Define the following term/acronyms

Question 1

Latitude/Longitude:

Answer 1

Latitude measured north and south

Longitude is measured east and west

Question 2

Set/Drift:

Answer 2

Set is the direction the ship is being pushed off

Drift is the velocity/speed that the ship is being pushed off

Question 3

GMT/Coordinated Universal Time (UTC):

Answer 3

Greenwich Mean Time(GMT) aka “Zulu” time. It is the solar time measured in Greenwich, England.

Question 4

Time Zones:

Answer 4

There are 25 time zones, covering 24 hours. Each has a letter designator. The only letter to not have a zone designator is “J”.

Question 5

Variation/Deviation:

Answer 5

Variation is the difference in the ships gyro heading and its magnetic heading.

Deviation is the difference in the known local variation.

Question 6

f. IALA(A/B)

Answer 6

International Association of Marine Aids to Navigation and Lighthouse Authority

is a standardized buoyage system utilized in world.

Question 7

Cardinal System

Answer 7

Top marks placed on top of buoys indicating where ships should pass

Question 8

Discuss the different methods of attaining a ship’s position:

Answer 8

a. GPS (GPS 1 and 2)
b. Visual bearings
c. Radar Ranges
d. Celestial Navigation
e. Bathometric soundings.

Question 9

Describe the purpose of range/channel markings:

Answer 9

Two markers at the end of a channel, that when aligned indicate that the ship is on course

Question 10

Advance:

Answer 10

Is the distance the vessel moves in the direction of the original course

Question 11

Pivot Point:

Answer 11

The point on the centerline between the bow and the center of gravity

Question 12

Acceleration/Deceleration:

Answer 12

The rate at which the ship gains speed

Deceleration is the rate at which the ship slows

Question 13

Turning Circle:

Answer 13

The final diameter of a complete 360 degree turn made by the ship

Question 14

True Bearing:

Answer 14

360 degree circle where 000 is true north, 090 is due east, 180 is true south, and 270 is due west.

Question 15

b. Relative Bearing

Answer 15

360 degree circle where the bow of the ship is 000 and the stern is 180.

Question 16

DIW:

Answer 16

Dead in the water.

Question 17

Head On:

Answer 17

When two power driven vessels are meeting on reciprocal or nearly reciprocal courses so as involve risk of collision.

Question 18

e. Crossing:

Answer 18

When two power-driven vessels are crossing so as to involve risk of collision

Question 19

Overtaking:

Answer 19

vessel deemed to be overtaking when coming up with another vessel from a direction more than 22.5 degrees abaft her beam.

Question 20

Stand On:

Answer 20

Must maintain its course and speed

Question 21

Give Way:

Answer 21

Must alter its course and speed to avoid risk of collision with the stand on vessel

Question 22

Collision:

Answer 22

An act or instance of colliding

Question 23

Aground:

Answer 23

Resting or lodged on the bottom of the ocean floor or obstruction.