Depth under keel

[seafarer]

Originally Posted by TomcatMVD

I know, but, is it realistic to have an Atlas Echolot that pings and not to have a sonar? I don't know, just asking.

The type VIIC had the S-Gerät, which was essentially active sonar with a range of around 4000m. One of the reasons the VIIC is bigger (control room is longer) then the VIIB is to accommodate the transmission sound head.

As far as I've ever been able to determine, nothing smaller, nor designed earlier, then the VIIC had active sonar.

The echolot is a much smaller device and sends out only a low-power pulse. Even then, I'm not sure if the smaller boats (like the type II's) had both the shallow and the deep water versions - I suspect they only had the shallow water versions for the same reasons - space for the higher-power transducer head.

[TomcatMVD]

Originally Posted by seafarer

The type VIIC had the S-Gerät, which was essentially active sonar with a range of around 4000m. One of the reasons the VIIC is bigger (control room is longer) then the VIIB is to accommodate the transmission sound head.

As far as I've ever been able to determine, nothing smaller, nor designed earlier, then the VIIC had active sonar.

The echolot is a much smaller device and sends out only a low-power pulse. Even then, I'm not sure if the smaller boats (like the type II's) had both the shallow and the deep water versions - I suspect they only had the shallow water versions for the same reasons - space for the higher-power transducer head.

Great post! Thank you, I feel better now...
(such a shame the radio forum does not have a reputation system )

[Tool]

Originally Posted by Wave Skipper

But of late I just check it even next to DDs - no effect. I also used to think that DDs would come to the aid of a sinking merchant if it was at least in sight. Apparently not. They do come to the aid of a sinking warship you are fighting with. I mean - yes they do come to the aid of a sinking merchant, but only if their distance is somewhere less than 900 meters. When I would play the standard mods or the regular game I would sneak in under the lead DD and start shooting ships when it was behind me. But when I started to build my own convoys I was in the habit of spacing ships at 1100 t0 1500 meters (especially in navy Task Forces). It was after that that i started to notice that I'd start sinking ships but as long as I kept my motor quiet the lead DD (now behind me) would just keep sailing off along the wavepoint line. I have not run tests yet to see if leaving my engines quiet will work at smaller distances - maybe it will.

I will test it some more. Perhaps the only reason I was ever attacked before was because in attacks I tended to ramp up my engines to all ahead full. I hope this all proves false (I will test more) cause if it is true it will mean SH3 is just SH2 all over again!

The other night in the channel i came up from behind on a convoy and started torpedoing ships in the rear of the convoy (with one DD out front and 3 rows of 6 ships). After i set the first 4 fish loose on them and they impacted (i was on the surface, night attack), i started seeing shells around me as I made a turn.. the DD had turned around and was coming thru the convoy after me. I dove made a few turns he drove right past me and i shot him with an aft tube. So.. they do come to the aid apparently in GWX 2..

I sank 8 ships plus the DD in that convoy and RTB..

Tool.

[Jimbuna]

Originally Posted by Sailor Steve

It was a very simple sonar device that sent a signal straight down. You can operate it manually from the navigator's table. They all had it, it did ping, and it could be detected. In the game? Now you've all got me wondering.

Not detectable in game