(EEOI) statistics for the three main types of vessels, researchers should systematically study the EEDI baseline assessment method, pre-verification technology, experimental technology, and focus on comprehensive optimisation technology to meet the performance design requirement of EEDI. The reduction of water resistance


and effective propulsion technology must also be studied in order to develop a series of green vessel types. This would help to develop smart energy-conservation, voyage planning technology and navigation aids. Furthermore, building new


technological systems based on tests from operating green vessels might not include current classification standards and the new goal should be to focus on hull energy-saving, consumption- reduction and safety. Similarly, the following aspects should be highlighted: precise onboard tests, compound material application technology, technology for optimised material to reduce weight, technology for structural loading analysis and technology for structural safety and reliability. Priority needs to be given to voyage


energy-conservation, pollution-prevention and safety. Te following problems also demand our attention and solution: shipping risk assessment technology, risk control technology, onboard safety alarms, accident and disaster prevention and control, smart salvation preparation and operational technology. Studying the technology on the energy- saving and environmentally friendly


equipment the prospective field includes: low and middle speed diesel power technology for a new vessel; smart diesel electric fuel injection and electronic technology; fuel cell and LNG vessel power technology; civil vessel nuclear power for propulsion design technology; offshore deep water floating wind power array technology; tidal power, current power generation and temperature difference power generation technology. Studying technology in supporting


equipment that features energy conservation and environmental protection includes new high performance and energy-conservation generating sets; low consumption and low noise vane pump and volumetric pumps; low noise and high performance fans; residual heat utilisation technology for main engines and marine equipment; new energy saving and clean cabinet equipment technology; effective blast water disposal system technology; tributyltin (TBT)-free anti-pollution and resistance-reducing paint and coating technology; and vessel garbage and waste water disposal technology. The development of green vessel


operations on domestic rivers and lakes for direct transportation that will meet these standards will also be a requirement argues Weng Zhenping. “Based on our country’s waterway transportation development features, we should develop the following areas: a standard shipping series for 21st century green waterways; a standard shipping series for inland waterway direct transportation; high speed ferries for the Taiwan Strait; a Taiwan Strait special wind and current


environmental database; a vessel design capable of producing an excellent performance in a harsh environment; and technology that supports a high-speed water transportation network.” Finally it is necessary, says Weng


Zhenping, to develop a green offshore and coastal fishing vessel series. It includes: a standard shipping series for a 21st century green coastal fishing vessel; LNG–powered offshore fishing and fish-resource-discovery series; a marine fishing fleet guarantee; a supply freezer processing vessel; and fishing equipment such as fishing tools and fishing nets. Weng Zhenping points out that to


develop and to implement the noise goal of green vessels has challenged shipping, shiſting the focus from macro phenomenon and response to micro aspects. Correspondingly, its research content has shifted from potential flow, unidimensional


flow, constant


and linearity problems, to viscous flow, multiple-phase flow, inconstant and non-linearity problems. Te focus has changed from a single


function in an ideal environment to the comprehensive optimisation of different subjects within a genuine environment. In terms of green shipping and structural safety, Chinese shipyards should pay particular attention to such problems as structural optimisation by reducing weight and increasing loading; structural bearing ceiling capacity; wave-induced vibration and slamming vibration; accident damage prevention and control; and ice area vessel and ocean structure loading and safety. NA


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The Naval Architect March 2016


21


In-depth


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