RECOMMENDATION ON NAVIGATION - ALL VESSELS

Mariners intending to use the Pentland Firth should be aware of very strong
tidal streams and sets within this area. For further details see larger
scale products, Admiralty Sailing Directions and Tidal Stream Atlas.
Difficulties can be encountered when transiting either with or against the
tide. Masters should ensure that a close watch is kept at all times on the
course, speed and position of their vessels.