Weird humming noise on hydrophone (TWOS)

speed150mph · 07-31-21, 05:56 PM

So I started playing again after a long hiatus. I’m in the costal waters campaign in 1939. I’m crawling along at 3 knots in silent running, depth 100 meters trying to avoid detection. I’ve got a warship of some description off my starboard beam, bearing 077 medium speed, moving away estimated range about 5500 meters.

Listening to the hydrophone I can hear the constant chugging swishing noise of the screw, but every now and then I can hear a humming drone coming from the same bearing, almost sounds like a lawn mower sound or aircraft engine. It comes then fades away and then repeats. There also a high pitched whistling noise as well, almost sounds like when you blow air over the mouth of a bottle. Has anyone else heard anything like this? Does anyone know what it could possibly be?

Ashikaga · 07-31-21, 06:33 PM

Congratulations!

YOU HEARD WHALES!!!

speed150mph · 07-31-21, 08:28 PM

For real??? My hydro operator identified it as a warship, and it has blade noises, the humming sounds also followed its bearing.

I figured maybe it was some sort of machinery or something 🤔

Ashikaga · 08-01-21, 01:28 AM

Well some DD's do have a whine. Which ones I am not sure about but I mostly hear it when a Tribal is close.

And yes, tye game has whales. Sounds as well as animated ones. Saw one once, heard many more. Which was epic!

les green01 · 08-01-21, 12:19 PM

it is a great feeling to see a whale on the game and the game will classifie the whale has a warship

Ashikaga · 08-01-21, 01:24 PM

Quote:

Originally Posted by les green01

it is a great feeling to see a whale on the game and the game will classifie the whale has a warship

I do miss Dolphins though travelling in front of my bow wave and slightly to the side.

07-31-21, 05:56 PM	#1
speed150mph Electrician's Mate Join Date: Feb 2013 Location: Alberta, Canada Posts: 132 Downloads: 35 Uploads: 0	Weird humming noise on hydrophone (TWOS) So I started playing again after a long hiatus. I’m in the costal waters campaign in 1939. I’m crawling along at 3 knots in silent running, depth 100 meters trying to avoid detection. I’ve got a warship of some description off my starboard beam, bearing 077 medium speed, moving away estimated range about 5500 meters. Listening to the hydrophone I can hear the constant chugging swishing noise of the screw, but every now and then I can hear a humming drone coming from the same bearing, almost sounds like a lawn mower sound or aircraft engine. It comes then fades away and then repeats. There also a high pitched whistling noise as well, almost sounds like when you blow air over the mouth of a bottle. Has anyone else heard anything like this? Does anyone know what it could possibly be? __________________ Americans make better submarines? No my friend, Russia makes better submarines, Americans just make better computers Last edited by speed150mph; 07-31-21 at 05:58 PM. Reason: Needed to add something

07-31-21, 06:33 PM	#2
Ashikaga Commodore Join Date: Aug 2016 Location: Netherlands Posts: 617 Downloads: 31 Uploads: 0	Congratulations! YOU HEARD WHALES!!! __________________

07-31-21, 08:28 PM	#3
speed150mph Electrician's Mate Join Date: Feb 2013 Location: Alberta, Canada Posts: 132 Downloads: 35 Uploads: 0	For real??? My hydro operator identified it as a warship, and it has blade noises, the humming sounds also followed its bearing. I figured maybe it was some sort of machinery or something 🤔 __________________ Americans make better submarines? No my friend, Russia makes better submarines, Americans just make better computers

08-01-21, 01:28 AM	#4
Ashikaga Commodore Join Date: Aug 2016 Location: Netherlands Posts: 617 Downloads: 31 Uploads: 0	Well some DD's do have a whine. Which ones I am not sure about but I mostly hear it when a Tribal is close. And yes, tye game has whales. Sounds as well as animated ones. Saw one once, heard many more. Which was epic! __________________

08-01-21, 12:19 PM	#5
les green01 Seasoned Skipper Join Date: Jan 2002 Location: Freeman Missouri Posts: 1,735 Downloads: 1375 Uploads: 0	it is a great feeling to see a whale on the game and the game will classifie the whale has a warship __________________ I'll tell you what bravery really is. Bravery is just determination to do a job that you know has to be done. Audie Murphy