Join Date: Aug 2007
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slack tide vs slack current response
Thanks for the response. Your comments basically confirmed my concerns were justified. Slack tide and slack current are deffinately NOT the same. Which is nice to know before attempting passage through any narrows.
It just seems odd to me that this basic, most valuable, and most neccessary knowledge is not made more available in all the literature on this subject found on the internet or in books.
The book I was referring to in my previous thread on this topic, the one that finally showed me the true differences between slack and max currents at different narrows from Olympia, WA to Prince Rupert, BC is "Ports and Passes 2007" published by Chyna Sea Ventures Ltd.
My latest experience occured when I was in Nanaimo on Aug 12, 2007 planning passage through Dodd Narrows (south) on an ebb tide. High tide in Nanaimo was at 4:40 AM, which previously would have been the time I would have attempted my passage. But my new currents book told me that Dodd Narrows was max slack going into an ebb at 3:51 AM (51 minutes earlier), which was the true ideal time to pass through Dodd Narrows heading south. In the end, we decided to abandon traversing Dodd Narrows in the dark and just crossed the Straight of Georgia for Point Roberts at 6 AM, which turned out to be the fastest route to Bellingham as we avoided all the Gulf and San Juan Islands and dealing with all those currents.
Anyway, thanks for the comment on this topic and I do hope this info helps somebody out there. I know it would have saved me a lot of head aches had I read this info two years ago. And I'm still wondering why it's not discussed more in other passages considering it's vital importance.
Good luck to all sailors passing all narrows.