2. ① Feasibility Study
② Concept Design
③ Preliminary Design
④ Contract Design
⑤ Detail Design
3. • Impossible of creative designs in the early-stage naval ship design due to the constraint of flexibility
and affordability occurred by specified requirements
• More possibility of requirement chances by the need of rapidly evolved technologies and complexities
• Need quicker and more statistical data at the early stage of naval ship design
Design Space
4. “Negative Space” is what we call the space surrounding the figure. By placing areas of
negative spaces as accurately as you can in relationship to the whole, your drawing of the
figure will come easier.
http://lifedrawingposes.com/life-drawing-figure-drawing-tips/life-drawing-techniques-negative-space/
Positive Space Negative Space
Positive Space
Negative Space
5. 104 pixels 1,664 pixels
416 pixels
106,496 pixels 26,624 pixels
* With permission of the use of figures from Professor McKesson at U.N.O
6,656 pixels
6. 106,496 pixels 104 pixels
• Quicker early stage design space exploration compared to positive design
• Remove the possibility of over/under-optimization at the early stage design
• Identify uncertainties thus removing technical risks earlier
• Define feasible design range quicker and support decision making with information
* With permission of the use of figures from Professor McKesson at U.N.O
8. Point Design Approach : conventional Family of Design Approach : New
Few design alternatives
manually generated
More design alternatives
Time-consuming nature Time-saving nature
A small amount of information Maximum amount of information
Local Optimization Global Optimization
13. L ∼ f(T, Full Disp., Power)
B ∼ f(Full Disp.)
T ∼ f(L, Full Disp., Power)
Full Disp. ∼ f(B, T, Power)
Max Speed ∼ weak f(B, Full Disp.)
Power ∼ f(L, T, Full Disp.)
• Obtain insightful information for Sensitivity Analysis
14. alternative 1 alternative 2 alternative 3
Outer profile
Hull-form planning semi-planning semi-planning
Propulsor WaterJet WaterJet FPP
max speed. 40 ~ 55 kts 30 ~ 45 kts
Length overall 26.1~44.3m
Breadth max. 5.8 ~ 7.2m
T 1.3 ~ 2.4m
full load 78.8~236.3tom
15.
16.
17. Factor Design Response
L 36.99m Max Speed 40kts
B 5.95m Full Disp. 200ton
T 1.66m
Power 10,810hp
Hull Form Planing
Propulsor WaterJet
18.
19.
20. • Find design patterns by distributions and correlations, and predict
the performance by the regression analysis
• Establish deterministic models at the early-stage design
• Based on the identifying of infeasible design spaces, more
design information can be obtained.
• Provide dynamic information visualization for requirement
confirmation and refinement
• Provide simple way to conduct sensitivity analysis of factors
and responses in a simple manner
