New Marine Additions

For all of you out there that like to mess about in boats, etc. I have some news. The TT HD Topo maps now include buoys, wrecks, navigation lights, tidal wetland/mud/rock/sand banks, shoals, reefs & rocks. They already had locks, boatyards & slipways.

As of the 7th of June, 2021 the British Isles TT HD Topo and TT HD Topo Pro maps now also show the following data (where it exists in the raw OSM data):

  • Sand banks
  • Mud flats
  • Mangrove
  • Tidal wetland
  • Salt marshes
  • Shoals
  • Reefs
  • Sea rocks
  • Buoys and Beacons (navigation)
  • Lights (navigation)
  • Wrecks
  • Fens

You can see some example screen shots below that show these new additions:

First one is of part of the Solent, showing navigational buoys, lights and tidal wetland/sand, etc.

First second one is of  part of the Mersey, showing tidal wetland, sand banks, mud flats, navigational buoys and lights, and sea rocks.

The final one is of Bembridge on the Isle of Wight, showing tidal sand flats, mud, rock, navigation buoys and lights.


The look of the icons used for Boatyard, Lock Gates and Slipway have also been tweaked, both for aesthetic reasons, and also to make this markup render cleaner on Fenix devices.

Talking of Fenix devices (and also Tatcix, MARQ, ForeRunner 945, etc.), here are two screen shots of Bembridge on the Isle of wight showing the new features (this was before I did some more tweaking to the Buoys and mudflats:

All other maps now have this updated style added to them as of the 5th of July.

The Isle of Wight SAMPLE map has also been updated to include these changes.

These are the latest additions to what are considered the most detailed off-road maps based on data from OSM. These maps are not a replacement for Sea Charts, but they do offer some navigation and topographical features that will be useful to those that like to explore the estuaries, sea and inland waterways…

If there are other important sea navigational/warning items that you feel should be added, please reach out to us and let us know.

Update: I have looked at the OpenSeaMap charts (also based on OSM data) and they don’t include any navigational buoys, lights, wrecks, sea rocks, etc. So our maps are already more useful to most boat users than the OpenSeaMap ones. I will be adding other marine data to them in the next month.

Update 2: I have now added even more marine data to the maps, such as restricted areas, anchorage areas, etc.

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