The limitations on sails used for racing (at least on the Chesapeake Bay,
the Great Lakes rules are different) are specified in the bylaws of the Chesapeake
Bay Alberg 30 One-Design Association. Here are the highlights.
Mainsail
Dacron cloth, between 5 oz and 7.25 oz per running yard 28.5" wide.
Luff | 31 feet maximum | the P dimension |
Foot | 14 feet 3 inches maximum | the E dimension |
Leech | 33 feet 6 inches maximum |
Midgirth | 8 feet 6 inches maximum |
The mainsail should be marked with the emblem .
Working Jib
Dacron cloth, 7.25 oz maximum.
Luff | 30 feet maximum |
Foot | 10 feet 3 inches maximum |
Leech | 25 feet 9 inches maximum |
Midgirth | no requirements |
Large Genoa (No. 1)
Dacron cloth, between 5 oz. and 6.5 oz.
Luff | 34 feet maximum |
Foot | 19 feet maximum |
Leech | 33 feet 6 inches maximum |
Foot Round | 3 inches maximum |
Small Genoa (No. 2)
Dacron cloth, between 5 oz. and 6.5 oz.
The size of the small genoa (No. 2) shall not be larger than the No. 1 genoa in any dimension.
Spinnaker
Between 0.75 oz. and 1.2 oz.
Luff and Leech | 35 feet 6 inches maximum to underside of swivel |
Girth | 19 feet 4 inches maximum at any point |
The maximum length of spinnaker/whisker poles used when racing shall not exceed 10'9", the maximum "J" dimension.
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Cruising the Chesapeake: A Gunkholer's Guide 4th Edition
My favorite Chesapeake Bay guidebook. While it mentions marinas, it
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location for Beauty/Interest and Protection. This is the guide you need
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