what does it mean "naval spaces"?
Any space through which a galley can travel: port spaces, NTPs, DSTPs. BUt for this card, see 17.2:
"Naval Ambush (2): This card may be played against any force using
naval transport within three naval spaces—including Naval Transit
Points but not Deep Sea Transit Points—of one of your Galley
Are Naval Transit Points and/or Deep Sea Transit Points to be considered "naval spaces"?
See the card description in 17.2.
If there is a "Naval TransitPoints" between my fleet and an adjacent Port Space does it mean my fleet is 2 "naval spaces" away from Port space?