committee meeting
to discuss the addition of beach
umbrellas to the list of
mandatory search equipment.
A debriefing is
held after each training session. Team members give input on what worked
well for the operation, and what problems were encountered. Together the
team strives to find ways to improve so that actual call-outs proceed
smoothly and efficiently.
Photos by Dominique Evans-Bye