Sonar Gun/Becon

ShadyBlissShadyBliss London Join Date: 2015-03-26 Member: 202609Members
Just wondering if this has ever been suggested?

Would be nice to have something you can attach to a submarine maybe, that scans the area in front of you, giving info on possible surroundings.
Or something you can drop down a trench to get a look before venturing.

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