34 BASIC POWERBOATING. SAFETY & RESCUE FOR SAILING INSTRUCTORS
Large-Angle Approach 4
Spring line
3 Shift to neutral. Then turn wheel toward dock and shift to reverse.
2
Turn boat almost parallel to dock.
WIND 1
Approach slowly at mcs at 45º angle.
As the velocity of the wind increases, the power required to maintain minimum control speed (mcs) will have to be increased to overcome the increased drag from windage, which reduces the forward speed of the boat. 1 Approach dock at approximately 45° angle at a minimum control speed that maintains steering control against the wind.
2 When bow is close to dock, turn boat almost parallel to dock, but maintain a small angle to compensate for the wind’s tendency to push bow downwind.
3
Shift to reverse to stop boat, then shift to neutral and secure docklines, turn off engine
2
As bow enters slip, shift to neutral.
1
Approach slowly at mcs and turn to align boat with slip.
3 When bow is a couple of feet from dock, shift into neutral, pausing briefly for the 1-2-3 count, and then shift to reverse, turning wheel toward dock and using a small amount of throttle to bring stern in as the boat stops.
4 As soon as boat is alongside, shift into neutral and quickly tie aft spring line in case it’s needed to hold boat to dock. After other dock lines are tied, turn off engine.
Upwind Approach
In this situation you can use the wind to help slow the boat as you bring it into the slip. Have dock lines ready to help stop the boat moving forward or backward too much in the slip. 1 Approach at minimum control speed (mcs) and make a wide turn to line up boat to slip.
2 As bow starts to enter slip, shift into neutral to slow boat. 3 Reverse to stop boat, then shift to neutral and secure dock lines; turn off engine.
SECURING A BOAT
A powerboat can be tied alongside a dock with two spring lines and single bow and stern lines, or it can be positioned in the middle of a slip with two bow lines and two stern lines.
Table of Contents Large-Angle Approach
Shift to neutral, tie boat to dock, and turn off engine.
In a situation where the wind pushes the boat away from the dock during its approach, you should increase your approach angle to head more into the wind. This increased angle will result in a tighter turn, which will increase the momentum of the swinging stern. If the stern swings too fast, you can prevent it from hitting the dock with a small turn of the wheel away from the dock, as you reverse to stop the boat. As you come alongside, the wind will try to blow the boat away from the dock, so it is important to stop quickly and pass a line (rope) to the dock without delay. The best line to use is one that is fastened to the boat halfway between the bow and stern (amidships), and led aft to a dock cleat. If the boat starts to drift away before the other dock lines are tied, you can put the boat in forward gear at idle rpm and the spring line will bring the boat alongside the dock again and hold it there.
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