From: US Midwest
I recently discovered that the Axis does not actually have to use the transit hexes to go through the strait. If the Axis bombard the lower port at Gibraltar to a strength of 0(which is very easy since it only starts as a 5), Axis warships may transit the straight freely.
I wonder if this is working as intended, since once the Axis player realizes this, Gibraltar really is no obstacle. I always thought you had to take the Gibraltar hex itself, which is much more difficult than just bombarding a port, in order to control the strait. But in the game I am playing, my opponent has done this several times, so it obviously works. On the replay, it looks like the warships are actually traveling through the port hex once it is damaged.
Why damaging the port facilities, instead of the fortress itself, would make it easier for an enemy warship to transit the strait, is a mystery, but it is so.
Lock up your wife and children now,
It's time to wield the blade..