I love mines. They're one of my favorite features. The drive to clear them in certain parts of the world motivates a lot of great scenarios. Similarly, the desire to plant them in others makes for other great scenarios.
Mines are typically deployed in straight lines, because ships tend to steam in straight lines and aircraft tend to fly in straight lines. It's not unreasonable to figure on a mine every 1-2 miles. Really, though, number of mines you need depends on what your desired probability of actuating a mine is. If 'a' is the actuation radius of a mine (i.e. the distance at which it goes boom) and L is the distance across the location to be mined, then 2a * N / L = the probability of actuating a mine. By increasing 'N' you increase the probability of one going boom.
Clearance rates depend on a lot of things including the type of mine (moored mines are easier to pick out on sonar than bottom mines), the type of bottom (sandy bottoms shift around a lot, causing bottom mines to get buried, rocky bottoms less so) and the amount of pollution (places where there's a lot of junk on the bottom of the sea have more things that look like they might be mines but aren't). It might even be possible to encounter decoy mines which aren't mines at all but still need to be cleared. None of that is covered by Command. It also depends on the method of clearance. Sweeping is faster but less reliable (due to ship counters) than mine hunting.
That's the Cliff's Notes version of mine warfare.
Does anyone out there monkey with mines?
I have been preparing a Hungnam evacuation scenario and phase one is to clear the mines.
Does anyone have any sense of mine density.
I deployed at least 50 moored and floating mines, and the minesweepers had it cleared in 12 hours.
Is there any documentation that anyone is aware of as to how many mines get deployed in a situation?
Thank you; that is good to know.
Remember that the evil which is now in the world will become yet more powerful, and that it is not evil which conquers evil, but only love -- Olga Romanov.