In reference to chart below

My dividers point to my next intended destination – a small sheltered anchorage just around the corner from the mighty Corryvreckan. Between the islands of Jura to the south and Scarba to the north lies this infamous gulf – 1.5 miles long and little more than half a mile wide at its narrowest point. Corryvreckan is the third most powerful tidal race and whirlpool in the world. The Clyde Cruising Club sailing directions state some sobering facts. “The warnings which invariably accompany descriptions of this notorious gulf should be carefully heeded. In calm weather at slack water the whole Gulf becomes placid and gives no hint of its ferocious nature under certain conditions of wind and tide. It is at its most dangerous when an Atlantic swell, having built up after several days of strong westerly winds, meets a flood tide. A passage at this time would be unthinkable”. Navigated at the wrong moment, even in calm conditions walls of water up to 4m high can be encountered , double that height if a heavy westerly swell is present. I think I’ll just take a walk from my anchorage and have a look.