TIDAL STREAMS - CANNA

The tidal streams run strongly W and SW of Canna (57°04´N 6°32´W).
There are heavy overfalls over all the rocks and around Oigh Sgeir
(56°58´N 6°41´W) in bad weather with the wind against the tide,
the sea breaks heavily up to 15 miles SW of Canna. For further details
see Admiralty Sailing Directions.