I used your co-ords to get this. https://www.openstreetmap.org/#map=19/47.71452/-124.42098 I seems to me that the coastline was partly created clock wise and part anti clock. I have only mapped a few lakes with islands and can't remember which side of the line land is supposed to be on but it is in the wiki. I have looked it up and.. The coastline should be created anti-clockwise with the land to the left as you create a coastline. With P3 and JOSM editors the way direction can be reversed. When I looked at your island the greater part of the coastline needed reversing so the land was to the left.left. You could look at another location and inspect the tagging see the JPEG note the arrow in the tool box indicates the "way" direction. ![alt text][1] [1]: https://help.openstreetmap.org/upfiles/Coastline.JPG

I used your co-ords to get this. https://www.openstreetmap.org/#map=19/47.71452/-124.42098 I seems to me that the coastline was partly created clock wise and part anti clock. I have only mapped a few lakes with islands and can't remember which side of the line land is supposed to be on but it is in the wiki. I have looked it up and.. The coastline should be created anti-clockwise with the land to the left as you create a coastline. With P3 and JOSM editors the way direction can be reversed. When I looked at your island the greater part of the coastline needed reversing so the land was to the left.