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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:25th October 20249th September 2025 Last Updated:9th September 2025
General Nautical Terminology

Flaking a Line

The process of neatly laying out a rope or line in a series of back-and-forth folds to prevent tangling and ensure it runs out smoothly when needed.

Flaking a line is an essential skill in marine operations, particularly on sailing vessels, where lines (ropes) are used for various purposes such as hoisting sails, securing the boat, or adjusting rigging. The process involves laying the line down in a controlled, zigzag pattern, usually in a flat, back-and-forth manner, so that it can be quickly and smoothly deployed without knots or tangles. This is especially important in situations where time is critical, such as when adjusting sails or docking.

When a line is flaked, each fold is placed carefully so that the line can run out freely when pulled. This prevents the line from becoming twisted or kinked, which could cause delays or even dangerous situations. For example, if a line is not properly flaked and becomes tangled, it could hinder the raising or lowering of a sail, potentially putting the vessel and crew at risk in challenging conditions.

Flaking is typically done on deck, and the size of the flakes (the individual loops or folds) can vary depending on the length and thickness of the line. It is a simple but effective way to manage lines, ensuring they are ready for immediate use without the need for untangling or re-coiling. Properly flaked lines also help maintain the longevity of the rope by preventing unnecessary wear caused by knots or improper storage.

  • Flaking a sail

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