Several beeps of an active sonar. This is a low frequency sonar (long range but low definition). It is a triangular wave of 1030 Hz frequency easy to put in loop. In reality, a military submarine usually has passive sonar, more sonar info: en.wikipedia.org/wiki/Sonar. Duration: 00:31.
Storm then big drops of rain on a car windshield. This sound can be immediately preceded by Sound # 1295 (Rain on Windshield Car). Sound recording inside the vehicle. Duration: 00:52.
