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Nautical Know How
  • Our Courses

      All our courses are engaging, interactive and fun! Whether formal training or simply looking to brush up, we take online learning to the next level.

      • Sailing EssentialsFreeA free course great for anyone who spends time on the water.
      • Essential Navigation & SeamanshipRYA course for beginners. Learn charts, tides, pilotage, and core seamanship with simple practice tasks.
      • Day Skipper TheoryMost PopularRYA course for inshore skippers. Plan day passages using chartwork, tides, weather, and COLREGs.
      • Coastal Skipper / Yachtmaster® TheoryComing SoonRYA course for advanced navigation and passage planning. Work with secondary ports, tidal streams, and offshore weather.
      • SRC (VHF) Marine Radio CourseRYA Short Range Certificate radio course. Study online, then take the practical exam with an RYA assessor.
  • Directory

      Are you looking for something nautical related? Our directory is an extensive list of courses and places associated with the marine industry. Hop over and search now.

      • Places
        Find anywhere nautical, including marinas & training centres. If it exists, we’ve got it listed!
      • Courses
        We help you navigate through the complex world of training and help find what’s best for you.
  • Know-How

      We believe every day’s a school day on a boat! That’s why we built Nautical Know-How, dedicated to answering your questions. Even better, if it can’t answer your question immediately, you can request it, and we’ll add it to our knowledge base.

      • Nautical Terms & Terminology
        Understanding the language of the marine world is like trying to learn a pirate’s secret code while juggling fish. Let us explain why a sheet isn’t for your bed, why “heave ho” doesn’t mean throw up (most of the time), and why “dead reckoning” is surprisingly less ominous than it sounds.
      • Why do we have tides?
        Have you ever wondered what causes the tides? Check out this video, which introduces the forces that create the tides we experience on Earth.
      • What causes our weather?
        A video introducing the drivers behind our weather, part of our RYA Day Skipper & RYA Coastal Skipper / Yachtmaster® Offshore theory courses.
      • Buoyage Flashcards
        Flashcards designed to help remember the buoys in the IALA system. If you want to learn them in detail, our module ‘Getting in and out of harbour‘, covers the IALA system and different buoys used.
      • Interactive Rule Book (COLREGs / IRPCS)
        Whether you’re a novice sailor or a seasoned skipper, we can help you navigate the IRPCS confidently and clearly. Our easy-to-use, easy-to-understand, plain English rule book with helpful interpretations of what each rule means.
      • The Salty Sea Blog
        From salty old sea dogs to fresh-faced deckhands, this blog is for anyone who finds peace, adventure, and a bit of mischief on the water. So hoist the main, set your course, and let’s sail into the stories, lessons, and musings that make life on the sea so irresistible.
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Published:24th February 202524th February 2025 Last Updated:24th February 2025
General Nautical Terminology

International Certificate of Competence (ICC)

An official document that certifies a person’s ability to operate a pleasure craft in countries that recognise it. 

The International Certificate of Competence (ICC) is a standardised qualification that demonstrates a boater’s competency to operate a pleasure craft in international waters where it is recognised. It is issued by authorised national authorities and is often required when chartering or using a boat abroad, particularly in European countries that adhere to United Nations Economic Commission for Europe (UNECE) Resolution 40. 

The ICC covers various categories of vessels, including powerboats and sailing yachts, and may include inland or coastal endorsements depending on the applicant’s qualifications and the type of assessment undertaken. To obtain an ICC, individuals typically need to pass a practical and/or theoretical examination or hold an equivalent national qualification that meets the required standards. 

While not universally recognised, the ICC is widely accepted in many countries as proof of boating competence. It is particularly useful for those wishing to navigate foreign waters without encountering legal or insurance-related difficulties. The certificate helps ensure that boat operators have the necessary skills and knowledge to handle a vessel safely and responsibly.

Related Content:
  • Do I Need a Licence to Skipper a Yacht?
  • How to obtain an International Certificate of Competence (ICC)
  • Pass Your RYA Day Skipper Theory First Time
  • RYA theory exam invigilation, explained
    Definitive guide to RYA theory exam invigilation for Day Skipper, Coastal/Yachtmaster, and Ocean, when it’s required, how to book, costs, and what to bring.
  • Sailing the Ionian: A Lazy Cruiser’s Dream Route (Even If You’ve Never Sailed Before)

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