Questions about graphical information

[nukkxx5058]

Hi, who could explain what are the various colors in the pic below ?

a)the white and green bars above and below my ship ?
b) the orange CAV sign ?
c) the yellow, blue and red short bars around my contact icon ?
d) the 2 red circles, light red and dark red around my ship ?

Thanks in advance ...

[RoryAndersonCDT]

Your ship:
White bar is fuel
Green bar is damage % (turns to orange then turns to red as you get more damaged, contact's top bar is orange for this reason)
(if you were on fire)
red is fire damage %
(if you were flooding)
blue is flooding damage %

Same for the suface contact (except you don't know their fuel, and your information is from BDA estimates)

Pink circle is AA range
Red circle is Surface range
Green Circle is Subsurface range


Orange CAV means you are CAVitating, extra noisy speed. you can be heard from long range on passive sensors when you are cavitating.

[nukkxx5058]

Wow !! Thank you, very useful !

[RoryAndersonCDT]

There are also sensor range circles

White is air/surface radar, american electronically steered sensors each take a arc so it looks like an american ship is a hexagon.
Yellow is surface radar
Green? is active subsurface sonar.
those light green disks around subs and some ships are convergence zones, essentially due to the physics of the ocean you can hear things really far away.

You only see these sensor rings if the sensor is operational and active.

[nukkxx5058]

OK.
What are convergence zones ? Read about CZ's in the manual but no idea what it can be [&:]

[Pergite!]

https://www.google.com

[RoryAndersonCDT]

ORIGINAL: nukkxx

OK.
What are convergence zones ? Read about CZ's in the manual but no idea what it can be [&:]

They are pretty complicated. I do sonar and acoustics at my day job so let me tell you there is a very complicated answer!

Basically the acoustic impedance of seawater can change drastically based on the physical properties of the seawater, things like the temperature, pressure and salt concentration. The sea is filled with different layers of different properties at different times and seasons. These layers have different acoustic impedance at different sound frequencies. So sometimes the sea is set up in such a way along with refraction and reflection of the sound energy propagates (moves further) than you would usually think if you didn't consider the physics of these different layers in the sea.

Usually the sea has a very distinct vertical profile in a number of the physical properties. In some ways the sea naturally acts like a useful lens for certain frequencies of sound and we exploit this fact to put torpedoes on goblins!

Also the biggest changes in acoustic impedance would occur at the air-sea interface and the sea-bottom interface, third would be "the layer" the thermocline. These interfaces are very significant! [:D]

[nukkxx5058]

yep, it looks complex:-)
But how can I use information about CZ in the game ?

[RoryAndersonCDT]

The wide green regions are regions you cannot hear as well. Your max sonar range is within the widest green disk.