There are two different sized mains on the C&C 30. In the attached document it stats the change was made at hull 507, however, I seem to recall the change was made after hull number 510. The boom was raised 1 foot on the mast to provide more room accessing the boat with a dodger in place as well as an extra foot of headroom in the cockpit. The boats made after hull number 510 have a smaller main.
If your measurement is supposed to be 34 then that is the number. Going 6 inches longer because that room is there at the top generally leads to two issues. (1&2)
1. Main contacts the backstay and hauls out battens
2. Excessive wear at contact point on backstay (if it does)
3. Loose ...if "P", the luff, is too long the sail may not raise tight. There are dangers associated with slack sails and they are often over looked. Sailing on an otherwise comfortable day with sails fully raise and getting hit with a sudden gust (with a loose luff) is a good way to have your spreaders slammed into the water. Not good to have a luff too long. (Racers know there are times we slacken luffs but for new boat owners...sails up tight)..even when reefed..that luff is tight.
If your measurement is supposed to be 34 then that is the number. Going 6 inches longer because that room is there at the top generally leads to two issues. (1&2)
1. Main contacts the backstay and hauls out battens
2. Excessive wear at contact point on backstay (if it does)
3. Loose ...if "P", the luff, is too long the sail may not raise tight. There are dangers associated with slack sails and they are often over looked. Sailing on an otherwise comfortable day with sails fully raise and getting hit with a sudden gust (with a loose luff) is a good way to have your spreaders slammed into the water. Not good to have a luff too long. (Racers know there are times we slacken luffs but for new boat owners...sails up tight)..even when reefed..that luff is tight.
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