SOURCE-BACKED BOAT GUIDE
Channel Island anchorages compared
Rosaire publishes a 3–4.5 m anchoring band; Shell Beach is condition-dependent; Sark uses visitor fields; Alderney warns that outer bays need calm weather or offshore winds.
Open passage plannerRosaire3–4.5 m anchoring band
SarkEast and west visitor fields
Unknown depthsNever treated as safe
Planning aid, not clearance. An anchoring depth or visitor description does not establish a safe approach for your boat.
What the published guidance says
Rosaire publishes a 3–4.5 m anchoring band; Shell Beach is condition-dependent; Sark uses visitor fields; Alderney warns that outer bays need calm weather or offshore winds.
How to use it
Add your actual loaded draught and a suitable under-keel margin. Then check current primary navigation information, the day’s tide and local instructions. Missing depth remains unknown.
Official sources
Checked 11 September 2026
MarinasSark TourismVisit Alderney