Conning Flashcards

(45 cards)

0
Q

What is variation?

A

The angular difference between magnetic and true north.

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1
Q

What does the acronym TVMDC stand for?

A
True (direction, north) 
Variation 
Magnetic 
Deviation 
Compass (direction, degrees)  

Tv makes dull children - Thanks Very Much District Commander

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2
Q

What is deviation?

A

The angular difference between magnetic and compass north, as caused by proximity of ferrous object.

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3
Q

When converting from true to compass direction, is eastern variation added or subtracted from the true (chart) direction?

A

Subtracted. East is least and West is best.

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4
Q

What is the limerick to remember the operation utilized when putting true direction and variation together to come up with magnetic direction?

A

East is least and West is best.

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5
Q

What is a range?

A

Two identifiable objects in a line. Man made such as Silver Islet or natural such as islands.

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6
Q

When going from True to Compass direction, is it correcting or uncorrecting?

A

Uncorrecting. You correct to ‘make it’ True.

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7
Q

When using range markers, how should you correct your course?

A

Pointing at the bottom range.

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8
Q

When going from magnetic to true direction, what is the conversion called?

A

Correcting.

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9
Q

Describe a West cardinal buoy.

A

YBY, flash 9 triangles pointing towards center.

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10
Q

Describe a East cardinal buoy.

A

BYB flashing every 3 seconds. Safe water to East. Two triangles bases together.

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11
Q

Sailing in the dark, you see a white light flashing every six seconds.

A

South cardinal buoy. YB. Two triangles pointing down. Safe water to south.

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12
Q

On the chart you see Q(6)+L Fl 15 s What does that mean?

A

Quick six white flashes plus one long flash every 15 seconds.

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15
Q

What is the difference between conning and navigation?

A

Conning is by eye on the water, navigation should be before you go out on the water, with a chart.

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16
Q

What colour is a starboard buoy?

A

Red

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17
Q

What colour is a port buoy?

A

Green

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18
Q

What hazards are not written on charts?

A

Deadheads, currents, weather, whitewater, dams.

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19
Q

What is piloting?

A

Navigating on small inland lakes and coastal waters. You will therefor always have aids because you will always be able to see land.

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20
Q

How many degrees is west?

21
Q

If magnetic north lies to the east of true north, what is variation said to be?

22
Q

If magnetic north lies to the west of true north, what is variation said to be?

23
Q

Where/what is the lubbers line?

A

Direction you are heading. Parallel to boat centre. A reference line on the compass.

24
Q

What does 360* represent?

A

Nothing it doesn’t exist.

25
Q

What is the difference between a map and a chart?

A

Map is for land, chart is for water.

26
What should you remember when installing a compass?
Parallel to lubbers line. Visible to captain. Well fastened.
27
Where is the prime meridian? Why?
Greenwich. England was most powerful country.
28
What is a meridian?
Longitude.
29
Why can you use meridians to measure distance?
Because they are parallel to the equateur.
30
How many nautical miles are in a minute of latitude?
1
31
What size area does a large scale chart show?
Small area. Close up.
32
What size area does a small scale chart show?
Large area.
33
What do the letters TRS indicate?
Towers
34
Variation is different for each: Area Boat Compass
Boat
35
What is the purpose of a marine compass?
To help a boater find directions
36
When a boat turns, the compass card...
Stays in place. It is gimballed to always point North, the boat moves around it.
37
What is the maximum possible latitude North or South of the equator?
90*
38
What are the imaginary lines parallel to the equator called?
Parallels of latitude.
39
What component of the global grid?
The east-west component.
40
What city does the prime meridian pass through?
Greenwich
41
How are the lines of longitude named?
East or west of Greenwich to 180.
42
What is latitude?
stuff
43
What is longitude
stuff
44
What is the scale used to measure distance of a Mercator chart?
The latitude scale.
47
What side should you pass a white and red Fairway buoy?
Either. Port preferred.
48
What does the limerick 'Red Right Returning' mean?
Keep red (starboard) buoys to the right (starboard) hand side of your boat when returning (entering into) a harbour.