It is clear from reading the rules that the minor port of Suez is adjacent both the Red Sea and E. Med. (i.e. a naval unit based in Suez can enter either the Red Sea or the E. Med by expending one point of range).
My question is whether a naval unit moving from the Red Sea to the E. Med. (or visa versa) must pass through the port of Suez to do so?
For example. The Axis has a fleet in Alexandria and wishes to move into the Red Sea. Would that be one range to go into the E. Med, one range to go into the port of Suez and one to go into the Red Sea?
The rules say:
11.4.4 Naval movement restrictions
2. You can’t move naval units between the Eastern Mediterranean and the Red Sea, or between Suez and the Eastern Mediterranean, if a major power you are at war with controls any of the hexes adjacent to the Suez Canal.
The wording here clearly implies that you can move between the sea zones if an enemy doesn't control any of the hees of the canal.
So I think it pretty clear that you don't have to 'stop' in the port of Suez, it doesn't say that you do.