How do they detect you when on the bottom?

Poacher886 · 01-22-11, 08:47 PM

I just had an end to my first campaign...its was short 10/09/39. After damaging a couple of troop carriers in a medium sized convoy off east England, i noticed an Escort heading my way, so i dived.

Not realising the relative shallow depth of 70m i soon hit the bottom...going to external view to check what the noise was about (im still new to SH5), i found my boat 'Actually' on the bottom (as in not floating 20m above it!) and to the side of a big boulder.

I decided to sit it out with all engines off and crew at silent running to see the result, sure enough the ASDIC pings picked me up and before i knew it, i was to damaged to move....despite letting of decoys, i was a sitting duck and the single relentless destroyer made many passes before finishing me off!!

My question is though, how do they detect you??, if im not moving, then they cant hear me, im not on the surface so they cant use radar, and surely Asdic will detect an object moving in the middle of a body of water, but if im motionless on the bottom, i would have thought it would just bounce of the bottom of the sea bed like it would off any rock or formation under the sea.

How can they tell that its a U-boat on the sea bed???

01-22-11, 08:47 PM	#1
Poacher886 Chief Join Date: Oct 2010 Location: Highlands UK Posts: 323 Downloads: 36 Uploads: 0	How do they detect you when on the bottom? I just had an end to my first campaign...its was short 10/09/39. After damaging a couple of troop carriers in a medium sized convoy off east England, i noticed an Escort heading my way, so i dived. Not realising the relative shallow depth of 70m i soon hit the bottom...going to external view to check what the noise was about (im still new to SH5), i found my boat 'Actually' on the bottom (as in not floating 20m above it!) and to the side of a big boulder. I decided to sit it out with all engines off and crew at silent running to see the result, sure enough the ASDIC pings picked me up and before i knew it, i was to damaged to move....despite letting of decoys, i was a sitting duck and the single relentless destroyer made many passes before finishing me off!! My question is though, how do they detect you??, if im not moving, then they cant hear me, im not on the surface so they cant use radar, and surely Asdic will detect an object moving in the middle of a body of water, but if im motionless on the bottom, i would have thought it would just bounce of the bottom of the sea bed like it would off any rock or formation under the sea. How can they tell that its a U-boat on the sea bed???