That's me and my other pastime. I perform as John Lennon in several Beatles tribute acts.
11.2 SEA MOVEMENT
Units using Sea Movement must begin the Movement Phase in a Sea, Ocean, Coastal Land, or Straits area. They may move through a number of contiguous Sea, Ocean, Straits or Coastal areas not exceeding their Movement Speed, but must stop upon entering a Coastal Land Area.
Our interpretation is that units may start in one coastal land area and move to an adjacent coastal land area by sea movement but must then stop. Thus, I see nothing that precludes a ground unit in a coastal area from becoming a convoy, moving to a disputed friendly adjacent coastal area, and engaging. Is this correct? It should be noted that the sidebar on page 12 seems to specifically prohibit Sea Invasions in this manner:
Sea Invasions occur when Convoys move from the Sea onto Enemy-controlled Land Areas (crossing a Coastal border).
But it's not a Sea Invasion if it is a FRIENDLY disputed coastal area. Clarification?