Knots Every Beginner Boater Should Practise

Why knots matter more on tidal waters

On a quiet canal or a landlocked lake, a poorly tied knot might mean a bruised ego and a wet boot. On tidal waters around the UK coast, it can mean a drifting boat, a jammed line, or a dangerous scramble on a slippery pontoon. The tide can rise or fall several metres in a few hours, putting enormous strain on mooring lines one minute and leaving them slack the next. A knot that holds tight under load but refuses to undo when you need it is worse than useless. The three knots below — the round turn and two half hitches, the cleat hitch, and the bowline — will cover almost every situation a beginner boater faces when launching a small craft, from a dinghy to a small fishing boat. Practise them on dry land until your hands remember them, then test them in real conditions.

The round turn and two half hitches

This is the workhorse for mooring to a ring, a bollard, or a sturdy post. It is strong, adjustable under load, and easy to undo even after a heavy pull. Start by passing the working end of your rope around the ring or post twice — that is the round turn. Those two turns take the strain, so you are not fighting the boat while you finish the knot. Then tie a half hitch: take the working end around the standing part and pass it through the loop you have created. Repeat for a second half hitch. Push both hitches snug against the round turn.

Why it suits tidal waters: you can slacken or tighten the line without untying the whole knot. If the tide is rising, keep an eye on the line and ease it out; if falling, take up the slack. Use a rope with a bit of stretch, such as nylon, for mooring lines, and leave a generous tail — at least a few inches — so the hitches do not shake loose. A common mistake is to tie the half hitches over the standing part rather than around it, which weakens the knot. Check that both hitches are identical and tidy.

The cleat hitch

Pontoons, jetties, and many small boats have cleats — those T-shaped metal fittings. The cleat hitch is fast, secure, and kind to your rope. Begin with a full turn around the base of the cleat, then take the rope diagonally over the top and around the opposite horn in a figure-of-eight. Do this once or twice, depending on the load, then finish with a locking hitch: pass the rope under the last figure-of-eight and over the top horn, then pull it tight. The locking hitch is what stops the knot from creeping.

Do not simply wrap the rope around and around the cleat in the same direction. That creates a spiral that can jam solid after a heavy load, and you will be sawing at it with a knife while the tide turns. Also avoid too many figure-of-eights — two is usually plenty for a small craft. If the cleat is crowded, use a longer line or a different attachment point. In cold, wet weather, a cleat hitch can be tied with gloves on, which is a real advantage when your fingers are numb.

The bowline

The bowline creates a fixed loop that will not slip or tighten under load, yet it unties easily once the tension is off. It is the knot for making a loop around a post, attaching a painter to a bow eye, or creating a temporary harness point. The traditional way to remember it: make a small loop in the standing part, then bring the working end up through the loop, around behind the standing part, and back down through the loop. Think of a rabbit coming out of its hole, around the tree, and back down the hole.

For tidal work, the bowline is ideal when you need a loop that stays the same size — for example, a mooring line that you drop over a bollard and then tie off elsewhere. It is not a knot for tying directly to a cleat; use the cleat hitch for that. Test your bowline by loading it firmly and then checking that the loop has not deformed. A well-tied bowline will hold a massive load, but a poorly dressed one — where the loops cross incorrectly — can spill. Take the extra second to dress it neatly, with the tail inside the loop.

Practising and testing your knots

Buy a few metres of cheap rope — 8mm to 12mm is a good size for small craft — and keep it by the TV. Tie each knot ten times in a row, then ten times with your eyes closed. Then try with wet hands, with gloves, and in low light. The goal is not speed but reliability: you want to tie a knot correctly without thinking, even when a gust is pushing the boat off the pontoon.

• Load test safely. Tie your knot to a fixed point, attach a weight or have a friend pull steadily, then inspect for slippage. Never put yourself in line with a loaded rope.
• Check your tails. Leave at least four times the rope diameter as a tail after any knot. Tidal currents and wash can work a short tail loose.
• Adjust for the tide. Before you leave the boat, note the tide direction and range. If you are leaving it moored, use a longer line than you think you need and check it at the next tide change.
• Learn to undo as well as tie. A knot that cannot be undone is a hazard. Practise releasing each knot under light tension — that is the skill that saves fingers and tempers.

Finally, carry a spare length of rope and a sharp knife on board. Even the best knot can jam if a line has been abused, and a clean cut is sometimes the safest way to free a boat. With these three knots in your muscle memory, you will launch and moor with far more confidence — whatever the tide is doing.