REQUIRED KNOWLEDGE

This describes the knowledge required for this unit

Maritime regulations related to the determination of a vessels position

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

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

Communicate effectively with other personnel when determining the position of a vessel

Interpret and apply procedures and techniques for determining the position of a vessel

Recognise problems in determining the position of a vessel and take appropriate courses of action and solutions

Carry out calculations required when determining the position of a vessel

Adapt to variations in equipment and related procedures that may occur from one vessel to another used when determining the position of a vessel

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 vessels 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

Determine the times of astronomical events including the times of rising and setting of the sun and meridian passage of the sun

Determine the time period in which stellar observations can be made

Select suitable stars when planning a stellar fix

Determine and plot the position of the vessel using sunrunsun procedures

Determine and plot the position of the vessel from a stellar observations at twilight

Transpose a position or position line from an radio navigation aid to a chart paper and electronic

Determine the set drift and leeway experienced between position fixes

Determine the course and speed made good between positions

Determine the course to steer to regain the planned route or arrive at a waypoint

Project the DR and EP along a planned route

TDMMHA DETERMINE POSITION OF THE VESSEL

TDMMH1607A DETERMINE POSITION OF THE VESSEL

The Evidence Guide provides advice on assessment and must be read in conjunction with the Performance Criteria the Range Statement and the Assessment Guidelines for this Training Package

The Evidence Guide provides advice on assessment and must be read in conjunction with the Performance Criteria, , the Range Statement and the Assessment Guidelines for this Training Package.

Critical aspects of evidence required to demonstrate competency in this unit

Assessment must confirm appropriate knowledge and skills to

a

Fix the position of a commercial vessel using all relevant sources of position fixing data

b

Access use and maintain navigational charts nautical publications and related documentation

c

Communicate effectively with others conducting fixing the position of a vessel

Evidence required for demonstration of consistent performance

a

Performance is demonstrated consistently over a period of time and in a suitable range of contexts

b

Applies underpinning knowledge and skills when

identifying and evaluating navigation problems and determining appropriate navigational solutions

identifying and implementing improvements to navigation procedures

interpreting and applying information derived from navigational equipment and systems

applying required precautions relevant to navigation

fixing the position of the vessel

c

Shows evidence of application of relevant workplace procedures including

relevant sections of applicable maritime regulations

vessels safety management system and related procedures

navigational regulations and hazard prevention policies and procedures

job procedures and navigational instructions

d

Action is taken promptly to report andor rectify accidents and incidents in accordance with statutory requirements and company procedures

e

Work is completed systematically with required attention to detail

f

Recognises and adapts appropriately to cultural differences in the workplace including modes of behaviour and interactions and communication with others

continued

TDMMHA DETERMINE POSITION OF THE VESSEL

TDMMH1607A DETERMINE POSITION OF THE VESSEL

Context of assessment

a

Assessment of competency must comply with the assessment requirements of the relevant maritime regulations

b

Assessment of this unit must be undertaken within relevant marine authority approved and audited arrangements by a registered training organisation

As a minimum assessment of knowledge must be conducted through appropriate writtenoral examinations and

Appropriate practical assessment must occur

i

at the registered training organisation andor

ii

on an appropriate working or training vessel

Specificresourcesrequired for assessment

Access is required to opportunities to

a

obtain and plot fix data using an appropriate vessel or approved marine simulator over an appropriate range of latitudes and navigational circumstances

b

perform celestial observations in a location where the horizon can be viewed

VARIABLE

a.

1

b.

Work is performed:

1

c.

1

d.

Work requires:

1

a

1

b

Position fixing
may occur in conditions of:

1

2

3

VARIABLE

c

1

2

3

4

5

6

7

8

9

10

11

12

13

14

d

Position fixing techniques may include:

1

2

3

4

e

1

2

3

4

5

6

7

8

9

10

VARIABLE

f

Applicable legislation, regulations and codes may include:

1

relevant sections of IMO STCW 95 Code, AMSA Marine Orders, State/Territory maritime regulations, NSCV and USL Code

2