Distant Shores TVvidéo
Aground at the Pub! The Importance of Tide Calculations | Distant Shores
11 juillet 2020 · 9 min · 31K vues · Chichester Harbour
Ce que couvre cette vidéo
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.
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