Question 1

The rate at a tidal diamond on a mid-range day is roughly…

Accepted Answer

Halfway between neap and spring rates — Interpolate between the neap and spring figures according to the day’s range — the planner does this for every hour.

Question 2

Tidal streams generally run strongest…

Accepted Answer

Around headlands and through narrow channels — Constrictions accelerate the flow — headlands, narrows, between islands. That is where the diamonds show the big spring rates and where timing matters.

Question 3

A tidal stream arrow WITH feathers on its shaft shows…

Accepted Answer

The flood stream — Feathered arrow = flood; plain arrow = ebb. Rates beside them are mean spring rates.

The water is a conveyor

This lesson is part of a paid course