Fast Track to Sailing by Steve Colgate & Doris Colgate

Author:Steve Colgate & Doris Colgate
Language: eng
Format: epub, pdf
Publisher: McGraw-Hill Education
Published: 2009-03-17T04:00:00+00:00

Although the center of lateral resistance is difficult to change underway, it can be altered by:

Adding weight to immerse the bow more deeply—CLR moves forward

Adding weight to immerse the stern more deeply—CLR moves aft

Figure 5-1. When the center of effort (CE) is directly above the center of lateral resistance (CLR), a boat is usually in balance.

weight toward the bow, the CLR moves forward. If you add or move weight toward the stern, the CLR moves aft. If you sail a centerboard boat, the CLR moves aft when the board is raised partway (assuming it pivots aft when raised).

Now picture a model sailboat complete with sails, like a weather vane on top of a roof pivoting on its CLR. When the CE is directly above the CLR, the boat is in balance and won't pivot in the wind. However, if you place more sail area toward the bow of the boat, the CE moves forward of the CLR, and the bow of the boat tends to pivot to leeward, away from the wind. If you move the CE behind the CLR by placing more sail area near the stern of the boat, the bow pivots to windward, toward the wind.

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