The open waters of the Atlantic Ocean southeast of Vinalhaven define this maritime survey, where several named navigational hazards rise toward the surface. Roaring Bull Ledge sits in the northeastern reaches, while Three Fathom Ledge and Eastern Ledge mark the southwestern waters. This 2021 edition provides precise bathymetric positioning of these features, which have served as critical landmarks for local mariners and commercial fishers for generations. The chart focus remains entirely on the submerged topography and marine environment of Knox County, documenting the shoals and ledges that characterize this portion of the Maine coast without any terrestrial settlements or mainland development.
4 named features on this map. Tap any name to fly to it.
Don’t see what you’re looking for? This feature index may not catch every label — zoom into the map to look around manually.
This is the sole edition of this map. No revisions or reprints were ever made.
1904 · Deer Isle
USGS Topo · 1:62,500
1904 · Vinalhaven
USGS Topo · 1:62,500
1905 · Penobscot Bay
USGS Topo · 1:125,000
1906 · Matinicus
USGS Topo · 1:62,500
1941 · Vinalhaven
USGS Topo · 1:62,500
1942 · Deer Isle
USGS Topo · 1:62,500
1944 · Vinalhaven
USGS Topo · 1:62,500
1944 · Deer Isle
USGS Topo · 1:62,500
1948 · Bangor
USGS Topo · 1:250,000
1948 · Bath
USGS Topo · 1:250,000