[getbac]

Originally Posted by Sniper297

This is an FAQ, so I made a new picture;



The outer ring has nothing to do with radar, it's the average distance a lookout will see something the size of a surfaced submarine. Sometimes they'll see you further away, sometimes you can get in closer than the max circle, it depends on a variety of factors. Seeing a big ship on the horizon is a lot easier than seeing smaller ships and boats, that's why the outer ring doesn't go all the way to the horizon - a WWII sub was a boat, a small target difficult to see more than 4 to 5 miles away.

The red half circle is the area where the sonar "pings" have a good chance of reflecting from a submerged sub strong enough to be detected. The yellow "3/4" circle is just listening for propeller cavitations and other noises like machinery and loading torpedoes, which is why there's a "SILENT RUNNING" option. Depending on how good the crew is, how fast you're going, how deep you are, and how far from the center of the circle you are, they might or might not hear you inside that semicircle.

The reason for the cutout at the back is "baffles", sound interference from the ships own machinery and propeller noise.

WAY AWSOME.... copy/paste as we speak... thanx