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Naval Architecture & Ocean Engineering
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EN247: Principles of Naval Architecture

Catalog Description

EN247 Principles of Naval Architecture (0-4-2).

This course, which is intended for midshipmen majoring in naval architecture, provides an overview of topics paramount to ship design. Topics include introductions to engineering design, engineering graphics, numerical methods, buoyancy, and ship structures. A design project is used to provide students with a hands-on experience in designing a simple vessel.

Prereq: ENA major or approval of NAOE department chair

Textbook

  1. How to Design a Boat, by John Teale, 2003
  2. Understanding Boat Design, by Ted Brewer, 1993

References

  1. Benford, Harry, Naval Architecture for non-Naval Architects, Society of Naval Architects and Marine Engineers, New Jersey, 1991.
  2. Society of Naval Architects and Marine Engineers, Principles of Naval Architecture (3 Vols.), Ship Design and Construction, Ship Structural Design, and Fiberglass Boat Design and Construction.
  3. Blank, D.A., A.E. Bock, and D.J. Richardson, Introduction to Naval Engineering, 2nd Ed., Naval Institute Press, Annapolis, MD. 1986
  4. Ertas, A., and J.C. Jones, The Engineering Design Process, John Wiley and Sons, Inc., New York, 1993
  5. Gillmer, T.C., and B. Johnson, Introduction to Naval Architecture, (3rd Printing), Naval Institute Press, Annapolis, MD. 1987.

Goals

  1. Describe the ship design process.
  2. Develop a ship’s lines drawing, general arrangements drawing and midship’s construction drawing for a simple design.
  3. Describe Archimedes’ Principle, and utilize it to determine the waterline at which a ship will float. Calculate the volume and center of volume for a ship-like shape given a set of ship’s lines and/or table of offsets.
  4. Use Excel to calculate sectional areas, waterplane areas, underwater volume, and LCF, LCB and KB given a set of ship’s lines and/or table of offsets.
  5. Describe the effects of the vertical position of the center of gravity on the initial stability of a ship. Calculate the metacentric radius and metacentric height of a ship given the lines drawing and/or table of offsets.
  6. Use AutoCAD to create a basic engineering drawing.

Prerequisites

ENA major or approval of NAOE department chair

Class Topics

  1. Preliminary ship design (3 classes)
  2. Flotation (2 classes)
  3. Stability (2 classes)
  4. Resistance and model testing (2 classes)
  5. Numerical methods (3 classes)
  6. Ship design and construction (2 classes)
  7. Structural design (3 classes)
  8. Probability and statistics (2 classes)
  9. Wind and wave forces (2 classes)
  10. Marine engineering (3 classes)
  11. Engineering ethics (1 class)

Computer Usage

The students are required to make extensive use of spreadsheets, including self-programmed and built-in functions. Additional programs such as symbolic math and data acquisition are used to demonstrate specific topics.

Laboratory Projects

  1. Creating a Table of Offsets from a Model
  2. Archimedes Lab (calculation of buoyancy force using weight of displaced water)
  3. Inclining Experiment
  4. Performance Testing using a Gravity Tow System
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