Ah. I see in Post #16 he does say he "stockpiled" the mines. I missed that. Nor would it have penetrated to my mind as I can't see any reason to ever do that to mines in the device inventory screen. It's not as if they can wander off, or be used by a unit you want to withhold from, as LCU devices can be. Also, the word "stockpiled" in general English can be used in two ways. Either forcibly prevented from leaving, as the game uses it, or just "being produced and piled up", with no locus really intended in the definition.
But sure, if he clicked the Stockpile button, that is a more elegant reason the whole map is bereft than any I came up with.
On the sub I continue to not see a cause if air superiority isn't it. Am I missing something in the screenshot?
No, you are not "missing something in the screenshot" for the simple reason that the screenshot shown in post #3 does not disclose all the pertinent data. Recall that in my 101 ship repair guide I strongly recommended that all ship repairs should be conducted via the manage ship repair button, not the individual ship info screen. The post #3 screenshot only discloses details of the sub, it does not disclose the complete details of the repair status. For example that screenshot does not disclose whether the sub is still within the 3 day activation period from offline to online status.
As to air superiority, that still remains very much in the equation. After all these years it still amazes me that you and the others who have provided helpful comments keep on trusting the accuracy of any comment of the OP's. Just because he claims in post #13 air superiority isn't the cause simply does not make it so.