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Elements and Performance Criteria
Range Statement
Performance Evidence
Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria on at least one occasion and include:accurately measuring and observing weather conditionsaccurately preparing calculations and measurements of navigational informationadjusting steering controls for optimum performancecalculating courses using plane, Mercator and great circle sailing (GCS) methodschanging over from manual to automatic control and vice versachecking reliability of information obtained from primary method of position fixing at appropriate intervalscorrectly interpreting and applying meteorological informationdetermining errors in magnetic and gyrocompasses, and correctly applying to courses and bearingsdetermining errors of magnetic and gyrocompasses using celestial and terrestrial means, and allowing for such errorsdetermining vessel position by use of:aids to navigation, including lighthouses, beacons and buoysdead reckoning (DR), taking into account winds, tides, currents and estimated speedelectronic navigational aidslandmarksrising and dipping distances of lights and the use of horizontal anglesdetermining vessel position within the limits of acceptable instrument/system errorsestimating position using DRinterpreting nautical charts and publications, including symbols and other chart informationmaintaining charts and publications by applying up-to-date corrections to both paper and electronic charts and publicationsoperating echo-sounders and applying the information correctlyproducing accurate and reliable informationreading the aneroid barometer and interpreting the information obtainedselecting and applying primary position fixing method, including:celestial observationsradar ranges or bearingsradio navigation aidsrunning fixsimultaneous bearings or transits of coastal featuressoundings to determine positionterrestrial observationsselecting mode of steering most suitable for prevailing weather, sea and traffic conditions and intended manoeuvres, including:automatic pilotelectric systemshydraulic systemsusing and interpreting information obtained from shipborne meteorological instrumentsusing celestial bodies to determine vessel positionusing navigational charts, nautical publications and related documentation, including:Nautical Almanacnautical tablesNotices to Marinerspaper chartsradio navigational warningssailing directionstemporary warning noticestide tablesvessel routeing informationweather reports and warnings. |
Knowledge Evidence
Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria and include knowledge of: celestial observations and calculations, including:celestial sphere and equinoctial system of co-ordinatescompass error using azimuth and amplitude daily motion and horizontal system of co-ordinateshour anglelatitude by meridian altitudepole star observationssextant and altitude corrections solar systemtime and equation of timecharacteristics of the various weather systems, reporting procedures and recording systemscharted information, including that in the title block, zones of confidence diagrams and datumscompass error from transit bearings or by bearings taken from a known positiontimes and heights of high and low water from Australian or local tide tables for primary and secondary ports and the relevance of chart datumeffects of current and leeway on the course and speed of the vessel (without calculations)finding the variation from the chartfixing vessel position by:radar ranges and bearingssimultaneous bearings, transits of coastal features, and running fixhazards, including:restricted visibilityshallow watertrafficunlit beaconsinterpreting the set and drift of the current from information available on the chartmaintaining information in a navigational log and voyage recordsmeasuring distance on a chartmeteorological instruments and their usemeteorological termsnautical charts and publicationsnavigation systems, performance checks and tests to comply with manufacturers’ recommendations and good navigation practiceplane, Mercator and GCS concepts and calculationsprinciples of magnetic and gyrocompasses and fluxgate compassrelationship between compass, magnetic, true and gyro-courses and bearingsrelative bearingsselection of suitable points for bearingssources of weather forecasts and the interpretation of that informationsteering control systems, including operating procedurestheory of tidesuse and limitations on the use of electronic position fixing equipment, including:augmented satellite systemsenhance loran-C systemglobal navigation satellite system (GNSS) and Galileoglobal navigation system (GNS) and global positioning system (GPS) loran-C systemuse of a deviation card using a single position line to assist in clearing dangersusing modern electronic navigational aids to determine vessel positionusing meteorological information available, including:atmospheric pressurecloud precipitationrecording and reporting weather observationsstructure of depressionstropical revolving storms and other pressure systemsvisibilityweather services for shippingwind and other pressure systems over the oceanusing soundings in determining positionusing terrestrial observations to determine vessel position individually or in combination with other methodswork health and safety (WHS)/occupational health and safety (OHS) requirements and work practices. |