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Course # Module 2
Boat and Yacht Design


Course # Module 2 Objectives
After completing this course, the student will:

  1. Comprehend and demonstrate by examination the interrelations between hull and superstructure elements as they relate to form, This lesson also examines the interrelationship of various hull and superstructure elements in order to develop a design sense as it applies to form, proportion, balance, and styling.
  2. Be able apply ergonomic principles in planning accommodations in order to design comfortable, attractive, safe, and utilitarian interiors.
  3. Comprehend and demonstrate by examination the physical principles involved in planing and describe how a typical planing hull behaves, Be able to select hull design parameters for efficient planing mode operation, and make performance predictions and speed calculations.
  4. Design a popular size and type V-bottom planing powerboat.
  5. Comprehend and demonstrate by examination the theoretical and practical aspects of sail propulsion and discuss various sailing rigs and the sails that make up a typical inventory, comprehend and analyze sailing yacht lines and compute and apply design ratios. Be able to calculate sail area and evaluate a boat's power to carry sail, and be able to design a properly balanced sail plan and analyze and correct problems in existing boat sail-plan balance.
  6. Be able to calculate required ballast and properly size mast and rigging.
  7. Create and prepare plans and calculations for a popular size cruising or racing multihull vessel.
  8. Prepare preliminary sketches and calculations for a specific design task; analyze a proposed boat on the basis of ergonomics as well as proper hull form for the intended service; prepare the following working drawings based on the preliminaries: Lines, Outboard Profile, Arrangement, Inboard Profile, and Joiner Sections, prepare a set of specified hydrostatic calculations from the faired lines and prepare a performance prediction
  9. Obtain a passing grade on a series of written examinations demonstrating that the student attained the required knowledge subjects presented in this course and can apply it to correctly answering exam questions and problems

Course # Module 2 Goals
As overarching goals of this course, students will:

  • Demonstrate a comprehension of the various elements that go into designing of the outboard profile (side elevation), and be able to apply ergonomic principles in planning interior accommodations,
  • Be able to make a performance prediction for a high speed planing power boat and estimate trim angle, wave making resistance, frictional resistance, and required shaft horse power.
  • Demonstrate ability to solve complex design problems by creating and drawing plans with the required calculations for sailboats, planing boats, and multihulls.

This course prepares the student to work as an assistant to a yacht and boat designer with production boat building companies, or at firms engaged in private practice while continuing his/her studies. It is also the prerequisite to course # Module 3 (the third of four courses in the Yacht & Boat Design sequence).

Course # Module 2 Syllabus
LESSON 13: Profiles (Yacht Exteriors)

  1. Profiles
    Utility, Function, and Regional Design Influences
    Recent Influences
    Trends
  2. Sheerlines
  3. Three Dimensional Effects
  4. Freeboard
  5. Overhangs
  6. Superstructure
  7. Spars and Rigging
  8. Visual Phenomena
  9. Typical Examples

LESSON 14: Interior Design

  1. Identifying Information Relevant to the Yacht Interior
  2. Space Planning for the Yacht Interior
  3. Lighting the Yacht Interior
  4. Construction Methods and Materials for the Yacht Interior

LESSON 15: Design Practicum – Exterior And Interior Design
Prepare the following Drawings for both an approximately 35’ (10.7m) LOA sailboat and a 35’ (10.7m) LOA powerboat:

  1. A set of lines
  2. Outboard Profile and Arrangement
  3. Inboard Profile
  4. Joiner Sections at specified locations

LESSON 16: High Speed Power Boats

  1. Basic Principles
  2. Hull Characteristics which Affect Planing Performance
  3. Speed Calculations
  4. Spray Rails
  5. Outdrives, Surface Propellers, and Rudders
  6. Performance Prediction
  7. Other Types of High Speed Hulls
  8. Lines Plans

LESSON 18: Sailboat Design, Part 1

  1. Theory Of Sails
  2. Sailing Rigs
  3. Power to Carry Sail
  4. Designing a Sail Plan
  5. The affect of lead and other factors on performance.
  6. Sailing yacht lines.

LESSON 19: Sailboat Design, Part 2

  1. Ballast requirements
  2. Design of Mast and other spar
  3. Standing and running rigging design
  4. Design of tangs and chainplates

LESSON 20: Design Practicum
Prepare specified Plans and Calculations and data sheet for a:

  1. 44” LOA ketch
  2. Day sailer between 16’ and 18’ LOA

LESSON 21: Multihull Design

  1. Hull form
  2. Longitudinal distribution of volume
  3. Windward performance
  4. Sails and rigging
  5. Habitability
  6. Construction
  7. Mechanical systems
  8. Power catamarans
  9. Multihull Design Practicum / Preparation of plans and calculations

LESSON 22: Course # Module 2 - Final Exam
Comprehensive Design Practicum consisting of:

  1. Project analysis for a 50’ powerboat
  2. Preliminary sketches and calculations for the boat for instructor approval.
  3. Working drawings and calculation based on approved preliminaries.