REQUIRED KNOWLEDGE |
This describes the knowledge required for this unit.
|
1
| Maritime regulations related to the determination of a vessel's position
|
2
| Principles and procedures for position fixing:
|
| a
| methods used to approximate to the shape of the earth
|
| b
| marine coordinate and distance measuring systems
|
| c
| marine chart projections and their uses and limitations
|
| d
| relationship between true, magnetic, compass and gyro courses
|
| e
| causes of variation, deviation and gyro compass error
|
| f
| factors affecting the accuracy of position lines obtained from various sources
|
| g
| standard chartwork symbols
|
2
| Principles and procedures for position fixing (continued):
|
| h
| common methods of time measurement
|
| i
| the correlation between arc and time
|
| j
| elements of the celestial coordinate systems and spherical triangles
|
| k
| concepts of hour angle
|
| l
| procedures for preparing for stellar observations
|
| m
| concepts of intercept
|
| n
| special techniques required for navigation in high latitudes
|
REQUIRED SKILLS |
This describes the basic skills required for this unit.
|
1
| Communicate effectively with other personnel when determining the position of a vessel
|
2
| Interpret and apply procedures and techniques for determining the position of a vessel
|
3
| Recognise problems in determining the position of a vessel and take appropriate courses of action and solutions
|
4
| Carry out calculations required when determining the position of a vessel
|
5
| Adapt to variations in equipment and related procedures that may occur from one vessel to another used when determining the position of a vessel
|
6
| Apply position lines or fixes onto a nautical chart:, including:
|
| a
| determining variation, deviation, magnetic and gyro compass error by terrestrial and celestial methods
|
| b
| observing visual bearings
|
| c
| determining the bearing and range of a radar conspicuous target
|
| d
| determining the rising and dipping distance of a lighthouse
|
| e
| plotting true bearings on a chart
|
| f
| plotting radar ranges on a chart
|
| g
| plotting a running fix on a chart allowing for set, drift and leeway
|
| h
| plotting the vessel's position using horizontal angles
|
| i
| assessing a fix for accuracy with respect to the size of the 'cocked hat'
|
| j
| extracting data from the Nautical Almanac
|
7
| Determine the times of astronomical events, including the times of rising and setting of the sun, and meridian passage of the sun
|
8
| Determine the time period in which stellar observations can be made
|
9
| Select suitable stars when planning a stellar fix
|
10
| Determine and plot the position of the vessel using sun-run-sun procedures
|
11
| Determine and plot the position of the vessel from a stellar observations at twilight
|
12
| Transpose a position or position line from an radio navigation aid to a chart (paper and electronic)
|
13
| Determine the set drift and leeway experienced between position fixes
|
14
| Determine the course and speed made good between positions
|
15
| Determine the course to steer to regain the planned route or arrive at a waypoint
|
16
| Project the DR and EP along a planned route
|