Whaleback Reef, west of Strømforhold

Strømforhold 0.3 mi Portsmouth Harbor Entrance 0.5 mi Wood Island, northwest of 0.6 mi Odiornes Point, northeast of 0.6 mi Little Harbor entrance 1.0 mi Odiornes Point, NNE of 1.1 mi Fort Point 1.4 mi Salamander Point, north of 1.5 mi Clark Island, south of 1.6 mi Clark Island, southwest of 1.9 mi Shapleigh Island Bridge, south of 2.0 mi Henderson Point, SSW of 2.1 mi Henderson Point, west of 2.2 mi Pierces Island, northeast of 2.5 mi Portsmouth Harbor, Gangway Rocks LB13 2.8 mi Memorial Bridge 3.6 mi Sara Long Bridge 4.0 mi I-95 Bridge 4.7 mi Schiller Station 6.4 mi Frankfort Island, south of 7.4 mi General Sullivan Bridge 7.9 mi Dover Point, west of 8.2 mi Furber Strait 8.5 mi Knight Hill Township, west of 8.9 mi Goat Island and Fox Point, between 9.0 mi Goat Island, north of Tidevand 0.5 mi Jaffrey Point, Portsmouth Harbor 0.7 mi Gerrish Island, Portsmouth Harbor 1.0 mi Fort Point, Portsmouth Harbor 1.6 mi Kittery Point, Portsmouth Harbor 2.4 mi Seavey Island, Portsmouth Harbor 2.8 mi Portsmouth, Portsmouth Harbor 2.8 mi Seapoint, Cutts Island 3.7 mi Atlantic Heights, Piscataqua River 6.0 mi Fort Point, York Harbor 6.0 mi York Harbor 7.1 mi Gosport Harbor, Isles of Shoals 7.8 mi Dover Point, Piscataqua River 9.4 mi Cape Neddick 10.6 mi Squamscott River RR. Bridge, Piscataqua River 11.0 mi Salmon Falls River, Piscataqua River