Pictorial Representation Of Various Track line Search Patterns..!
We have already seen the designations for various search patters:
Now lets discuss the various types of track line search patterns
1. TSN: In this T-trackline, S-single-unit, N-non-return. As seen from the above figure, the SRU takes a track line path as a single unit and does not end up at the departure point.The origination and destination points differ from each other with respect to search only.
2. TSR: In this T-trackline, S-single-unit, R-return or radar search. With reference to above figure, the SRU, as a single-unit, has a return path which ends up at the vicinity of the starting point.
3. Drifted Trackline: Represented by "d"---Drift compensated. If during Search & Rescue, say the weather is bad, which causes a "drift" for the unit, then it is obvious that the survivor to drift along with the current. Thus it is essential to know the direction of current and the drifted track of the survivor. Thus the track line search pattern is compensated with the drift pattern along the direction of drift.
Thus we have seen in detail regarding the "Track line search pattern". In next article, we will discuss on other types of search patterns.