Destroyer's detection circles

Greystone · 03-03-11, 09:17 PM

I was submerged and maneuvering between two destroyers recently and it reminded me of a question I've been meaning to ask. Those various circular lines around the destroyer on the nav map; I know about the angle projected out from behind the escort, about 45 degrees, ("behind the escort's baffles") where their sound detection is lost, but what's the significance of the others?
1) The spade-like projection right in front of the ship; what's it signify?
2) The smaller, closer circle around the ship....?
3) The larger, outer circle around the ship...?
Thanks for the help!

03-03-11, 11:02 PM

Quote:

Originally Posted by Greystone

1) The spade-like projection right in front of the ship; what's it signify?

I believe it is the detection zone of their ASDIC

Quote:

Originally Posted by Greystone

2) The smaller, closer circle around the ship....?

My guess would be visual range

Quote:

Originally Posted by Greystone

3) The larger, outer circle around the ship...?

My guess would be hearing range.

Anyone else?

Frontier359 · 03-04-11, 12:05 AM

My guess would be (from largest to smallest): Passive hydrophone, visual spotting, active pings. Not totally sure.

At some point they'll start using radar too; so that may be one of them.

I haven't played stock SH3 in so long, I forgot it even had such map aides.

desirableroasted · 03-04-11, 04:52 AM

The outer is the visual range; the inner one with the triangle at the stern of the warship denotes its passive acoustic equipment.

The visual circle is a guideline for "normal conditions," so sea state, fog, day/night, affect when/if the escort will actually see you visually.

In the same way, in the acoustic circle, your silence, your depth and your angle in relation to the escort will determine your acoustical "visibility."

Whether you play stock or GWX, it is worth reading the GWX Manual Appendix B thoroughly to understand how things work within the acoustic circle, as they change over the course of the war.

sharkbit · 03-04-11, 08:23 AM

When the escort is equiped with radar, there will be another circle as well.

Also, the circles will change size depending on if the escort is equipped with better sonar/radar.

Kinda unrealistic methinks.
Is there any way to make them disappear?

03-03-11, 09:17 PM	#1
Greystone Sparky Join Date: Apr 2007 Location: San Francisco area Posts: 155 Downloads: 135 Uploads: 0	Destroyer's detection circles I was submerged and maneuvering between two destroyers recently and it reminded me of a question I've been meaning to ask. Those various circular lines around the destroyer on the nav map; I know about the angle projected out from behind the escort, about 45 degrees, ("behind the escort's baffles") where their sound detection is lost, but what's the significance of the others? 1) The spade-like projection right in front of the ship; what's it signify? 2) The smaller, closer circle around the ship....? 3) The larger, outer circle around the ship...? Thanks for the help!

03-04-11, 12:05 AM	#3
Frontier359 Sailor man Join Date: Feb 2011 Posts: 44 Downloads: 12 Uploads: 0	My guess would be (from largest to smallest): Passive hydrophone, visual spotting, active pings. Not totally sure. At some point they'll start using radar too; so that may be one of them. I haven't played stock SH3 in so long, I forgot it even had such map aides. __________________ Let's Play SILENT HUNTER 3

03-04-11, 04:52 AM	#4
desirableroasted Grey Wolf Join Date: Feb 2006 Location: In the mountains, now. On the edge of the sea before. Posts: 933 Downloads: 47 Uploads: 0	The outer is the visual range; the inner one with the triangle at the stern of the warship denotes its passive acoustic equipment. The visual circle is a guideline for "normal conditions," so sea state, fog, day/night, affect when/if the escort will actually see you visually. In the same way, in the acoustic circle, your silence, your depth and your angle in relation to the escort will determine your acoustical "visibility." Whether you play stock or GWX, it is worth reading the GWX Manual Appendix B thoroughly to understand how things work within the acoustic circle, as they change over the course of the war. __________________ "Well, now, that's true... the IXC is a bit of a chick magnet..but you really can't beat the VIIB for off-road fun."

03-04-11, 08:23 AM	#5
sharkbit The Old Man Join Date: Apr 2008 Location: Denver, CO Posts: 1,529 Downloads: 334 Uploads: 0	When the escort is equiped with radar, there will be another circle as well. Also, the circles will change size depending on if the escort is equipped with better sonar/radar. Kinda unrealistic methinks. Is there any way to make them disappear? __________________ “Prejudice is blind. There will always be someone who says you aren’t welcome at the table. Stop apologizing for who you are and using all your energy trying to change their minds. Yes, you will lose friends, maybe even family. But you will gain your self-respect. You will know your worth. Once you have that, nothing can stop you.”