Yes exactly. If someone wants to save time by using the hydrophone tracker to get the 4th 'imaginary' bearing then he/she could work this way.
When ownship is constantly moving, the plot this program provides can be deemed as a relative motion plot, which is also useful in a Maneuvering Board if someone wants to try out the historical 2x3 bearing method (
https://www.subsim.com/radioroom/sho...d.php?t=240739), but it could be more time consuming too.
Anyways just some of the many ways to do TMA.