Plus d'informations sur les marées et le milieu marin pour Halfmoon Shoal 1.9 miles northeast of
Marées près de Halfmoon Shoal 1.9 miles northeast of
- Halfmoon Shoal 3.5 miles east of
- Tuckernuck Shoal off east end
- Monomoy Point 6 miles west of
- Cross Rip Channel
- Handkerchief Lighted Whistle Buoy 'H'
- Handkerchief Lighted Whistle Buoy H
- Broken Ground-Horseshoe Shoal between
- Broken Ground-Horseshoe Shoal
- Great Point 3 miles west of
- Point Gammon 1.2 miles south of