Note that there are times when it makes sense, like the campaign layers. Ie: you have the roll for all the random layers happen the same way every time for a given seed. then with save games, etc, all you need is the date and time and the seed, and all the convoys, etc can be rebuilt en route.
For individual gun shots, torpedo explosions, torpedo errors, etc, it makes no sense at all since it would result in some patrols being hopeless (all torpedos doing min damage, all escorts seeing you optimally, all torpedos running deep and being duds, etc). Others might have the effect where some "novice" DDs should see you, but this patrol NONE see you. This would explain a lot, actually, if true.
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