Trans RINA, Vol 156, Part C1, Intl J Marine Design, Jan - Dec 2014
configuration with two hard chine lateral bodies and a central hull supporting the column structures and protecting the
cross deck from wave impacts. The
ENVIROALISWATH has a length of 63 m and the breadth of 15.5 m with a transport capacity of 450 passengers and 50 cars.
Figure 10: Exterior Concept of pentamaran superyacht Figure 12: Side view of ENVIROALISWATH
The submerged body has a length of 50 m, a breadth of 4.10 m and a depth of 2.6 m and it provides the 80% of the hydrostatic buoyancy. The remaining provided:
20% is
at zero speed and in the pre-planing phase by the two lateral hull bodies;
Figure 11: Final Exterior Render
McCartan et al [47] reported on a transatlantic superliner design concept (figure 11) based on a 290m Pentamaran, which engages in Design-Driven Innovation to develop a new market sector for high speed multifunctional vessel to compete with both air freight and business class air travel in addition to the role of a superliner cruise ship. This design proposal offered the business traveller a personalised office space with global connectivity to make the journey a seamless extension of the working environment. The logistics role of the vessel gives the cruising passengers and business travellers a lower carbon footprint that a single function vessel, thereby engaging in green luxury.
Boote and Mascia [48] developed a fast passenger ship with a very low wake wash to be used in a short range transport close to the shore. Where wake wash represents the biggest limitation to the commercial development of fast vessels, which is exacerbated by vessel size. The feasible platform typologies examined were: hydrofoil; catamaran; SWATH. They synthesized a new topology the ENVIROALISWATH, combining hydrofoil and SWATH
principles, in order to environmental impact and reduced wave
achieve low washing
phenomena, while maintaining a high speed. Providing high performances, manoeuvrability and controllability typical of hydrofoils combined with the good sea keeping qualities and low installed power, typical of a SWATH. The vessel consists of the hull and a submerged body connected together by two column structures, shown in Figure12. The submerged
body houses propulsion system, and has four foils the main providing the dynamic lift. The hull (Figure 13) has a trimaran
at cruise speed by four foils lifting force. Achieving 27
knots with moderate wave making.
Platform technical innovations such as this will enable marine vessels to create new markets to compete with other forms of logistics and public transport.
Figure 13: Sectional view of ENVIROALISWATH
The on-board comfort of large motor yachts has become the object of specific attention by most Classification Societies which issued new rules and regulations for the evaluation of noise and vibration maximum levels; this is an equivalent
to NVH analysis in the automotive
industry. In a comprehensive investigation into the dynamic behaviour of superyacht structures, Boote et al [49] carried out a detailed FEA analysis of a 60.0m superyacht. In order to investigate the natural frequencies of the main steel deck and of the superstructure aluminium alloy decks (Figure 14). The numerical results
©2014: The Royal Institution of Naval Architects C-13
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