How does it make logical sense that a transport may pass through a seazone by itself unharmed with an enemy sub in that seazone, but that transport cannot ignore a sub when attempting to do an amphib assault by itself?? to me it doesn’t make a whole lot of sense
I don’t know what the exact reasoning behind the rule itself is, but in terms of the real world it does make a certain mount of logical sense. When a transport ship is travelling across the ocean, in potentially hostile waters, it’s trying as much as possible to avoid being found by an enemy sub. It keeps radio silence, it maintains a blackout a night, and it makes frequent course changes. It also helps that it has a whole ocean to lose itself in, though of course this factor is partially neutralized by the fact that the further a ship strays from the known shipping lanes the longer it takes to reach its destination. By contrast, an amphibious landing – by its very nature – involves attacking a fixed point (whose location immediately becomes known to the enemy when the attacking ships show up and open fire) and maintaining a relatively static position off the shore of that point, which makes it easy for any enemy subs in the area to converge on that position.