Tide heights - definitions of tidal levels

Tide heights and definitions - an explanation. As the tide comes in and out it reaches different levels. This is largely to do with astronomy. Each level has a name and a meaning behind it. We need to understand each tide level so that we know what reference points we are using. This will stop us running aground and keep us safe. Read the full article here: https://www.getlostpowerboattraining.... Chart datum, height of tide, depth of water, neap range, spring range, MHWN, MLWN, MHWS, MLWS, height of lights, HAT, height of bridges.