- Failure to complete a task when required.
- Ignorance of the ships dimensions and behaviour.
- Failure to maintain the sequence of the passage plan, contigency plan or subsequent updates.
- Undetected difference b/w intended track and the track made good.
- Not monitoring manual or au to helm wander.
- Rudder indicators, compasses and course recorders.
- Not monitoring engine controls or indicators.
- Unresolved difference b/w ground speed and rpm.
- Not matching speed to sea conditions.
- Measuring by single technique or measuring by inappropriate technique.
- Unresolved cross track error.
- Not monitoring visibility.
- Not briefing the look out.
- Not searching visually.
- Searching solely by RADAR.
- Not taking compass bearing.
- Not making a RADAR/ARPA plot.
- Making decisions on inadequate knowledge of target behaviour.
- Not displaying lights or sounding signals.
- Not monitoring VHF/MF radio.
- Wrongly applying the COLREGS and being unaware of local regulations & signals.
- Omitting to monitor the protection systems bridge located displays & controls.
- Omitting to inspect the ship.
- Omitting to monitor the location of passengers and location & working of the crew.
- Mistaking the correct identification of a light, landmark or navigational aid visually or on RADAR or on chart.
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