seaTileRemoval property
Whether to remove tiles that are entirely sea
The checks are conducted by comparing the bytes of the tile at x:0, y:0, and z:19 to the bytes of the currently downloading tile. If they match, the tile is deleted, otherwise the tile is kept.
This option is therefore not supported when using satellite tiles (because of the variations from tile to tile), on maps where the tile 0/0/19 is not entirely sea, or on servers where zoom level 19 is not supported. If not supported, set this to false to avoid wasting unnecessary time and to avoid errors.
This is a storage saving feature, not a time saving or data saving feature: tiles still have to be fully downloaded before they can be checked.
Set to false to keep sea tiles, which is the default.
Implementation
final bool seaTileRemoval;