GENERAL
The
process of ship design has an iterative nature that is most commonly described
by a design spiral that reflects the design methodology and strategy.
The ship design
process starts with deciding the mission requirements. At the early stages of
the design determines the parameters that will form the basis for optimum ship
dimensions, hull form development as well as propulsion system selection and
auxiliary systems.
These
are usually specified by the ship owner, who based on the current and future
market scenario and expectations according to the customer's requirements.
- Owners requirements
- Problem Definition
- Conceptual Design
- Initial G.A.
- Sketches and 3D Rendering
- Preliminary Specification
Along
with the cycle the process goes through various phases:
- Concept design phase (The key objective is arrive at the feasibility of the project )
- Contract design phase (The key objective is to arrive at the costing of the project )
- Preliminary design phase (The key objective is to plan the project )
- Detailed design phase (The key objective is to construct the vessel )
BASIC DESIGN CONSIDERATIONS
The procedures and ideas described for ship
design can be applied immediately to the ship system. Two basic design
considerations form regarding of ship design process:
•
Operation
Employment
•
Mission:
task or job ship is designed to perform
•
Armament:
measure of offensive & defensive power of ship
•
Protection:
features designed to thwart or minimize destructiveness of enemy attack
•
Maneuverability:
rapid course/speed changes
•
Cruising
range: distance a ship can travel at cruising speed without refuel /
reprovision
•
Structural
design & seaworthiness
•
Stability:
ability of ship to return to an upright position when heeled over
•
Displacement:
measured in tons of water
•
Freeboard:
vertical distance between top of hull and water line
•
Hull
shape
•
Beam
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