Ep 11: Navigation: Tide Tables
Vložit
- čas přidán 26. 07. 2024
- Welcome to Episode 11 of Carpe Diem Sailing. In this video I talk about tides and tidal currents. I explain the difference between a tide table and a current table. I go over how to apply the data found in a tide table to the soundings (depths) on your nautical chart. I also talk about different datums for different countries. Let me know what you think. Please leave a comment. Thanks. I wish you fair winds and following seas.
CARPE DIEM SAIL TRAINING
www.carpediemsailing.com
LEARN TO SAIL PLAYLIST
• Learn to Sail - Sport
Another quality video Marco! Your mixed media use is right on point for grabbing and holding attention! Informative without being too long - just the right amount of information. Great time-lapse. A long day to sit and watch your camera...
Thank you. Yes it was a long day. My only thought was “what if this doesn’t work out” 🤔 Glad it did
This was a great video, I am leaving for a trip to destination sound and was nice to refresh my knowledge on tides. And the best part is I can see your marina from my apartment window
Have fun Jeremy! Thanks for the comment.
That time lapse video is awesome. Never seen that before. It's more dramatic when you see the boat owner working on the hull, the boat, then the water comes back and refloats the boat. I'm used to 1 to 3 feet, but this is extreme, though one good way of checking the hull often.
Glad you enjoyed it! 7 1/2 hours of sitting by the camera , not sure how it was going to turn out so very happy it turned out well.
I'm on England's south coast above the English channel. We get an average spring tidal range of around 16/17 feet or 5 meters.
This summer I sailed down to Guernsey (in the British channel islands) and on to St Malo in France. Luckily it was just after mid neaps and springs and mid summer so the tidal range was under 10 meters or 30ish feet in English money. It felt like a huge spring tide to me.
St Malo's spring tidal range gets up to 49 feet or 15 meters around the equinoxes.
All the harbours are behind sills and accessible for a range of hours around high water.
You need to find a low tide proof anchorage to wait (anchoring itself being another challenge) or time your arrival very well.
Great illustration at the end, showing your time lapse footage as it relates to the rule of twelfths!
Thanks Aqua Vita
awesome video
Thank you. Appreciate it
Excellent other aspect of the sea world very important! Thanks million
Thank sir. I love your support
Cos I grew up in Poland (Baltic has no tides) I'm always fascinating of tides phenomenon.Thank you for this video
Thank you for the kind comment. I’m glad you enjoyed the video. Please feel free to make suggestions for future videos.
this is amazing, thank you.
Thank you too!
Great video, thank you so much! In the time lapse, it appears that the water level is oscillating slightly while raising. I would have expected a steady raise. Any idea why this is happening?
Thanks for the comment Stefan, I have no idea why it was doing that. I t was interesting to see though.
In the UK we simply refer to ocean currents and tidal streams (that are documented in tidal stream atlases with separate diagrams split over 6 tidal hours usually before of after H/W).
Currents are in the ocean and more permanent, streams are tidal and change twice daily.
Ironically the only ocean current you mentioned was the Gulf Stream.
If you disregard this as the only anomaly because it was named by an American, miraculously the confusion it injected into something that was simple, very clear and understandable is dispelled.
Tidal streams. Ocean currents.
Now, if we could just get you to paint your lateral marks the right colour, stop mispronouncing buoy like 5 year old boys (that's a clue) and change gear with your left hand so that you can use your dominant hands to steer, there could be a partial re-establishment of the natural order of things.
Yes I much prefer the term tidal stream
Wow! The time lapse. The the guy working on his boat was almost swimming 😅
Glad you enjoyed it. It made the standing there for 7 1/2 hours worthwhile
2:25] Jesus! Whitewater sailing - who knew? As an American teenager growing up canoeing in the Temagami Crown Forest, that would be a pretty decent riffle. You want me to sail a boat through that?
Yes the currents can flow quite fast, this is a small one there are much bigger and more powerful tidal passes tidal passes. The point is to go through at slack not when it is flowing.
The Rule of Twelfths. Yuh know, I think that is something I've never properly appreciated. It's almost like a sin wave turned on its' edge. The tide fills most rapidly at mid tide. I think I've never quite grasped that properly.
Glad to hear it's helping you make sense of it.
I just use Ports and Passes. Way easier to figure out!
Totally agree. I love my Ports and Passes
I'd like to know what that fin keel was doing just sitting on the keel before the tide came up in the time lapse. That seemed wild. Did somebody forget their boat there?
Thanks for the comment Forrest. That's what's called a tidal grid. Kinda like a drydock. The boats are parked and secured at a very high tide and when the tide recedes the boats sit on their keels on a flat surface and different types of maintenance can be done while the tide is out. In our area you have about 6 hours. Much cheaper and convenient than a haul-out. Thanks for watching!
Feet but no inches.
It's interesting to me that Canadians use but have decimalised feet.
Our conversion to metric from imperial is pretty unique in the world. Somehow we managed to convert some things like Km and Celsius but not feet and inches. Now we’re stuck between 2 systems and I think it’s for good 🙄