Seal Island stands as the primary terrestrial feature in this 2014 maritime survey of the Atlantic Ocean off the coast of Knox County. The map focuses on the navigational hazards and undersea topography that define the waters southeast of Vinalhaven, Maine. Submerged and partially exposed formations including Roaring Bull Ledge, Three Fathom Ledge, and Eastern Ledge are precisely located, illustrating the complex seafloor that mariners have navigated for centuries. This chart captures the area's geography as it appeared in the early 21st century, showing the isolation and specific navigational markers of the Maine coastline.
6 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