Establishment of a port

Establishment of a port is the technical expression for the time that elapses between the moon's transit across the meridian at new or full moon at a given place and the time of high water at that place. The interval (constant at any one place) may vary from 6 minutes (Harwich) to 11 hours 45 minutes (North Foreland). At London Bridge it is 1 hour 58 minutes.[1]

  • "Establishment of the port". The Free Dictionary.

References
  1. One or more of the preceding sentences incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). "Establishment of a Port". Encyclopædia Britannica. Vol. 9 (11th ed.). Cambridge University Press. p. 789.
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