L. Scott Johnson
The ONLY way you can place a landscape tile during a voyage is if it is placed adjacent to a tiles where you have the majority of ships.
For example: if my opponent has one ship on a tile and I have two ships on an adjacent tile, I would be able to place a new tile adjacent to both.
The reason I ask is because the rules say: "you must make payment with an adjacent ship", so in order for that to happen the tile must be placed adjacent to it.
Is this correct?
Yes, exactly correct.