Marine Design, 14-15 September 2011, Coventry University, UK Technical design is classification bodies. used for design approval by some are developed during construction and associated with construction supervision
Design development does not end on delivery of the design set to the customer; it continues
during
development of prototype or during construction of a custom boat or after tests.
Prototyping and modeling is an important stage especially for unconventional craft or accommodation details. For certain types of unusual craft we would start with radio controlled models to study its behavior and then moving to a full-size prototype with necessary modifications.
This work is usually performed on
completion of the concept design. For small craft interior design, cockpit, console and other details only 70-80% can be done ‘on drawing board’; the rest are adjustments done on interior mock-up or prototype where 50mm can make a big difference for comfortable
foot often
space,
rounded corner or step height. This work is carried in parallel with construction of plugs for production boats, or on completion of the hull for custom projects where full-size mockup is made and verified giving a real feeling of space to both designer and customer.
Construction supervision is essential for the builder and customer, it reduces amount of re-work and allows to control undesired ‘simplifications’ during construction that can damage appearance or other qualities. Contemporary communication aids make it possible with remote supervision as well as communication of design team members sometimes staying in different parts of the world.
3. DESIGN AS COMPROMISE OF QUALITIES
Design is not just a pretty makeover but the solution of a particular task. For boats, design is a combination of five basic controversial properties:
Figure 2 – Design development stages for PM1800 passenger catamaran
Designed for costal passenger transportation in
compliance to HSC Code. Main particulars: length of hull – 18.0m; beam – 6.1m; draft fully loaded – 1.20m; displacement – 16/25t; engines – 2x510HP; passenger capacity – 70; see also [1]
Construction drawings stage is targeted at assisting the construction and includes development of cutting files, lofting, assembling diagrams, templates, details requested
by yard and clarifications in equipment
specification. In our practice some construction drawings are developed together with the technical design, and
Aesthetics – visual appeal of craft;
Comfort - sense of physical or psychological ease;
Performance - combination of speed, controllability, sea keeping, functionality;
Safety – protection of craft and people against harm events;
Cost – economics of construction, operation, maintenance and resale.
Successful design is a successful combination of those, with given priorities for each. Say, for a houseboat performance is likely to be of much less importance than comfort; for an ocean cruiser safety is more vital than aesthetics. Thus an evaluation of design cannot be done in the abstract from particular statement of requirements.
We will look at factors of safety, comfort and aesthetics directly affecting general design and styling, starting
©2012: The Royal Institution of Naval Architects C-45
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64