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INT 500gt

The theory course consists of a six-day high-level course with written exams. The practical course consists of a five-day liveaboard power or sail course that teaches navigation skills. Participants in the theory course will gain a deep understanding of navigation, meteorology, and safety at sea. The liveaboard practical course provides an opportunity to apply these skills in a real-world setting while learning to operate a power or sailboat. In addition, candidates will also be evaluated on their knowledge of safety procedures and emergency protocols, as well as their ability to navigate in different weather conditions and handle unexpected situations while at sea. The exam is designed to ensure that candidates are competent and capable sailors who can handle a variety of challenges that may arise during a voyage.

*The course consists of 6 days of astronavigation and worldwide meteorology.


  • The earth and the celestial sphere

  • Charts, latitude and longitude

  • Distance, speed, time & direction

  • The magnetic compass

  • Variation & deviation

  • The sextant

  • Position lines and position fixes

  • Dead reckoning and estimated positions

  • Tides & currents

  • Course to steer to counteract a current

  • Meteorology (Starsights & Moonsights)

  • Pilotage

  • Passage planning

  • Electronic navigation aids

  • Satellite navigation systems

  • International regulations for preventing Collisions at Sea (COLREGS)

  • Ships construction & Ship stability

  • Drydocking

  • Ropework, Towing, Anchoring

  • Emergency procedures

  • Ships power plant

  • General maritime law.


-Advanced power or higher courses

-Basic STCW certificates

-One must hold or obtain a Marine Communications VHF-SRC Radio Operators certificate.

*the theory course must be passed before enrolling in the practical liveaboard course.

Any of our partner schools may take them.


500 Tons, 60miles from the coast


6 Days for sail, 5 days for power

MINIMUM AGE: From 18 years

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