TMA and Bearing Rate question.

goldorak · 08-23-06, 02:00 AM

Ok, I've been trying to understand how to use the bearing rate parameter in the navmap ddi with the tma station.
Some things are not clear to me and I hope someone could clarify those issues.

Lets suppose my submarine is stationary and I detect a contact s1 at bearing 45. If over time the bearing rate of s1 is to the left that means s1 course is anything that takes it to the left of the bearing line 45 ?
Is this correct ? :hmm:
And if the bearing rate of s1 is to the right of bearing line 45 than its course can be any value that takes it to the right of the bearing line 45 ?
Do I understand correctly in this case how bearing rate works ? :hmm:

Now, lets suppose my submarine is on a certain course.
I detect s1 and find in the tma station a number of bearing lines that form an x.
So basically without maneuvering I can't determine if I'm on a lag or lead course with the contact.
Can the bearing rate of the contact help me descriminate between lag and lead course without me having to maneuver ? :hmm:
So for instance if I'm on a course of 90 and find that the bearing rate of the contact s1 is towards the left can I surmise that I'm on a lag course with s1 ?
If on the other hand the bearing rate of s1 is towards the right can I surmise that I'm on a lead course with him ?

Any explanation is welcome.

08-23-06, 02:00 AM	#1
goldorak Admiral Join Date: Apr 2005 Posts: 2,320 Downloads: 0 Uploads: 0	TMA and Bearing Rate question. Ok, I've been trying to understand how to use the bearing rate parameter in the navmap ddi with the tma station. Some things are not clear to me and I hope someone could clarify those issues. Lets suppose my submarine is stationary and I detect a contact s1 at bearing 45. If over time the bearing rate of s1 is to the left that means s1 course is anything that takes it to the left of the bearing line 45 ? Is this correct ? :hmm: And if the bearing rate of s1 is to the right of bearing line 45 than its course can be any value that takes it to the right of the bearing line 45 ? Do I understand correctly in this case how bearing rate works ? :hmm: Now, lets suppose my submarine is on a certain course. I detect s1 and find in the tma station a number of bearing lines that form an x. So basically without maneuvering I can't determine if I'm on a lag or lead course with the contact. Can the bearing rate of the contact help me descriminate between lag and lead course without me having to maneuver ? :hmm: So for instance if I'm on a course of 90 and find that the bearing rate of the contact s1 is towards the left can I surmise that I'm on a lag course with s1 ? If on the other hand the bearing rate of s1 is towards the right can I surmise that I'm on a lead course with him ? Any explanation is welcome.