Thursday, September 9, 2010
SAR Vessel Patrolling
| Sometimes, SAR
patrol
vessels remain stationed at their base. Other
times, they may be out patrolling or being multi-tasked
for other purposes. It is important to understand the implications
of the SAR
vessel position when an emergency call comes in. Various
GIS tools
within MARIS
have been used to examine the relationship between the Patrol
vessels position and transit times to incidents. This figure
shows various shadings corresponding to increasing transit
time bands (to historical
incident
distributions) for a
vessel patrolling of the East coast of Prince Edward Island.
Given the historical distribution of incidents, the center white area
represents the minimium average distance to all incidents.
Assuming the distribution of incidents doesn't
change drastically in the future, positioning the SAR vessel in this centre white area
would reduce the distance the vessel has to travel to an incident.
In the pink zone, the expected transit time
would be somewhat longer based on the average of all incidents,
and so on. |
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