Sharp chines on newer boats
- Thread starter sailor5017
- Start date
There are several reasons and effects.
One constant one is that it allows a flatter hull (and floor) while minimizing beam. On boats with chines, if the hull had continued up at the original curve, the boat would be 1-3 feet beamier.
Now on racy boats, this flat bottom helps the boat plane. And the leeward chine in the water acts like a keel, or perhaps more like a strake. I've been on this 12.5 and it planes in 12 knots of breeze.
On more crusing orented boats, it allows a larger floorplan for a given beam. The boat does not plane, but the chine adds some benefit while sailing heeled.
One constant one is that it allows a flatter hull (and floor) while minimizing beam. On boats with chines, if the hull had continued up at the original curve, the boat would be 1-3 feet beamier.
Now on racy boats, this flat bottom helps the boat plane. And the leeward chine in the water acts like a keel, or perhaps more like a strake. I've been on this 12.5 and it planes in 12 knots of breeze.
On more crusing orented boats, it allows a larger floorplan for a given beam. The boat does not plane, but the chine adds some benefit while sailing heeled.
The added benefit Jackdaw mentions on a cruising boat, is that in most conditions, a well designed chined hull will keep the boat from heeling over much beyond (I believe) its 10 to 15 degrees. Chined cruising boats made the Admiral very happy.
Ina,
You are right that these boats LIKE that 10-15 degree angle, but the chine does not actually stop or interrupt the heeling. Here is the CZ (righting) curve of the Pogo... if the chine did help stop heeling at 10-15 degrees, you would expect to see a 'hitch' in the early part of the curve as the chine resisted. As it is, it simply continues up at nice curve.
