Art Of Noise sound

In the Art of Noise tune 'Moments in Love,' There is a percussive sound on the fourth beat of each measure that sounds like a submarine. I can't explain it any other way, It sounds as "Doooooo". I need this sound for a client, somebody enlighten me as to were I can find this sound or create it. Thanks a Mil

a 1K sine wave (oscillator) in short bursts sounds like a sub's sonar with reverb.

This is a conga slide (percussion).

You got to it before me...nice call Oliver...

Hello Oliver