Hull series data

Hi

Does any one know where I can get section data of planing hull series 62?

thanks
anup

 

Maybe this can help you.

 

Sir,
Thank you for the data. But what does Bp/ Bpa mean? And what about sectional areas? If I use a scale and measure the body plan, for fairing it i will still need station areas.

 

Bp = beam or breadth over chines, excluding external spray strips.
Bpa = mean breadth over chines, Ap/Lp
Ap = projected planing bottom area, excluding area of external spray strips
Lp = projected chine length

What I would do is, using these pictures, draw the body lines plan with any CAD/drawing program and calculate with it all the values you need.

 

Bp/ Bpa is around 80% and 120% at stations 0 and 60? what does this actually mean? I am kind of confused as to what Bp and Bpa actually stand for.

 

Sorry if I'm a bit direct but :
What exactly do you need?
Do you know what a chine is?
Do you know what is projected planing bottom area?
Do you know what is the projected chine length?

 

Sir
I am knew to planing hull but I do know what a chine is. I just dont understand the concept of projecting the planing bottom area, chine. What purpose does it serve? And where does Bp, Bpa fit?

 

I thought that, when you asked about "planing hull series 62" you already knew what a planing hull is and you would have a slight idea of how its shapes are and how its dimensions are measured. If not, I recommend that you start studying from the beginning.

 

Yes Sir. Any suggestions on what books i should refer?

 

There are many books that you should read but it depends, fundamentally, of what your current knowledge is. An interesting, easy-to-read book is "The Nature of Boats" by Dave Gerr.

 

The projected planing area is the area enclosed by the chines and transom projected onto a plane parallel to the waterline.

Performance by Design by Donald L Blount is an excellent reference on planing boat design. It's expensive though. https://www.amazon.com/Performance-Design-Hydrodynamics-High-Speed-2014-10-30/dp/B01FIW86AK

 

No, thats not corrct.

 

TANSL, please point out what you think to be not correct, and please post what you think the correct info there should be.

 

From Performance By Design, Donald L Blount, p 311:

"Ap projected area of hull bottom bounded by chines and transom"​

Performance By Design also has a discussion of Ap 0n pp 57-59. Donald Blount was one of the two authors of Resistance Tests of a Systematic Series of Planing Hull Forms which was the original published report on Series 62. It is the source of the Series 62 lines which TANSL provided above.

(Name of paper corrected)

 

Another definition of Ap which is equivalent to Blount's quoted above and the one I provided above:

Ap Projected area on the free surface from the hull, below and including the chine.​

Source: Resistance Tests of a Systematic Series of U.S. Coast Guard Planing Hulls NSWCCD-50-TR-2005/063 December 2005