SUBSIM Radio Room Forums - View Single Post - Time needed to locate convoy with hydrophones?

jarlemag · 04-21-19, 09:48 AM

Thanks for the very detailed post. A good start!

To further specify the question, the expectations for the "fix" I had in mind is one good enough to plan an intercept course.

The motivation for asking this question is the disagreement between people who say, "Find the convoy's position and course by hydrophones first, then plot an intercept course" and those who say "forget about determining course, just go flank speed on the surface in the direction of the convoy".

In my experience, visual contact can usually be made within 15 minutes of travelling flank speed on the surface on the initial contact bearing, with a dive to correct course halfway, (after about 5 km), while 15 minutes is also commonly cited as the "minimum time" for a triangulation by the 4 bearings method. Therefore, I'm currently leaning towards the first method (immediate flank speed run on the surface.)

04-21-19, 09:48 AM	#3
jarlemag Watch Join Date: Nov 2013 Posts: 22 Downloads: 6 Uploads: 0	Thanks for the very detailed post. A good start! To further specify the question, the expectations for the "fix" I had in mind is one good enough to plan an intercept course. The motivation for asking this question is the disagreement between people who say, "Find the convoy's position and course by hydrophones first, then plot an intercept course" and those who say "forget about determining course, just go flank speed on the surface in the direction of the convoy". In my experience, visual contact can usually be made within 15 minutes of travelling flank speed on the surface on the initial contact bearing, with a dive to correct course halfway, (after about 5 km), while 15 minutes is also commonly cited as the "minimum time" for a triangulation by the 4 bearings method. Therefore, I'm currently leaning towards the first method (immediate flank speed run on the surface.) Last edited by jarlemag; 04-21-19 at 01:17 PM.