Docking is the moment every boater thinks about on the way back to the marina. Out on open water, a small mistake costs nothing. Near the dock, the same mistake means a scraped hull, a bent rail, or an awkward scramble while everyone on the pier watches. The good news is that a calm, controlled docking is mostly about preparation and speed, not split-second skill.
This guide walks through docking a power boat alongside a pier, from preparing the boat to securing the last line. The same principles apply to backing into a slip, picking up a mooring, or coming alongside another boat.
The golden rule: slow
There's an old saying among boaters: never approach a dock faster than you're willing to hit it. A boat has no brakes. The only way to stop is to put the engine in reverse, and that takes time to work, especially on a heavy boat. At very low speed, a misjudgment means a gentle bump against a fender. At higher speed, it means damage.
Most good dockers use short bursts of power, shifting into gear for a moment and then back to neutral, letting the boat glide. This keeps speed down while still giving the rudder or outdrive enough water flow to steer. If the boat is moving too fast, shift to neutral early. If it's still too fast, a short burst of reverse slows it down.
Prepare before you arrive
Docking goes wrong most often when the crew is still sorting out lines and fenders as the boat arrives. Get everything ready while you're still well away from the dock:
- Decide which side you'll dock on, port (left) or starboard (right), and tell the crew.
- Hang fenders on that side, at a height that will protect the hull where it meets the dock. Low docks and high docks need very different fender heights.
- Prepare dock lines. Attach them to the boat's bow and stern cleats, and lead them outside the rails and back in so they can be handed or thrown to the dock without tangling.
- Brief the crew. Tell them who will handle which line, when to step off (only when the boat is close and nearly stopped), and to never put a hand or foot between the boat and the dock.
- Check the conditions. Watch flags, ripples and other boats to work out which way the wind and current are pushing. See Docking in Wind and Current.
Plan the approach
Before you commit, slow down near the dock and watch what the boat does in neutral. Does it drift toward the dock or away from it? Does the bow fall off downwind? That tells you more than any rule of thumb.
For a typical side-to docking, where the boat ends up parallel to the dock:
- Approach at a shallow angle, roughly 20 to 30 degrees to the dock, aiming for a point about where you want the bow to end up.
- If the wind or current is pushing you onto the dock, approach more parallel and stop a little way off. The conditions will push you in gently.
- If the wind or current is pushing you off the dock, use a steeper angle and plan to get a line on quickly, before the boat blows away.
- Whenever possible, approach into the wind or current, whichever is stronger. Heading into it gives you more control and slows the boat naturally.
Bring it in
- Slow to idle well before the dock. Use bursts of forward gear to maintain steerage.
- Aim the bow toward your landing spot at a shallow angle.
- As the bow nears the dock, turn the wheel away from the dock. On most boats, this swings the stern in toward the dock as you straighten out.
- A short burst of reverse stops the boat alongside, ideally just touching the fenders.
- Get a line on. Once the boat is stopped and close, the crew steps off, or hands a line to someone on the dock, and secures it to a cleat.
If anything isn't right, the approach is too fast, the angle is wrong, or the wind is pushing you somewhere you don't want to go, abort. Back away or circle around and try again. Going around costs a minute. Forcing a bad approach can cost much more.
Secure the boat
The first line is usually the one that controls the boat best in the conditions. In many situations that's a spring line, which can hold the boat alongside while you use the engine to work it in. See Dock Lines and Cleats for how each line works and how to tie a cleat hitch. Then add a bow line, a stern line, and springs as needed.
Adjust the lines so the boat sits against its fenders with a little room to move, then shut down the engine only once the boat is secure.
Single engine vs twin engines
How you steer at low speed depends a lot on the boat:
- Single-engine boats steer with a rudder, or by turning the outdrive or outboard. They need water flowing past the rudder or forward thrust from the drive to turn, and in reverse the stern tends to walk to one side. See Single-Engine Docking and Prop Walk.
- Twin-engine boats can steer using the engines themselves, putting one in forward and the other in reverse to pivot the boat almost in its own length. See Twin-Engine Docking.
- Thrusters, if fitted, can push the bow or stern sideways at low speed. See Bow and Stern Thrusters.
Common mistakes
| Mistake | Result | Fix |
|---|---|---|
| Coming in too fast | A hard hit, or a big burst of reverse that throws the boat off line | Slow down early and use short bursts of power |
| Not reading the conditions | The boat is blown off or onto the dock unexpectedly | Stop near the dock and watch how the boat drifts |
| Fenders and lines not ready | Crew scrambling at the last moment | Prepare everything well before the approach |
| Crew jumping to the dock | Falls, injuries, people in the water | Step off only when the boat is close and nearly stopped |
| Fending off with hands or feet | Crushed fingers or legs | Let the fenders take the load; use a boat hook if needed |
| Refusing to go around | Forcing a bad approach into the dock | Abort early and try again |
Practicing in The Boat Docker
The Boat Docker lets you practice all of this with nothing at stake. You set up a boat like yours, with twin inboards or a single I/O, from 5 to 60 tons, with or without bow and stern thrusters. Then choose the wind, current and gusts and bring it in. Once you're alongside, you hang fenders and run lines to the cleats to finish the dock.
Each dock is scored on how well it's secured (three or more lines scores best), whether the lines are snug, whether your approach was clean with no contact, and how quickly you got it done. Docking in moderate or strong wind and current earns a bonus on top. Start with the Standard Dock in calm water, and see the Fenders & Lines and Scoring training pages for the controls.