Navigation

Question 1

Describe degrees of arch

Answer 1

Measurements along earths meridians in perfect circles

Question 2

What are 4 ways of expressing direction

Answer 2

True bearing
Compass bearing
Relative bearing
Reciprocal bearing

Question 3

Describe dead reckoning

Answer 3

Position is determined through the direction and distance a ship has traveled from a known point of departure

Question 4

Describe latitude and longitude

Answer 4

Parallels and meridians runs either north south east to west

Question 5

Describe election navigation

Answer 5

Position is determined much as it is in piloting except that the bearing and distance are obtained by electronic means

Question 6

Parts of maneuver board

Answer 6

Radial straight lines
Two sets of bearings printed out
Ratio scales on left and right side

Question 7

Describe a parallel

Answer 7

Parallels are imaginary parallel circles around the earth 180° of arch

Question 8

5:1 scale is for distances between what and what

Answer 8

40000 to 50000

Question 9

Characteristics of navigation fixes

Answer 9

A line of bearing and distant arc
Two or more lines of bearing
Two or more distant arc
Range and a line of bearing
A range and a distant arc

Question 10

3:1 scale is for distances between what and what

Answer 10

20000 to 30000

Question 11

Two types of piloting instruments

Answer 11

Bearing circle

Telescope alidade

Question 12

3 minute rule what is it

Answer 12

Shortcut to determine speed or distance by using how many yards in 3 minutes

Question 13

Piloting record log

Answer 13

Bearings, ranges, and sounding

Question 14

Describe line of position

Answer 14

Two or more lines intersect reference to a land mark by range bearing and distance arcs

Question 15

Describe Celestial navigation

Answer 15

Position is found by locating a ship with relation to the stars needs a sextant

Question 16

Describe relative motion

Answer 16

Apparent movement that takes place between two independently moving ships

Question 17

Name 4 types of determining ships position

Answer 17

Piloting
dead reckoning
Celestial navigation
electronic navigation

Question 18

2:1 scale is for distances between what and what

Answer 18

10000 to 20000

Question 19

What are the lines called that travel from north to South Pole?

Answer 19

Meridians

Question 20

At the equator, each meridian is how far apart

Answer 20

60 minutes
Or
3600 seconds

Question 21

4:1 scale is for distances between what and what

Answer 21

30000 to 40000

Question 22

1:1 scale is for distances between what and what

Answer 22

0 to 10000

Question 23

Describe a maneuvering boards

Answer 23

Solves relative movement between ships

Question 24

Greenwich meridian is number what?

Answer 24

Zero

Question 25

Describe piloting navigation

Answer 25

Position is determined by bearing or distance from visible objects on the earths surface or by sounding