Callum MacLeod
Why knots are a safety skill, not a party trick
Every knot aboard has a job, and most of them have to be tied in a hurry. A bowline that holds a jib sheet in 20 knots of breeze, a cleat hitch that keeps a mooring line fast while the tide runs, a reef knot that stops a flogging sail from thrashing itself to bits: these are the small, repeatable actions that keep a boat safe and a crew calm. The trouble is that we usually learn them in a warm classroom or on a flat pontoon on a still day, then need them when our hands are cold, the deck is heeled and the rope is stiff with salt.
Nothing here is complicated. None of it needs expensive kit. But the knots worth knowing are worth over-learning, so that your fingers can find them without a conversation with your brain.
The bowline: your fixed loop
The bowline makes a loop that will not tighten under load and will not jam so hard you cannot undo it. It is the knot you use for jib sheets, for a bucket lanyard, for a mooring line around a post, for anything that wants a loop.
- Make a small loop in the standing part, about a forearm's length from the end. Decide which side is the "hole".
- Take the working end up through the hole, around behind the standing part, then back down through the hole.
- Keep the mnemonic honest: the rabbit comes out of the hole, round the tree, and back down the hole.
- Dress it before you load it. Pull the standing part and the loop to set the collar, then snug the tail. Aim for at least ten times the rope's diameter left as a tail.
The common failure is an inside-out bowline, which looks nearly right and can spill under a shock load. If the tail ends up outside the loop rather than inside, start again. A cockpit-sized version, tied around the standing part with one hand, is worth practising for man-overboard and rescue work, though that is a skill to learn properly on a course rather than from a paragraph.
Cleats, hitches and the everyday fastenings
Most of a cruising day is spent making lines fast and casting them off, so the cleat hitch deserves more respect than it usually gets. The standard pattern is a full turn around the base of the cleat, then a figure of eight over the horns. For a permanent or load-bearing line, finish with a locking turn: take a bight of the tail and lay it over the far horn, then under the near horn, and pull it tight. That last turn should sit flat and be easy to release with a flick, even after the line has been under load.
For mooring and fenders, two more knots cover nearly everything:
- Round turn and two half hitches. Two turns around the ring or rail takes the strain, then two half hitches secure the tail. It holds under load, is easy to ease out gradually, and does not jam.
- Clove hitch. Quick around a rail or guard wire for fenders and temporary ties. It can slip if the load is intermittent, so treat it as a fair-weather friend.
- Sheet bend. The reliable way to join two ropes of different thickness, such as bending a thin heaving line to a heavy warp. It is the bowline family's cousin and works on the same principle.
Reef knots, and knowing when they are the wrong choice
The reef knot is for tying in a reef, lashing a sail cover, or bundling a halyard. It is a flat knot: left over right, then right over left, with the two ends coming out parallel and sitting neatly against the sail.
Tie it left over right twice and you have a granny knot, which is bulkier, weaker and prone to slipping. If the ends come out at an angle rather than parallel, you have made a granny. Untie it and start again.
A reef knot should never be used to join two lines under load, and it should never be trusted to hold a significant strain on its own. Where a reef line takes real tension, a slipped reef knot, with a bight left in one end for quick release, or two half hitches on top, is the safer habit.
Practising until your hands remember
Skill at knots comes from repetition in realistic conditions, not from reading about them. Short, frequent sessions beat long ones.
- Keep a metre of old, thick line by the sofa and tie ten bowlines while the kettle boils. Thick rope teaches the shape; thin rope then teaches the feel.
- Put gloves on. Then put them on wet. Cold, stiff fingers need a knot that works without fine feeling, which is exactly why the bowline and the cleat hitch are so useful.
- Practise standing up, on a sloping surface, in the dark. Tying by feel in a dim cabin is a genuinely different test.
- Time yourself occasionally. A bowline should take a handful of seconds; a cleat hitch less. Speed matters because the gust will not wait for you.
- Undo every knot you tie, every time. A knot you cannot release is a knot that will eventually be cut.
A short working list for the average boat
If you learn only four things, learn the bowline, the cleat hitch, the round turn and two half hitches, and the reef knot. Add the sheet bend for joining lines and a clove hitch for fenders, and you can handle sheets, halyards, mooring warps, fenders and sail ties. Test each one by loading it gently by hand and watching how it sits, then keep testing it in the conditions you actually sail in. A knot tied well and checked is a quiet piece of confidence, and that is what most of good seamanship feels like.
