M/V Crown Princess · Trackpilot – Heading Control Rudder Limit ... • Alarm sounds when limit...
Transcript of M/V Crown Princess · Trackpilot – Heading Control Rudder Limit ... • Alarm sounds when limit...
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Office of Marine Safety
M/V Crown PrincessM/V Crown Princess
Engineering Factors
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Engineering FactorsEngineering Factors
• Integrated navigation system
• Shallow water effects
• Video study - heel angle estimate
• Voyage data recorder
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Integrated Navigation SystemIntegrated Navigation System
• Radar, electronic chart, autopilot
• Trackpilot modes– Heading– Course– Track
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Trackpilot – Heading ControlTrackpilot – Heading Control
Settings• Rudder economy• Rudder limit
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Trackpilot – Heading ControlTrackpilot – Heading Control
• Rudder economy – precise trackkeeping vs. rudder use
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Trackpilot – Heading ControlTrackpilot – Heading Control
Rudder Limit• Specifies maximum value for the
rudder control system• Alarm sounds when limit is
reached• Lower limit to be set for higher
speed
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High Speed - Shallow Water EffectsHigh Speed - Shallow Water Effects
• Squat – sinkage and trim• Decreased course stability• Hand steering and autopilot affected• Rudder economy setting
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Video Study – Heel Angle EstimateVideo Study – Heel Angle Estimate
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Video Study – Heel Angle EstimateVideo Study – Heel Angle Estimate
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Video Study – Heel Angle EstimateVideo Study – Heel Angle Estimate
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Voyage Data RecorderVoyage Data Recorder• Heel angle not recorded• No requirement to record • Valuable information in certain
accidents
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