Distant Shores TV · video

What this video covers

Calculating tidal heights allows vessels with lifting keels to navigate shallow waters and dry out at specific locations, such as Chichester Harbour.0:32 To determine if a boat can safely reach a destination and float again, sailors must identify the high and low water times and heights from a reliable source like Reed's Nautical Almanac.1:09 By plotting these values on a tidal curve graph, one can calculate the water depth at any hour, rather than relying solely on high and low tide extremes.5:10 For the Delquay area, a boat requiring 2.9 meters of water must arrive before 1330 and will float again after 2015.5:55 When tidal curves are unavailable, the rule of twelfths provides a standard approximation by dividing the tidal range into six hourly intervals of 1/12, 2/12, 3/12, 3/12, 2/12, and 1/12.6:48 Electronic tools like the Navionics boating app can verify these manual calculations.6:31 Understanding tidal curves is essential for planning passages in shallow, tidal regions.

More from Distant Shores TV

We're going to NorwaySept 2026TransAtlantic - Cooking at Sea in Foul Weather | Ep 277Aug 2026Beware of ORCAS! Part 2: Sailing SOUTH through Orca Territory to Portugal | Ep 276Jul 2026Sailing South: Dover, Storms and the Bay of BiscayJun 2026

From Distant Shores TV — see the channel’s boat, crew, and every analysed video.

The Sailing Directory Newsletter

One email with the fleet's best finds — the moments, boats, and stories worth your watch time. Enter your own address to get your own copy.