Choosing a dive site moves the pin and clears the coordinate boxes. Click the map to fill latitude and longitude instead. Blue pins are the nearest meteorological stations inside the search distance, from the stored list. Neither looks up a place name.

Choose a dive site, or enter a latitude and longitude, or an MGRS grid. Those are separate checks. Leave the coordinate fields empty to use the dive site. A map click fills decimal degrees and does not look up a place name. Example: 26.9342, -80.0942, or 17R NK 89923 79469. The search stays within 25 nautical miles. Sites with no buoy in that distance are left off the list. The list is stored, not a live lookup.

Times start at UTC. The box keeps that choice in this browser for 30 days and does not change the shop location. A visit does not pull buoys until you check. Open the buoy again after changing the zone.