Trans RINA, Vol 156, Part C1, Intl J Marine Design, Jan - Dec 2014 DESIGN REVIEW
DESIGN DEVELOPMENT AND CONSTRUCTION OF 65’ CATAMARAN YACHT A Jabtanom, T Phormtan and A Nazarov, Albatross Marine Design, Thailand (DOI No: 10.3940/rina.ijmd.2014.c1.35r)
SUMMARY
Paper presents case study of 65’ power catamaran project. Design process is reviewed, from hand sketching through CAD modeling to a full-size prototyping and production. Interaction of naval architects, interior designers, engineering team, boatyard and customer, and also equipment suppliers is studied with lessons learned and proposed future collaboration improvements. The architecture of the craft
is made without extremes, to provide attractiveness and
practicality without impact of daily fashion fluctuations. Valuable insight on Asian interior styling is provided, allowing use of natural materials and traditional decorations where cultural knowledge is the key to create ‘Asian look’. Solar- assisted concept is realized thorough extensive use of solar panels, allowing quiet and ‘green’ environments through integrated power management systems. Influence of regulations and standards on design is discussed in terms of space planning, watertight openings, deck safety, etc. covering some problems facing catamaran craft. Presentations are results of sea trials showing measurable data on performance and comfort factors achieved. New developments in catamaran design are briefed, with few projects 45-105’ currently in development.
1. INTRODUCTION Catamarans and multihulls in general form growing
niche the overall market of pleasure boats and yachts, and are getting a stronger presence in Asia-Pacific region. In some marinas in Australia and Asia, they already count 25% of the fleet. During last 8 years Albatross Marine Design (AMD) has developed over 65 catamaran concepts and designs in 18 to 120’ range, of which about 35 are launched and some of them are in series production – yachts, small commercial and special craft. This experience was used for development of the design of H65 (fig.1) luxury catamaran yacht that started in 2010 and was finally launched by end of 2013; case study of the project is presented in this paper.
Performance – reduced hydrodynamic resistance (in certain speed range) and thus more speed or less required power;
Soft ride - reduced vertical accelerations on seaway; Safety - high initial stability, higher freeboard and flotation, duplicate propulsion units, etc.; plenty of space
Comfort – with
accommodations on deck/saloon/flybridge area; The main disadvantages of catamarans
are excellent higher
construction costs and docking fees influenced by limited availability of docking space. But
still the biggest
inconvenience with cats for manufacturers is mentality stereotype causing ‘lack of trust’ in catamarans in some parts of world and by customers; though presence of catamarans on certain markets leads to ‘chain reaction’ with subsequent growing number of catamarans [3].
2. NOTES ON DESIGN PROCESS
Prior to start the design, it is important to find out what is customer’s motivation in ordering a yacht. To assist, we end up with few ‘standard’ choices or their combination:
Recreation – boating with
Figure 1: H65 ‘Heliotrope’ luxury cruising catamaran designed by AMD and built by Bakri Cono Shipyard (Thailand). Main particulars (as built): length of hull – 18.2m; length overall – 19.2m, beam – 8.1m; draft fully loaded – 1.05m; displacement – 42t; engines – 2x500HP, speed fully loaded – 23kts. Certification – CE/ISO to category A/B.
© 2014: The Royal Institution of Naval Architects family and friends;
weekend cruising, sport, life on board… This type of boat owners usually spend time on board mostly at sea.
Status – exposure, ‘willing to be seen’, elite club membership, attention of partners. On these boats owners usually spend more time in the marina than at sea.
Undoubtedly there are advantages of catamarans if used as yachts [6]:
C-163
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 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92 |
Page 93 |
Page 94 |
Page 95 |
Page 96 |
Page 97 |
Page 98 |
Page 99 |
Page 100 |
Page 101 |
Page 102 |
Page 103 |
Page 104 |
Page 105 |
Page 106 |
Page 107 |
Page 108 |
Page 109 |
Page 110 |
Page 111 |
Page 112 |
Page 113 |
Page 114 |
Page 115 |
Page 116 |
Page 117 |
Page 118 |
Page 119 |
Page 120 |
Page 121 |
Page 122 |
Page 123 |
Page 124 |
Page 125 |
Page 126 |
Page 127 |
Page 128 |
Page 129 |
Page 130 |
Page 131 |
Page 132 |
Page 133 |
Page 134 |
Page 135 |
Page 136 |
Page 137 |
Page 138 |
Page 139 |
Page 140 |
Page 141 |
Page 142 |
Page 143 |
Page 144 |
Page 145 |
Page 146 |
Page 147 |
Page 148 |
Page 149 |
Page 150 |
Page 151 |
Page 152 |
Page 153 |
Page 154 |
Page 155 |
Page 156 |
Page 157 |
Page 158 |
Page 159 |
Page 160 |
Page 161 |
Page 162 |
Page 163 |
Page 164 |
Page 165 |
Page 166 |
Page 167 |
Page 168 |
Page 169 |
Page 170 |
Page 171 |
Page 172 |
Page 173 |
Page 174 |
Page 175 |
Page 176 |
Page 177 |
Page 178 |
Page 179 |
Page 180 |
Page 181 |
Page 182 |
Page 183 |
Page 184 |
Page 185 |
Page 186 |
Page 187 |
Page 188