Several beeps of an active sonar. This is a low frequency sonar (long range but low definition). It is a sine wave of 1040 Hz frequency easy to put in loop. In reality, a military submarine usually has passive sonar, more sonar info: en.wikipedia.org/wiki/Sonar. UCS Category: BOATSub. Duration: 00:21.
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. UCS Category: RAINGlas, STORM. Duration: 00:52.
Stream flowing down a wooded mountainside, far from any busy road; no birds in the area. Hautes Pyrénées, near the old spa resort of PAUZE, located not far from Cauterets (65110). Altitude of the sound recording: 1053 m. Date: 05-07-2022, afternoon. Weather: overcast, foggy, stormy, no wind. UCS Category: WATRFlow. Duration: 05:51.