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Flashcards in Navigation General Deck (38)
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1

The period of high or low tide during which there is no movement of the water is called?

Slack Tide

2

When you are steering on a pair of range lights and find the upper light is in line with the lower light you should

Continue on present course

3

A vessel's position should be plotted using bearings of what?

Fixed objects on shore

4

Spring Tides are tides that have....

lower lows and higher highs than normal

5

Steam Fog, known as "sea smoke" is most common during what season

in the fall

6

The Local notice to Mariners is published when?

Weekly by the Coast Guard

7

The difference between the low and high tide is known as the what?

Range

8

On the East and West coasts of the US, Charted depths are taken from the.....

Mean Lowest low of water

9

When the sun and the moon are in alignment, what type of tide occurs?

Spring Tide

10

When the sun and the moon are at right angles to each other, what type of tides occur?

Neap Tide

11

A local wind which occurs during the daytime and is caused by the different rates of warming of land waters is a....

sea breeze

12

Wind resulting from a land mass cooling more quickly at night than water is a....

Land Breeze

13

The Scale on a chart is given as 1:5,000,000. This means that....

1 inch is equal to 5,000,00 inches on the earth's surface

14

Which symbol on a weather chart represents a cold front?

Line with blue Triangles

15

what is the weather chart symbol for an occluded front?

Line with purple half circles and triangles

16

The distance along a track line is measured on a Mercator chart by using the what?

Latitude scale nearest the track line

17

What is the most important source of information to be used in correcting charts?

Notice To Mariners

18

Which Government Agency publishes the US Coast Pilot?

National Ocean Service

19

we only use what to measure distance on Nautical Charts?

Latitude

20

Direction on Nautical charts is referred to....

True North

21

True North is different than Magnetic North. The difference is called what?

Variation

22

What is the average of the lower low water height of each tidal day for over 19 years called

Mean lower low water

23

A fathom is how many feet?

6

24

1 minute of Latitude is equal to?

1 nautical mile

25

what Navigation rules govern Block Island Sound?

International

26

The difference in height between the high tide and the low tide is called the what?

Tidal range

27

Most costal areas in the US experience how many high tides and low tides every lunar day?

2

28

what is the outgoing tide called?

Ebb Tide

29

What is the incoming tide along the coast and into the bays and estuaries called?

Flood Tide

30

The Wind pattern that generally influences movement of frontal systems over North America is the what?

Prevailing Westerly's