FREE OUPV Marine Weather and Tides Questions and Answers

Question 1

You are operating a vessel in the Northern Hemisphere and observe the barometer falling steadily, the wind shifting from southwest to northwest, and a line of dark, vertically developed clouds approaching.
What weather phenomenon are you most likely experiencing?

Accepted Answer

The passage of a cold front

Answer

The formation of a land breeze

Answer

The passage of a warm front

Answer

The formation of advection fog

Question 2

Which of the following alignments of the Earth, Moon, and Sun results in spring tides, which produce the greatest tidal range?

Accepted Answer

When the Sun, Earth, and Moon are aligned in a nearly straight line.

Answer

When the Sun and Moon are at a 90-degree angle relative to the Earth.

Answer

When the Moon is at its furthest point from the Earth (apogee).

Answer

When the Earth is at its closest point to the Sun (perihelion).

Question 3

You are navigating off the coast of New England and encounter a dense fog bank. The weather report indicated that warm, moist air from the south was moving over the colder ocean water. What type of fog is this?

Accepted Answer

Advection fog

Answer

Radiation fog

Answer

Steam fog

Answer

Upslope fog

Question 4

In the Northern Hemisphere, which of the following correctly describes the wind circulation around a high-pressure system and the typical weather associated with it?

Accepted Answer

Clockwise and outward, associated with fair weather.

Answer

Counter-clockwise and inward, associated with stormy weather.

Answer

Clockwise and inward, associated with fair weather.

Answer

Counter-clockwise and outward, associated with stormy weather.

Question 5

According to the Beaufort Wind Scale, a wind force of 6 is described as a 'Strong Breeze' with wind speeds of 22-27 knots. What is the corresponding sea state?

Accepted Answer

Large waves begin to form; white foam crests are extensive; spray is likely.

Answer

Sea is like a mirror; ripples are present.

Answer

Small wavelets with glassy crests; no breaking.

Answer

Moderate waves, many white horses, and some spray.

Question 6

The depth soundings shown on a U.S. nautical chart represent the vertical distance from the seabed to which reference plane?

Accepted Answer

Mean Lower Low Water (MLLW)

Answer

Mean Sea Level (MSL)

Answer

Mean High Water (MHW)

Answer

Highest Astronomical Tide (HAT)

You are operating a vessel in the Northern Hemisphere and observe the barometer falling steadily, the wind shifting from southwest to northwest, and a line of dark, vertically developed clouds approaching.What weather phenomenon are you most likely experiencing?

You are operating a vessel in the Northern Hemisphere and observe the barometer falling steadily, the wind shifting from southwest to northwest, and a line of dark, vertically developed clouds approaching.
What weather phenomenon are you most likely experiencing?