Position the boat so that one side of its hull lies alongside a dock.
Step2
Locate the shrouds.
Step3
Angle the boat so that the shrouds are within your reach.
Step4
Grab the upper shroud with the hand that's furthest from the cockpit.
Step5
Place the corresponding foot on the hull. If the hull is more than a foot above the dock, you may want to balance the arch of your foot on the rail, rather than placing your foot flat on the deck.
Step6
Pull yourself aboard.
Step7
Find a handhold for your other hand, and grab it as you come onto the deck.
Step8
Place your other foot on the edge of the deck.
Step9
Step over the lifelines, if the boat is so equipped, and onto the deck.
Tips & Warnings
You may need to try boarding larger boats more than once. Be prepared to step back onto the dock if your first attempt fails.
Lighter keelboats may tip somewhat under your weight. Be prepared.