The game has a sea map with waypoints, harbour information and a visual current map. The official log confirms these features but does not provide a complete, current list of port coordinates or every unlock rule. Exact map positions are 待确认.
What the map shows
The Immersion Update added a visual Current Map to the navigation map, showing currents that affect boat speed. A later update added a 3D marker for waypoints and improved the echo sounder. The full release corrected the PC prompt for placing a waypoint on the sea map. These are documented navigation features, not a guarantee that every marker works the same way in every mission.
Harbours and progression
The Co-op Crew Update changed locked-harbour information so the interface displays the required global reputation level. Its harbour schedule was extended to four weeks, with individual day selection and direct skipping to a selected day. The full release also fixed an incorrect harbour marker in an escort mission. A full map of the required reputation for each harbour remains 待确认.
Local and global reputation
The Career Update changed progression from XP to reputation earned with individual harbours. Local harbour reputation contributes to global reputation, which opens additional regions and opportunities. That means a visible but locked harbour is a progression question, not necessarily a missing map asset. The August update made the required global reputation level visible for locked harbours.
The full release then rebalanced some of those requirements. A port-unlock table copied from an earlier build could therefore mislead even if its map location is correct. Read the current level shown by the locked-harbour interface rather than trusting an old static chart. Exact current thresholds for all harbours are 待确认.
Radio and harbour approaches
The Immersion Update added Harbour Master contact through the radio. Players can request a docking slot when entering a harbour and can request towing assistance into or out of the port. These are documented harbour interactions that complement the sea map. The official notes do not say that every port uses identical approach rules or radio prompts.
Planning a route
Use the current sea map to compare the visible destination, waypoint prompt and current information before setting off. Weather and ocean currents are part of the game's official feature list, so route planning is more than drawing a straight line. Fast travel is a separate unlock at Level 1 in the full release. Which destinations support fast travel and under what conditions is 待确认.
Evidence
The official game site and update log support the map features described here. They do not include a downloadable, verified all-port map. This page does not invent coordinates or unlock levels.