Hey Greg- Glad to hear your revelation to debunk the myth of deep-v stability at rest! While the deep-v is a great water knife at cutting through chop at speed, the shape of the hull comes back to haunt them at rest, drifting, and while trolling. With an essentially flat bottomed boat like the C-Dory (in the rear sections), the flat, box like cross section floats level in the water, resisting the tendency to roll around in the chop and small waves. Big swells, of course, roll any boat. If two or three people move over to one side of the boat, the flat, squarish chined shape of the hull resists rolling, as rolling over would force more boat down into the water, which the bouyancy resists. The flat, square hull stays flat in the water and is relatively stable.
Not so with the deep-v. With the basically upside down triangular shaped underwater part of the hull in the water, it doesn't make any difference to the hull wether the v-sectoion is straight down or tilted to one side or the other. Only after the chines become considerably immersed does the difference in bouyancy begin to supply the forces to right the boat. Make a paper cross-section of the hulls of the two different types of boats, cut them out, draw a line representing the water's surface on a sheet of paper, and play with them visualizing what happens as the two hulls are acted upon by waves. You could also do this with three dimensional models built of blocks of wood in a sink. Same result: Flat bottom rocks a lot less that the deep-v at rest and slow speeds. End of talk by retired science teacher. Sorry for the lecture!!! Fun visiting with you! Joe.
Not so with the deep-v. With the basically upside down triangular shaped underwater part of the hull in the water, it doesn't make any difference to the hull wether the v-sectoion is straight down or tilted to one side or the other. Only after the chines become considerably immersed does the difference in bouyancy begin to supply the forces to right the boat. Make a paper cross-section of the hulls of the two different types of boats, cut them out, draw a line representing the water's surface on a sheet of paper, and play with them visualizing what happens as the two hulls are acted upon by waves. You could also do this with three dimensional models built of blocks of wood in a sink. Same result: Flat bottom rocks a lot less that the deep-v at rest and slow speeds. End of talk by retired science teacher. Sorry for the lecture!!! Fun visiting with you! Joe.