Tides, currents and “the rule of twelfths”

[@redtobertshateshandles]

Great, easy to understand. Screw his sine curve.

[@emilbeetge]

Excellent! You made it so easy to understand. As a kitesurfer, I needed to know when to expect strong currents (making it difficult to go upwind). Thanks.

[@CaralineRLevy]

So how do you make sure there is enough depth for navigating shallow waters in a keel boat assuming the boat has a 4 ft draft.

[@roscoboy]

Excellent mate. Thank you

[@mboutdoors_uk]

Really helpful, thanks!

[@siobhrabrennan7079]

Excellent explanation!!

[@WavedancerWesterlyfulmar]

Fellow Irish sailing channel. Greetings

[@genghisthegreat2034]

Just draw a sine curve.