The rocks off Lizard Point must be safely cleared.
Sailors visiting our home waters around the western shores of the British Isles and Northern France are often astonished at the powerful effects that our strong tidal streams have on passagemaking.
With a tidal range of up to 15 m (50') in the Bristol Channel, and the Bay of St Malo close behind at up to 13 m (42'), that’s perhaps not surprising. If you sail (or plan to) in the world record Bay of Fundy with its up to 16 m (52') range, or the Inside Passage between British Columbia and Alaska on the west coast of North America, then you’ll know that this is relevant to you, too.
A Tough Example
To make this interesting and relevant, join me, in this five part series, on a late April passage through the Irish Sea, from Falmouth in Cornwall to Oban in Scotland (c. 450 nm), a voyage I have made dozens of times in a variety of ways, from day sailing all the way to non-stop.
On this passage, easy to enter all-access ports, especially those able to accommodate larger (> 12 m/39') yachts, are few and far between. On the positive side, there is an area of relatively slack tide in the middle sector of the passage, which can allow you to relax a little.
In the northern sector of the Irish Sea the tidal streams pick up once more to become stronger with each additional mile, leading to a major tidal gate in the North Channel between Scotland and Northern Ireland. Once through that gate it’s back to working the tides once more, dealing with some strong tidal streams and associated races before arriving at Oban, our final destination.
In summary, a passage that demands a good boat with a capable crew who possess flexibility and gumption in equal measure. And two passages are seldom alike due to the vagaries of wind and weather. Challenging it may be, but potentially rewarding, too.
Let's start with my tips for planning this, and other, coastal passages:
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