Availability or not of navigation aids and services at ports and in the approach channels:
- Pilotage services;
- Lights and lighthouses;
- Radar and radio beacons;
- Vessel Traffic System (VTS) within port and coastal navigation services around port;
- Tugs for in-port maneuvering (number);
- Escort tugs for tankers (number);
- Bunkering facilities;
- Mooring services.