12npa 50

1. the light of a north cardinal mark signifies how many flashes

Uninterrupted

Three

Six

Nine

2. what does the symbol mean

Anchorage (area)

Anchorage (small vessel)

Anchorage (large vessel)

Anchorage prohibited

3. the light of a south cardinal mark signifies how many flashes in a group

Uninterrupted

Three

Six followed by 1 long flash

Nine

4. the color used for a special mark is

Black and yellow

Red ang black bands

Yellow

Red and white stripes

5. what type of mark when seen during daytime, is colored with red and black horizontal bands

Cardinal marks

Isolated danger mark

Safe water mark

Special mark

6. the light of a west cardinal mark signifies how many flashes in a group

Uninterrupted

Three

Six

Nine

7. the light of an east cardinal mark signifies how many flashes in a groups

Uninterrupted

Three

Six

Nine

8. under IALA B buoyage sustem, a buoy displaying a green light will be left to which of the following

To port

To starboard

Both a and b

Neither a nor b

9. type of mark erected on, or moored on or above, an isolated danger of limited extent is called

Cardinal mark

Isolated danger mark

Safe water mark

Special mark

10. which of the following is the color of the light displayed by a special mark

White

Red

Green

Yellow

11. mark used to indicate that there is navigable water all around the mark is called

Cardinal mark

Isolated danger mark

Safe water mark

Special mark

12. type of cardinal mark the color of which is black above yellow is called

North

South

West

East

13. which of the follwing countries belong to IALA region B

Australia

Europe

Africa

Japan

14. conspicuous objects or characteristics fromation of land whose position is known and which aids the mariner in establishing his position is calle

Clearing mark

Landmark

Night mark

Sea mark

15. under the IALA A buoyage system, a buoy displaying a green light will be left in what direction

To port

To starboard

Both a and b

Neither a nor b

16. which of the following are specially equipped vessels anchored at specific locations to serve as aids to navigation

Tugboats

Light sector

Light ships

Private aids

17. a type of mark wherein the colot is red and white vertical stripes is called

Cardinal mark

Isolated danger mark

Safe water mark

Special mark

18. it is a structure exhibiting a major light designed to serve as an aid to navigation is called

Beacon

Buoys

Lighthouse

Lighship

19. type of mark whose apex points together is called

North

South

West

East

20. what does the smbols means

Light buoy

Position of light

Lighted offshore platform

Aeronautical light

21. characteristic of light wherein the total duration of light in a period is equal to the total duration of darkness is called

Fixed

Flashing

Occulting

Isophase

22. characteristic of light which displays continuously and steadily is called

Occulting

Flashing

Isophase

Fixed

23. when will you rely on the position of floating aids to navigation

During daylight

During clam weather

When inside the harbor

When no fixed aid is avaiable

24. the light of an isolated danger mark signifies how many flashes in a group

Single flash

Two

Three

Six

25. under IALA B buoyage system, a buoy displaying a red light will be left in what direction

To port

To starboard

Both a and b

Neither a nor b

26. type of cardinal mark the color of which is black below yellow is called

North

South

West

East

27. time required for a light to go through a full set is called

Flashing

Period

Occulting

Light phase

28. characteristic of light wherein the total duration of light in a period is longer than the total duration of darkness is called

Fixed

Flashing

Occulting

Isophase

29. if all these land marks are charted, which of them is less reliable

Buoy

Island

Light house

Mountain peak

30. which of the following is a light placed on or near the support of the main light

Subsidiary light

Sector light

Direction light

Leading light

31. the light of a special mark signifies how many flashes in a group

Single flash

Group of five flashes every 20 seconds

Three

Six

32. what does the symbol mean

Light buoy

Aeronautical light

Position of light

Lighted offshore platform

33. characteristic of light wherein the total duration of light in a period is shorter than the total duration of darkness is called

Fixed

Flashing

Occulting

Isophase

34. which of the following is the abbreviation for alternating light

Alt

Alter

Alt lt

Al lt

35. which of the following is the abbreviation for fixed light

F

Fi

Fl

F x L

36. the following are the uses of cardinal marks except

Indicates the deepest water

Indicates a recreation zone

Indicates the safe side

Emphasized a bend

37. which of the following is a light presenting different appearance, over various part of the horizon of interest to maritime navigation

Subsidiary light

Sector light

Direction light

Leading light

38. which of the following is the distance from the position abvoe the surface of the earth from the line of sight to the horizon

Geographic range

Horizon distance

Luminous range

Charted visibility

39. mark used in conjunction with the compass to indicate where the mariner may find the best navigable water is called

