Boating knots: choose the right one

What do you need the line to do?

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  Bowline

  EssentialBeginner

  A fixed end loop that keeps its size under a steady load and is normally easy to untie afterwards.

  Use it for: Use it when a dependable fixed loop must go around a ring, post or sail fitting.

  Checks & common mistakes

  What to check: The collar is snug, the parts lie neatly, and a clearly visible tail remains beyond the knot.

  Common mistake: A short tail or an untightened collar lets the knot work loose as the line moves.

  Keep in mind: It can shake loose while slack or repeatedly loaded and unloaded, so inspect it and follow the boat's backup practice.

  Reference sources

  • Tied Up in Knots
  • Auxiliary Boat Crew Qualification Guide, Volume I
  • National Boating Education Standards: Plus Sailing Technical Report
  • Quick Drill: The Bowline Knot
  • Nudos marineros
  • Cabuyería básica
  • Cercaterm maritime knot terminology

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  Clove hitch

  EssentialBeginner

  A fast adjustable hitch for temporarily fastening a line to a round rail or post.

  Use it for: Use it for a fender or another attended fitting whose height may need quick adjustment.

  Checks & common mistakes

  What to check: The two turns sit together on the round support, with the crossing centred and the hitch pulled snug.

  Common mistake: Treating it as an unattended mooring knot ignores how readily one-sided or changing pull can move it.

  Keep in mind: It can slip or work loose under on-and-off or reversing loads, so use the backup required by the boat's procedure.

  Reference sources

  • Tied Up in Knots
  • Auxiliary Boat Crew Qualification Guide, Volume I
  • National Boating Education Standards: Plus Sailing Technical Report
  • Dogging and Rigging Guide: Knots
  • Nudos marineros
  • Cabuyería básica
  • Cercaterm maritime knot terminology
  • Sailing knot terminology

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  Round turn and two half hitches

  EssentialBeginner

  A round turn takes the strain while two half hitches secure the line to a ring or post.

  Use it for: Use it to make fast to a ring, rail or post when the round turn can first control the load.

  Checks & common mistakes

  What to check: A complete round turn bears on the fitting and both half hitches follow in the same direction with a useful tail.

  Common mistake: Stopping after one half hitch or tying the two in opposite directions leaves an insecure finish.

  Keep in mind: Keep the lead fair and protect the line from chafe where the round turn bears on the fitting.

  Reference sources

  • Auxiliary Boat Crew Qualification Guide, Volume I
  • Boating Basics Guide
  • National Boating Education Standards: Plus Sailing Technical Report
  • Hrvatsko-engleski pomorski rječnik

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  Cleat hitch

  EssentialBeginner

  A cleat hitch secures a working line to a horn cleat while keeping it practical to cast off.

  Use it for: Use it for dock lines and control lines led to a correctly sized horn cleat.

  Checks & common mistakes

  What to check: The base turn and figure eights lie flat around both horns without riding turns or a bulky stack.

  Common mistake: Leading onto the wrong horn or piling on locking turns can make the line slip, pinch or jam.

  Keep in mind: Small or slippery line may need more friction, while excessive turns can hinder release under load.

  Reference sources

  • Auxiliary Boat Crew Qualification Guide, Volume I
  • Boat Crew Handbook — Seamanship Fundamentals
  • National Boating Education Standards: Plus Sailing Technical Report
  • The Common and Controversial Cleat Hitch
  • Nudos marineros

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  Sheet bend

  EssentialBeginner

  A bend for joining two lines, especially when their diameters or stiffness differ.

  Use it for: Use it to extend a line or connect a light heaving line to a larger working line.

  Checks & common mistakes

  What to check: The thicker or stiffer line forms the bight, and both tails emerge together on the same side.

  Common mistake: Putting the tails on opposite sides or using the thinner line for the bight reduces security.

  Keep in mind: The single bend can loosen when lines go slack or differ greatly, so use a double sheet bend when more security is needed.

  Reference sources

  • Tied Up in Knots
  • Auxiliary Boat Crew Qualification Guide, Volume I
  • Dogging and Rigging Guide: Knots
  • Nudos marineros
  • Cabuyería básica

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  Figure-eight stopper

  EssentialBeginner

  A bulky end stopper that helps keep a sheet or halyard from running through a fairlead, block or jammer.

  Use it for: Use it at the free end of a control line when the finished knot is larger than the opening it must stop at.

  Checks & common mistakes

  What to check: Its clear figure-eight shape is dressed tight, with enough tail and enough bulk for the actual fitting.

  Common mistake: Tying it too near the end or confusing this stopper with a load-bearing figure-eight loop defeats the check.

  Keep in mind: This is an end stopper, not an attachment loop, and it can pass through an opening that is too large.

  Reference sources

  • Tied Up in Knots
  • National Boating Education Standards: Plus Sailing Technical Report
  • Cercaterm maritime knot terminology

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  Reef knot

  Beginner

  A flat binding knot for securing two ends of one line around a sail, cover or bundle.

  Use it for: Use it to bind reef points, sail covers or light bundles whose contents support the knot.

  Checks & common mistakes

  What to check: The knot lies flat and symmetrical, with each tail beside its own standing part on both sides.

  Common mistake: Repeating the same overhand direction makes a granny knot, while using it as a bend gives it the wrong job.

  Keep in mind: Never use it to join loaded ropes: it can capsize and spill, especially with unequal or slippery lines.

  Reference sources

  • Tied Up in Knots
  • Auxiliary Boat Crew Qualification Guide, Volume I
  • Nudos marineros
  • Cabuyería básica
  • Cercaterm maritime knot terminology

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  Rolling hitch

  Intermediate

  A directional friction hitch that grips another line or spar when the pull comes from the expected direction.

  Use it for: Use it as a temporary stopper to take strain off a jammed sheet, winch or other loaded line.

  Checks & common mistakes

  What to check: The extra gripping turns face the direction of pull, lie close together, and hold during a cautious test load.

  Common mistake: Facing the gripping turns away from the expected pull makes the hitch slide instead of bite.

  Keep in mind: It may slip on slick modern line or when the pull reverses, so treat it as a controlled temporary grip and monitor it.

  Reference sources

  • Dogging and Rigging Guide: Knots
  • Bluewater Crew Rating Shoreside
  • Glossário Náutico / Nautical Glossary
  • Sailing knot terminology
  • Hrvatsko-engleski pomorski rječnik