It shows in electronic raster charts using the Skipper App on my iPhone, and it also shows the ActiveCaptain comments as follows:
ActiveCaptain Hazard Marker #2 comment:
"Narrow and poorly marked passage with numerous submerged rocks. Charts are not always accurate east of Goose Rocks and continuing up Little Thoroughfare. Consider going around the Fox Islands Thoroughfare side of Stimpsons Island and south of Goose Rocks."
User-contributed comment:
"Better Safe than Sorry
Date: 2011-06-07
Captain: sjtall, Sorrento, ME (64)
Motoring in our sloop (5'2" draft) from west to east, cut the corner to the east of Goose Rocks a little too close and slammed a ledge. It was a quiet morning in the off season, slack tide, minimal current. The passage is littered with many rocks - from the light at Goose Rocks at the west to the east end of Little Thorofare. Don't trust the charts or your GPS. Keep an active watch at the bow and go slow. Better yet, go to the south of Stimpsons Island."