Free DPO Exam Prep
Nautical Institute DP Operator (DPO) Certificate
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DPO Quick Facts
Time to Get Licensed
Several months to a few years across the five-phase NI DP scheme (Phases A-E)
From start to license in hand
Free DPO Prep Tools
113 Practice Questions
DP principles, position references, power redundancy, FMEA, DP classes, thrusters, ASOG/CAM/TAM and operations with detailed explanations
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Get personalised explanations of worst case failure, consequence analysis, reference voting and the Kalman filter
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What You'll Study
15 chapters covering the exam topics in this guide
Introduction & NI Scheme
3 sections
DP Principles Fundamentals
3 sections
Controller, Model & Environmental Sensors
4 sections
GNSS & Acoustic Position References
4 sections
Relative PRS, Selection & Voting
4 sections
Power Generation & PMS
3 sections
Bus Configuration & Power Failures
3 sections
Thrusters & Allocation
3 sections
Control Modes
3 sections
DP Equipment Classes
3 sections
FMEA, Worst Case Failure & Consequence Analysis
3 sections
ASOG, CAM & TAM
3 sections
Capability Plots & Approach Planning
3 sections
Watchkeeping & Industry Guidance
3 sections
Integrated Operations & Assessment Strategy
3 sections
DPO Exam Details
Nautical Institute DP Operator (DPO) Certificate
Administered by The Nautical Institute (NI)
Exam Content Breakdown
Based on the official The Nautical Institute (NI) content outline
DP fundamentals (surge/sway/yaw control), the controller and mathematical model, Kalman filtering, gyrocompass, wind sensor, MRU, UPS, and the NI five-phase certification scheme (Phases A-E)
DGNSS and differential correction, hydroacoustics (HPR/USBL/LBL), light taut wire, laser relative references (Fanbeam/CyScan), radar relative (RadaScan), reference selection, voting and common-mode failure
Diesel-electric power, the power management system, load sharing and load shedding, spinning reserve, open vs closed bus-tie, blackout and blackout recovery, and drive-off vs drift-off
Tunnel, azimuth and retractable thrusters, thrust allocation, forbidden zones, thruster bias, thruster-hull interaction (Coanda), Auto DP, joystick and the independent joystick system
IMO equipment Classes 1/2/3, MSC.1/Circ.1580 and MSC/Circ.645, FMEA and DP trials, worst case failure, consequence analysis, redundancy and sensor voting
ASOG, CAM and TAM, DP capability and footprint plots, weather-optimal heading, watchkeeping and handover, 500 m zone approach, checklists, escape routes, and IMCA M103/M117 guidance
What's Included
15 Chapters
Complete exam coverage
Practice Quizzes
With detailed explanations
Free to Start
No credit card required
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What's Next After the DPO?
After passing the DPO, you can pursue these career paths
STCW Officer of the Watch (Deck)
Deck-officer certificate of competency that underpins eligibility for the DP scheme
DP Maintenance / Technical roles
DP electrical/technical knowledge for engineers supporting DP systems offshore
DPO Exam FAQ
Official The Nautical Institute (NI) Resources
Verify information with these official sources
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