That’s not fundamental to how mines work. You could arm/disarm them remotely, either manually or via transponder. But I assume most mines are not like this.

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Pay08 8 hours ago | parent [-]

The problem is that it's to my knowledge very difficult to know where maritime mines are, since they get swept around by currents.

	▲	bigyabai 2 hours ago \| parent [-]
		CAPTOR is your solution: https://en.wikipedia.org/wiki/Mark_60_CAPTOR $130,000 a pop in 1980s money, probably even cheaper if you have trade inroads with China and a bunch of 533mm torpedos sitting around in storage.