Spring Line
First, I concur with the suggestion that you attend a good school. In our case, we hired an experienced school trainer for a day, since we knew how to sail, but had never sailed a 27 foot keel boat before.
Our trainer taught us this spring line technique that will work on any slip or dock, whether defined by pilings, or docks:
- Carry a bow line outside the lifelines and any rigging, and drop the coiled end aft of midships on the side deck to the side to which you will tie up the boat.
- Rig a line with a good sized loop (a 2-3 foot diameter) at one end, and the other end made fast to a midships cleat. The loop should stretch toward your stern at a length that will hold your bow off the dock when the spring line is stretched tight.
- Rig the loop to your boat hook so that it hangs from the end hook and one hand about 2 feet in from the hook, while the other hand holds the end of the pole. set the boathook and loop down on the cockpit seat to the side you want to tie up to the dock/finger dock, or catch a piling.
- After thinking through the impact of any wind and current, approach your slip as described in the other posts. I come up the fairway at about two knots, and slow to about one knot as I enter the slip after turning. Wind on the beam will push the bow around, and may require a little more speed to maintain steerage.
- As the boat enters the slip at around one knot, center the rudder, and pick up the boathook with the spring line loop supported by the hook and your hand, and the other hand at the inboard end of the boathook.
- Drop the loop around the cleat of piling at the stern one of your slip, or where you want your stern to end up if you are coming alongside a long dock.
- Slowly increase your forward rpm so that the boat comes to rest against the spring line. Then give it more RPM's. Turn the tiller/wheel in the direction to turn the bow away from the side on which you dropped the spring line. (Pull a tiller toward the dock/piling. Turn the wheel away from it.)
- When the boat comes to rest against the spring line, you will find that you can control the position of your stern within an inch or two with small movements of the tiller/wheel.
- When you get the stern where you want it, leave the helm, step out of the cockpit to the side deck, pick up the bow line, and step onto the dock. The spring line will hold the boat steady for enough time for you to make your way forward and step off if the slip is defined by pilings, and the dock is forward.
- Make your bow line fast to a cleat holding the bow where your want it. You may want to make a stern (breast) line fast to the same cleat/piling that holds your spring line.
- Return to the cockpit and shut down the engine.
- Tie the boat with your standard lines. Our standard is a spring line aft from midships, a spring line forward from midships, and breast lines directly to pilings of the dock from the bow and the stern. When a dock crosses our bow (usual in most slips), we run a second bow line from the side opposite the floating dock or pilings to the main dock.
This approach has worked in all docking situations in the US, and in all weather, including 30 knot winds on the beam, (the hardest approach in my opinion.) (It doesn't work for mooring stern to in the Mediterranean, or for bow in as we found to be the standard in Sweden.) We have used it for our 27 foot Hunter, and for charters from 30 to 37 feet, as well as a 45 foot Moorings catamaran.
Practice makes perfect. It's your boat! When you figure out your system practice it until you are comfortable. Remember to think throughout the impact of winds or current each time you dock, before you begin your approach to the dock!
Fair winds, and following seas.