Some random questions -- pretty basic stuff

Originally Posted by BROJD

1) Am I safe from sonar/ASDIC (passive and listening) while on the surface? I assume that the surface wave action masks the sounds of my Type VIIB, but I got scared when executing a high speed end-around on an escorted convoy.

2) How do I know when the ASDIC pings have acquired me?

3) How accurate/useful is the sub-silhouette that shows my noise-level? I was running with silent running, 10 degrees right rudder, at 1 knot, and it turned brown on me. What was making noise?

4) Related question -- does using full rudder at all affect my acoustic signature? Or does it just slow me down when I'm trying to sneak away?

5) What's the purpose of renown? I know I can spend it for new crew and upgrades, but is there anything else it's used for? Is there any reason to "save" it or should I spend like a drunken sailor for any upgrades that help?

1) Sonar and ASDIC will not detect on the surface, so you should be safe from them. Visually, you might be detected. When radar comes along for the Allies, the surface is not safe.

2) You will hear the pings and you should also get a message "Sir, the enemy is pinging us."

3) The little sub that changes color is very accurate. Were you in Silent Running during the situation you described? Silent Running helps.

4) I've read that you should not go over 10-degrees rudder when you're trying to get away. Therefore, full rudder probably makes more noise.

5) Renown is neccessary for upgrades. Save it and spend it wisely. You'll earn Renown based on your patrols, I let it accumulate until new upgrades are available. Upgrades are important with the exclusion of Radar in my opinion. So far I've used FuMO-29 and FuMO-30 Radar and they're not worth a dime. Also, I never waste renown on crew; I always add the cheapest crew.