Todd Navigation

Co-Tidal Charts

Co-Tidal Charts help bridge crews to predict offshore tidal conditions. Each chart marks points on a coastline where the high water time is the same, while arrowheads show the main direction of the tidal streams.

This site uses Cookies

This site uses cookies to provide you with an improved browsing experience, personalise content, keep you logged in when shopping and to analyse which parts of the site you visit. They are harmless and will improve your experience on this site. Our Privacy Policy.