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SAILBOAT KITS
LINE'S DRAWING

Lines Drawing

The lines drawing is the most important drawing in the plans package. It represents a 3 dimensional object, the boats hull, in a 2 dimensional format. All the other drawings receive their information from this drawing.

The lines drawing is used to calculate all the properties of the hull, such as displacement, wetted surface, center of buoyancy, prismatic coefficients to name a few.


The above is a traditional version of the lines drawing created and used by Yacht Designers before the age of Computers. Sadly, the average boat builder will use it little. Lofting by the homebuilders is not required. All the information needed to construct the boat has been pulled from the lines drawing by Metalsailboats.com for you.


Reading the Lines Drawing


The lines drawing has three views:


Profile view - Top Left

Section view - Top Right

Plan view - Bottom Left


The major lines that profile the shape of the boat are the Sheerline, fairbody, keel and transom profile. Along with the lines that profile the hull there are (4) four major groups of curves that are used to define the boat hull in a two dimensional format. They are:


Waterlines - Green

Station Lines - Black

Buttocks Lines - Blue

Chine Lines - Magenta

A special waterline would be the Design waterline in Red


BACK TO "LIST OF DRAWINGS"


Dennis Schaffer, Yacht Designer

Telephone - 617-653-1063

Bézier Curve DESIGN
(The next logical step)


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SBI
SBI!

Building the Bezier 12.5

The Bezier 12.5 is a 16 foot, classic styled aluminum daysailer being built right now.
You can follow it's progress on the button links below.

  About the 12.5 Design
  Design History

  12.5 Archtictural Drawings
  View drawings

PreFabrication:

  Saw Cut
  Longitudinal's

  Roll Formed
  Longitudinal's

  Assembling
  Transverse Frames

  Transom
  Transom Fabrication

  Fabrication of
  The Keel

  Fabrication of
  Assembly of
      Hull Strongback

  Fabrication of
  Bezier Shell Plating


Fabrication of the Hull:

  Framework
  Construction

  New!  Plating the
  True Round Hull Section
      Part I

  New!  Plating the
  True Round Hull Section
      Part II

  New!  Welding the
  True Round Section
      

Current Stage of Construction
Below: