688i mission editor problem: Transit & Transit Search

[PINK PANTHER]

I have 688i Hunter/Killer, Fleet Command, Sub Command.
In mission editor section of the user manuals ,all mention that when you set up the object properties,
there are some operational tactics for surface vessels, submarines, and aircraft.Among the tactics,
I can't recognize what different between Transit and Transit Search.


Transit：Assign the craft a travel route. The craft travels from waypoint
to waypoint, modifying its course, speed and depth as indicated.After arriving at the last waypoint,
the craft maintains the assigned course, speed and depth indefinitely.


Transit Search：
Assign the craft a travel route. The craft searches for your own ship
as it travels from waypoint to waypoint, modifying its course, speed and depth as indicated.
After arriving at the last waypoint, the craft maintains the assigned course, speed and depth indefinitely.

Red color indicates where the difference is.

Yes, the craft searches, and then?Is it helpful for the player?
Does it take any action after search?

Thanks.