Are you talking game-mechanics-wise, or just philosophically? Your character cannot get in a boat in Flowrestown and sail east. You can only sail in predefined sea zones., to adjacent sea zones. The Forgotten Coast does not connect to Chenier's Coast. You can only go north to the Seeker's Coast, or south to the White Coast. If you want to get to Echiur by sea, it's a LOOOONG journey circling around the entire island to the north or south. It would probably take you almost two weeks.