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USCG Exam Prep

Free practice for every module of the USCG National Maritime Center (NMC) deck officer examination — Rules of the Road, Chart Navigation, Safety, Deck General (stability and cargo), and Meteorology. Games are designed for OUPV (6-Pack), Master 25–200 GRT, Master 500–1600 GRT, Mate, and entry-level STCW candidates.

📚 USCG Exam Prep 10-question timed quizzes across all five exam modules. Identify your weakest module fast. ⚓ COLREGS Quiz Rules of the Road: crossing, overtaking, head-on, restricted visibility, right of way in real time. 🚦 Night Lights & Shapes Navigation lights and day shapes — every COLREGS Rules 20–31 vessel type with SVG arc diagrams. ⭐ Celestial Fix Sight reduction, sextant corrections, meridian passage — the hardest USCG Nav General module. ⚖️ Stability Calculator GM, free surface correction, list vs. loll, righting lever — Deck General stability module. 🌊 Tide Tables Rule of Twelfths, NOAA tide format, secondary ports — the Nav Problems tidal module. 🔤 Phonetic Alphabet NATO alphabet Alfa–Zulu: the easiest exam topic — drill it until it's automatic. 📯 Sound Signals COLREGS Rules 34–35: whistle signals in sight and in restricted visibility.

About the USCG deck officer examination

The United States Coast Guard National Maritime Center (NMC) administers written examinations for all federal deck officer licences — from the Operator of Uninspected Passenger Vessels (OUPV / "6-Pack") to the Master of Steam or Motor Vessels of any gross tons upon oceans. The exam is modular: candidates sit only the modules relevant to their endorsement grade, but all modules draw from the same official NMC question bank.

The five main deck officer exam modules are:

  • Rules of the Road: COLREGS and Inland Rules — typically 30–50 questions depending on licence grade. The highest-weighted module.
  • Chart Navigation (Nav Problems): dead reckoning, position fixing, tidal calculations, current vectors, celestial sights. Requires chart plotting on many exams.
  • Safety: SOLAS, MARPOL, fire-fighting, survival craft, personal protective equipment, medical first aid.
  • Deck General: stability, cargo operations, anchoring, mooring, meteorology, and vessel systems depending on grade.
  • Meteorology: weather patterns, Beaufort scale, GRIB reading, routing decisions. Part of Deck General at lower grades.

Every game in this category is cross-referenced to the NMC question bank topics. The USCG Exam Prep game covers all five modules in a single interface — use it to identify your weak areas, then drill each specific topic with the dedicated game for that subject.

USCG licence grades covered

  • OUPV (Operator of Uninspected Passenger Vessels / 6-Pack): up to 6 passengers for hire, up to 100 GRT
  • Master 25–100 GRT Near Coastal / Inland
  • Master 200 GRT Near Coastal / Inland
  • Master 500 GRT Oceans
  • Master 1,600 GRT Oceans
  • Mate 200 GRT / 500 GRT / 1,600 GRT
  • STCW Officer of the Watch (OOW) endorsement