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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 & SeamanshipA great introduction to navigation and basic seamanship.
    • Day Skipper TheoryMany of the best skippers started their journey here.
    • Coastal Skipper / Yachtmaster® TheoryComing SoonEssential preparation for the Yachtmaster® practical exam.
    • SRC (VHF) Marine Radio CourseAn essential course for anyone intending to use a marine radio.
  • 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 nauctical, including marinas u0026 training centres. If it exists, we’ve got it listed!
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      We help you navigate through the complex world of training and help find what’s best for you.
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      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 u0026 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 202419th February 2025 Last Updated:19th February 2025
General Nautical Terminology

Even Keel

The balanced and stable positioning of a vessel in the water, where it is neither listing to one side nor pitching forward or aft. 

An “even keel” is a nautical term that describes the ideal state of a vessel when it is perfectly balanced in the water. This means the ship or boat is not leaning (listing) to port or starboard, nor is it excessively bow-heavy or stern-heavy. The term originates from the keel, the structural backbone of a vessel that runs longitudinally along its bottom. When a vessel is on an even keel, its keel is level with the waterline, ensuring optimal stability and performance. This state is crucial for safe navigation, as an uneven keel can compromise the vessel’s handling, speed, and safety, particularly in challenging sea conditions. 

Maintaining an even keel involves careful distribution of weight aboard the vessel, including cargo, fuel, and passengers. For larger ships, ballast systems are often used to adjust the vessel’s trim and ensure balance. For smaller boats, operators may shift gear or passengers to achieve the same effect. Beyond its literal meaning, “even keel” has also been adopted metaphorically to describe emotional or situational stability, reflecting the importance of balance and steadiness in both maritime and everyday contexts. In maritime operations, achieving and maintaining an even keel is a fundamental aspect of seamanship, ensuring the vessel’s safety, efficiency, and comfort for those aboard.

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