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Radar Observer Certificate Exam Prep

Required for offshore operation — the radar endorsement tests plotting, ARPA, and collision avoidance.

Exam Format

50

questions

60 minutes

time limit

70%

passing score

⚠ Primarily practical application — radar plotting and collision avoidance scenarios

About This License

The Radar Observer endorsement is required for any captain operating on ocean or near-coastal routes in reduced visibility. The exam is entirely radar-focused: theory, antenna operation, sea and rain clutter, relative motion plotting, ARPA, and applying radar information to COLREGS collision avoidance decisions. It's a specialized test that rewards systematic practice.

Who this is for

Any captain holding an OUPV or master's license who operates offshore or in areas of restricted visibility where radar is required.

Topics Covered

  • Radar Theory & Operation
  • Radar Plotting & ARPA
  • Collision Avoidance Radar
  • Rules of the Road (COLREGS)
  • Navigation & Chart Reading

Ready to Start Studying?

50 free practice questions and timed exam simulations — no credit card needed. Upgrade to unlock our constantly growing question bank and adaptive practice.

All USCG license levels and endorsements covered under one subscription.