TIDES Flashcards
1
Q
how long is a lunar day
A
24h 50min
2
Q
How long between 2 high waters
A
12h 25min
3
Q
time between high and low tide
A
6h 12min
4
Q
Spring tide moons are at…
A
Conjunction (new moon) or opposition (full moon)
5
Q
Neap tide moons are at…
A
Quadrature
6
Q
What effects tides
A
Barometric Pressure
Wind
7
Q
Drying height
A
The height of a rock or shoal above Chart datum
8
Q
Highest Astronomical tide (HAT)
A
Highest level a tide can get under normal circumstances
9
Q
Lowest Astronomical tide (LAT)
A
Lowest level a tide can get under normal circumstances
10
Q
Charted height
A
The hight of all overhead things, is measured from HAT. All singular structures (lighthouses) are measured from MHWS
11
Q
A
