This tile is not required for the standard game. You only need it if you vary the basic set-up as depicted under point 12 of the game rules.
No.
No. You may only move the Explorer Ship onto tiles you have revealed on the same turn, immediately before moving the ship.
Yes.
If, at the beginning of your turn, the dotted line to be followed by the Explorer Ship traverses a tile where one of your opponents has a settlement or fort, you must pay toll to him. If this isn't the case, you don’t have to pay.
Yes.
Yes.
No. A tile only matches if you can place one of its sea edges adjacent to the space the Explorer Ship stands on. You may place the tile only in this matching fashion.
No. You always must place the tiles in such a way that sea edges with dotted lines border on sea edges with dotted lines, and island sections border on island sections.
No. They stay where they are.
No.
Yes.