PING sound when asking for depth under keel.

[Sailor Steve]

Originally Posted by CptGrayWolf

btw anybody know if type VII U-boats even had this IRL?

Yes they did.

The Echelot Gear

The shallow water gear is of the super-sonic type, using a magneto-striction transmitter of frequency 1,500 cycles per second and a similar receiver unit, mounted horizontally, 28 in. apart, in a flange welded near the bottom of the hull. Transmission is by the condenser discharge method. The deep water gear consists of three "Wall" type sonic transmitters connected in parallel and three moving coil receivers connected in series, mounted in the keel, 32 ft. 6 in. apart.

An alternator giving 1,500 cycles per second, provides the power for the transmitters at the working frequency of 3,000 cycles per second.

The same depth indicator, namely a rotating neon tube, is used for both deep and shallow sets, the ranges being 0-125 metres shallow and 0-1,000 or 0-3,000 metres deep.

Provision is also made for hand transmissions and aural reception, using a stop watch for determining the depth.
http://www.uboatarchive.net/U-570BritishReport.htm

Bottom of page 28.

[GoldenRivet]

ok we are talking about two different pings here.

i think

ping one: the echolot depth reporting ping machine device thingy

ping two: the range to target ping thingy with the button at the hydrophone station.

am i to understand they CANT hear "ping one" but CAN hear "ping two"?

[Sailor Steve]

I assumed the depth-sounder because that's what he asked for.

Originally Posted by joho

Hey.
You know that PING sound that is heard when asking the navigator for current depth.
Can destroyers hear that sound?

In real life they could hear any sound you transmitted. In the game? There seems to be some controversy, as witnessed by the posts here. I prefer to play as if it was all real, so I never use it when a destroyer is anywhere to be seen.

[GoldenRivet]

steve - your right... but the thread went on to talk about pinging a target. :hmm:

just tried it in a single mission.

Pingged the ocean floor half a dozen times - no response from the 4 nearby destroyers.

Pinged a destroyer with the ping button at the hydrophone station (if your sub is so equipped) and their response was almost immediate.

so through my trial and error there

they CANT hear the echolot

but they CAN hear the S-Gerat

[Erich dem Roten]

I forget where I saw this discussed, but no, the AI cannot hear you checking your depth. This may cause some confusion as I'm pretty sure in SH4 they can.

Also GR's test pretty much confirms it.