Cardinal mark

Isolated danger mark

Safe water mark

Special mark

40. a natural or artificial mark used to assist a vessel in avoiding a particular hazard is called

Sea mark

Land mark

Night mark

Clearing mark

41. what does the symbol AERO mean

Light buoy

Position of light

Lighted offshore platform

Aeronautical ligt

42. what does the symbol wks mean

Wreckage

Wreck always partially submerged

Sunken wreck

Wreck over which depth is known

43. the maximum distance at which a light can be seen under atmospheric condition of the existing visibility is called

Geographic range

Luminous range

Nominal range

Two ranges

44. the following are used of a special mark except

Traffic separation marks

Mid channel buoys

ODAS buoys

Spoil ground marks

45.

Landmark

Triangular beacon

Square beacon

Beacon

46. the diffused glow observed from the light below the horizon due to atmospheric scattering is called

Elevation

Look

Phase

Intensity

47. what does the symbol mean

Light buoy

Position of light

Lighted offshore platform

Aeronautical light

48. a light showing over a very narrow sector, forming a single leading light is called

Subsidiary light

Sector light

Direction light

Leading light

49. the maximum distance at which a light can be seen when under the meteorological conditions of the prevailing visibility is called

Geographic range

Luminous range

Nominal range

Two ranges

50. what does the symbol anch mean

Anchorage (area)

Anchorage (small vessel)

Anchorage (large vessel)

Anchorage prohibited

12npa 50

1. the light of a north cardinal mark signifies how many flashes

2.

What first name or nickname would you like us to use?

2. what does the symbol mean

3. the light of a south cardinal mark signifies how many flashes in a group

4. the color used for a special mark is

5. what type of mark when seen during daytime, is colored with red and black horizontal bands

6. the light of a west cardinal mark signifies how many flashes in a group

7. the light of an east cardinal mark signifies how many flashes in a groups

8. under IALA B buoyage sustem, a buoy displaying a green light will be left to which of the following

9. type of mark erected on, or moored on or above, an isolated danger of limited extent is called

10. which of the following is the color of the light displayed by a special mark

11. mark used to indicate that there is navigable water all around the mark is called

12. type of cardinal mark the color of which is black above yellow is called

13. which of the follwing countries belong to IALA region B

14. conspicuous objects or characteristics fromation of land whose position is known and which aids the mariner in establishing his position is calle

15. under the IALA A buoyage system, a buoy displaying a green light will be left in what direction

16. which of the following are specially equipped vessels anchored at specific locations to serve as aids to navigation

17. a type of mark wherein the colot is red and white vertical stripes is called

18. it is a structure exhibiting a major light designed to serve as an aid to navigation is called

19. type of mark whose apex points together is called

20. what does the smbols means

21. characteristic of light wherein the total duration of light in a period is equal to the total duration of darkness is called

22. characteristic of light which displays continuously and steadily is called

23. when will you rely on the position of floating aids to navigation

24. the light of an isolated danger mark signifies how many flashes in a group

25. under IALA B buoyage system, a buoy displaying a red light will be left in what direction

26. type of cardinal mark the color of which is black below yellow is called

27. time required for a light to go through a full set is called

28. characteristic of light wherein the total duration of light in a period is longer than the total duration of darkness is called

29. if all these land marks are charted, which of them is less reliable

30. which of the following is a light placed on or near the support of the main light

31. the light of a special mark signifies how many flashes in a group

32. what does the symbol mean

33. characteristic of light wherein the total duration of light in a period is shorter than the total duration of darkness is called

34. which of the following is the abbreviation for alternating light

35. which of the following is the abbreviation for fixed light

36. the following are the uses of cardinal marks except

37. which of the following is a light presenting different appearance, over various part of the horizon of interest to maritime navigation

38. which of the following is the distance from the position abvoe the surface of the earth from the line of sight to the horizon

39. mark used in conjunction with the compass to indicate where the mariner may find the best navigable water is called

40. a natural or artificial mark used to assist a vessel in avoiding a particular hazard is called

41. what does the symbol AERO mean

42. what does the symbol wks mean

43. the maximum distance at which a light can be seen under atmospheric condition of the existing visibility is called

44. the following are used of a special mark except

45.

46. the diffused glow observed from the light below the horizon due to atmospheric scattering is called

47. what does the symbol mean

48. a light showing over a very narrow sector, forming a single leading light is called

49. the maximum distance at which a light can be seen when under the meteorological conditions of the prevailing visibility is called

50. what does the symbol anch mean