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: Australian or local tide tables and sailing directions basic meteorological terms characteristics of various weather systems affecting Australian coast charted information including that in the title block, Zone Of Confidence diagrams and datums procedures to determine compass accuracy: from transit bearings or by bearings taken from a known position by azimuth, amplitude or other method appropriate to the standards of watchkeeping practice when beyond sight of land determining times and heights of: high and low water from Australian or local tide tables for any port and the relevance of chart datum tides at standard and secondary ports for any state of tide rhumb lines, plane and great circle sailings effects of current and of leeway on course and speed of vessel (without calculations)and recognising the presence of either or both factors finding variation from chart fixing vessel position by: simultaneous bearings, transits of coastal features, and by running fix radar ranges and bearings information given on a chart or plan, particularly buoyage, hazards to navigation, depth and nature of bottom, lights, tides and tidal streams interpreting set and drift of current from information available on chart measuring distance on a chart meteorological instruments and their use obtaining bearings on small vessels recognition of coastal features relating coastal features to a chart relationship between: latitude and longitude compass, magnetic, true and gyro courses and bearings relative bearings selection of suitable: anchorage or shelter points for bearings sound signals such as: appropriate signals for alteration of course to port or starboard danger warnings moving astern sources of weather forecasts and interpretation of that information in simple terms traffic separation schemes tropical revolving storms and the weather associated with such storms use and application of ship routeing services use and limitations on use of electronic position fixing equipment found on small vessels use of a deviation card without mathematical interpolation using a single position line using modern electronic navigational aids to determine vessel position using rhumb line navigation using soundings in determining position using terrestrial observations to determine vessel position individually or in combination with other methods weather conditions affecting Australian coast and liable to endanger vessel work health and safety (WHS)/occupational health and safety (OHS) requirements and work practices. |