NEW Apache in the Mold
11-28-2007 | 07:35 PM
#22
Registered
Joined: Jun 2006
Posts: 377
Likes: 0
From: Sunland, CA
Longer is smoother
The lighter and stiffer the boat, the harsher the ride. That's physics.
The lighter and stiffer the boat, the faster the ride. That's physics too.
More physics: If two boats weigh the same, the longer and thinner one is smoother riding. Smoothness of ride increases by L/sqrt(L).
A dimensionless ratio of smoothness (vertical accelerations in waves):
32' = 5.65
40' = 6.32 = 14% lower vertical accelerations that a 32' boat
50' = 7.07 = 10% lower vertical accelerations than a 40' boat.
References:
Savitsky, Daniel and Brown, P.W., "Procedures for Hydrodynamic Evaluation of Planing Hulls in Smooth and Rough Water," Marine Technology, Vol 13, No.4., October 1976
Savitsky, Daniel and Gore, Jerry L., "Re-Evaluation of the Planing Hull Form," AIAA Journal of Hydrodynamics, Vol 14, No.2, April 2000.
The lighter and stiffer the boat, the faster the ride. That's physics too.
More physics: If two boats weigh the same, the longer and thinner one is smoother riding. Smoothness of ride increases by L/sqrt(L).
A dimensionless ratio of smoothness (vertical accelerations in waves):
32' = 5.65
40' = 6.32 = 14% lower vertical accelerations that a 32' boat
50' = 7.07 = 10% lower vertical accelerations than a 40' boat.
References:
Savitsky, Daniel and Brown, P.W., "Procedures for Hydrodynamic Evaluation of Planing Hulls in Smooth and Rough Water," Marine Technology, Vol 13, No.4., October 1976
Savitsky, Daniel and Gore, Jerry L., "Re-Evaluation of the Planing Hull Form," AIAA Journal of Hydrodynamics, Vol 14, No.2, April 2000.
11-28-2007 | 07:37 PM
#23
Registered
Joined: Nov 2000
Posts: 6,306
Likes: 1
From: Lake Lanier - N. Georgia
The lighter and stiffer the boat, the harsher the ride. That's physics.
The lighter and stiffer the boat, the faster the ride. That's physics too.
More physics: If two boats weigh the same, the longer and thinner one is smoother riding. Smoothness of ride increases by L/sqrt(L).
A dimensionless ratio of smoothness (vertical accelerations in waves):
32' = 5.65
40' = 6.32 = 14% lower vertical accelerations that a 32' boat
50' = 7.07 = 10% lower vertical accelerations than a 40' boat.
References:
Savitsky, Daniel and Brown, P.W., "Procedures for Hydrodynamic Evaluation of Planing Hulls in Smooth and Rough Water," Marine Technology, Vol 13, No.4., October 1976
Savitsky, Daniel and Gore, Jerry L., "Re-Evaluation of the Planing Hull Form," AIAA Journal of Hydrodynamics, Vol 14, No.2, April 2000.
The lighter and stiffer the boat, the faster the ride. That's physics too.
More physics: If two boats weigh the same, the longer and thinner one is smoother riding. Smoothness of ride increases by L/sqrt(L).
A dimensionless ratio of smoothness (vertical accelerations in waves):
32' = 5.65
40' = 6.32 = 14% lower vertical accelerations that a 32' boat
50' = 7.07 = 10% lower vertical accelerations than a 40' boat.
References:
Savitsky, Daniel and Brown, P.W., "Procedures for Hydrodynamic Evaluation of Planing Hulls in Smooth and Rough Water," Marine Technology, Vol 13, No.4., October 1976
Savitsky, Daniel and Gore, Jerry L., "Re-Evaluation of the Planing Hull Form," AIAA Journal of Hydrodynamics, Vol 14, No.2, April 2000.
11-29-2007 | 12:03 AM
#24
Registered
Joined: Jun 2004
Posts: 74
Likes: 0
From: AZLE, TX
My dad use to build cars and he always said that if you make a car to light forit's class you can always add weight to it and the weight will be be where you want it.
In our case it was always as low to the ground as possible.
That is going to be one awesome boat when it's finished but I bet I couldn't even afford to insure it....LOL
That things gonna have a huge gas tank.
In our case it was always as low to the ground as possible.
That is going to be one awesome boat when it's finished but I bet I couldn't even afford to insure it....LOL
That things gonna have a huge gas tank.
