The entrance to Cork Harbour situated on the South coast of Ireland can produce some pretty extreme sea states during the winter storm months. There are two main factors that influence the sea state at the entrance, the first being the ebbing tide, the second being shoaling waters over the Harbour Rock, this is situated at the entrance to the Harbour off Roches Point lighthouse, right in the middle between the Western and Eastern channel entrances.
Safehaven Marine undertook an 800nm 4 day cruise in Thunder Child II to Scotland, living off the boat to visit a place called the Gulf of Corryvreckan. A pretty wild yet beautiful place. The Corryvreckan whirlpool, or ‘Maelstrom’, as would be a more appropriate description, is formed as the tide enters the narrow stretch of water between the Islands of Jura and Scarba that is the Gulf of Corryvreckan. Here the tidal flow speeds up to 8.5kts as it is squeezed between the islands, and there...
