Limit of Positive Stability or LPS is the angle from the vertical at which a boat will no longer stay upright but will capsize, becoming inverted, or turtled. It is also known as the Angle of Vanishing Stability or AVS. For example, if a boat with an LPS of 120 degrees rolls past this point, i.e. its mast is already at an angle of 30 degrees below the water, it will continue to roll and be completely upside down in the water. Most sailboats have lead or other heavy materials in their keel at the bottom of their hulls to keep them from capsizing.
A competitive approach to sailing: above all, speed. Relatively small, overcanvassed and overpowered boats, suffering notorious lack of stability, dominate the contemporary racing scene. - C. A. Marchaj
Maybe I should rethink the whole spot boat thing and stick with my orginal idea of building an outrigger sailing canoe.
Marlin sinks boat! Actually, the captain screwed up:
"Not all the details are in, but apparently the captain began backing down on the huge fish, a common practice in big-game fishing when a fish is taking line. He puts the boat in reverse to chase the fish.
One commenter on Marlin Magazine's Facebook post who apparently had some knowledge of the incident said that the captain fell as he was backing down on the fish at full throttle. The boat took on too much water and, finally, there was no correcting the situation.
Marlin Magazine reported that the boat went to the bottom of the sea and everybody on board was rescued by the photo boat. And, of course, the fish got away. "
Those guys are going to have a hell of a fishing tale to tell. For some reason, I don't think the captain will be getting that many charters in the future.
Via Scuttlebutt: Day 1 at Etchells Australian Nationals: Raymond Smith’s St John’s Dance was well placed midway through the final downwind leg when the boat lost control on a wave, broached wildly and snapped the spinnaker pole. Now totally out of control, the spinnaker pulled the yacht down sideways, it filled with water and slowly, painfully slowly, sank to the bottom, leaving just the top half of the mast visible. All three crew emerged unscathed, but the yacht will spend the night on the bottom of Cockburn Sound, forcing a day’s rest on the crew, and effectively snuffing out any chance they had at the national title.