Bearings? True or relative on target contacts?

[r6751]

When the hydrophone or sightings are announced, we need to know if it is true (compass) or relative. (from the bow of the sub) Is 45 degrees NEast or the angle off our bow??

[Dewgle]

IIRC, the vanilla call-outs are all in clock numbers
"Kriegsschiff um 1 Uhr" or something like that.

You wouldn't be using any mods by chance are you? Mods like the Real Navigation mod for instance? Here's a snippit from the description section of the Real Navigation mod which explains the call-outs.

Originally posted by Real Navigation Mod Description:

6. Direction indicator for contacts:
The "contact" symbol on the right-hand side shows the current visual or listening contacts in the immediate vicinity.
Now you can see the direction of a contact in degrees (from the submarine).

[Davinci]

Originally posted by McDewgle:

IIRC, the vanilla call-outs are all in clock numbers
"Kriegsschiff um 1 Uhr" or something like that.

I have only heard these rarely , and it usually has to do with destroyers.

It would be a nice feature to have in game for all ship sightings.

[wolf310ii]

Bearing = relative to bow
Heading = true to compass

[Dewgle]

Originally posted by wolf310ii:

Bearing = relative to bow
Heading = true to compass

A rare and precious opportunity where I know more than wolf310 xD

But that is not accurate to nautical terminology. A 'heading' indicates direction of travel, relative to compass. A 'bearing' indicates a direction of interest. This can be relative or true. I.E. a sailor could call out a bearing to target in relative degrees or true degrees.

https://steamcommunity.com/sharedfiles/filedetails/?id=2866670466

[wolf310ii]

Originally posted by McDewgle:

Originally posted by wolf310ii:

Bearing = relative to bow
Heading = true to compass

A rare and precious opportunity where I know more than wolf310 xD

Well, you got me here, i was unprecise.

A 'heading' indicates direction of travel, relative to compass.

Heading is direction of "facing" or the the direction the bow is pointing, wich can be different from the course, the direction of travel.
If the heading is 0° at 5kt and there is a current going 90° at 5kt, the direction of travel is 45°.

In context, the callout from the the hydrophone is (or should be) relative bearing, the hydrophone room had a gyrocompass repeater, but at the moment im not sure if it was conected to the hydrophone.
The watch on the conning tower would use points (1 point=11,5°) or quadrants (Steuerbord voraus, Steuerbord querab, ect.) or both (Steuerbord, zwo Strich (2 points) achterlich querab)
With directions relative to the bow, everyone knows where to look at, without checking the compass first.

True bearing is used when the actual heading is irrelevant or true north is more important, like map work, shooting stars or talking about destinations

[urseus]

I never quite understand the different rings on the hydraphone. Not that they are easy to read anywya.

I thought each ring corresponded to a distance setting close is this ring and it says under 10k etc but they seem to be something else. And it's kind of annoying when you can hear something but your guy can't so it doesn't get plotted

[Dewgle]

Originally posted by urseus:

I never quite understand the different rings on the hydraphone. Not that they are easy to read anywya.

I thought each ring corresponded to a distance setting close is this ring and it says under 10k etc but they seem to be something else. And it's kind of annoying when you can hear something but your guy can't so it doesn't get plotted

https://steamcommunity.com/sharedfiles/filedetails/?id=2700347471
https://steamcommunity.com/sharedfiles/filedetails/?id=2700347778
The outer ring is a relative bearing compass. The other colored rings are frequency rings to be used in conjunction with the tuning dial. Using the frequency cutoff dial I found a way to tell if the target is near or far and I found a way to tell if the target is moving towards me or away from me.

[urseus]

I always thought the tuning dial was like, extra hone in listen. I always end up using it to bracket in the direction of the sound while i go from low to high.