Profile of China Ship Development and Design Center （CSDDC）

China Ship Development and Design Center (CSDDC) is one of the leading institutes engaged in the development and overall design of ships,submersibles and marine structures.With a history of over forty years,CSDDC has made great efforts to import and incorporate international advanced technologies and adapt them to its own actual projects.     

Profile of China Ship Development and Design Center （CSDDC）

China Ship Development and Design Center (CSDDC) is one of the leading institutes engaged in the development and overall design of     

中国船用产品上船难于上青天

In recent years,China‘s shipbuilding industry has witnessed rapid growth.It‘s reported that china has set the goal to grab 16% of the world market share with the annual output of shipbuilding reaching 10 million deadweight tonnage by 2005, and 24 million deadweight tonnage representing 35% of the world market share by 2015. In addition, over 80% of the marine equipment to be installed on board will be made in China by 2010, compared with the current ratio of 30%. Is it possible for China to realize this goal in less than six years? No wonder there lies a doubt.     

Multi-objective optimization study on dimensions of medium-sized cruise ship in concept phase北大核心CSCD

［Objective］Aiming at the problem of too many influencing factors and too little reference data for determining the dimensions of medium-sized cruise ships in the concept phase, a simplified multi-objective optimization method based on the fitting of dimensions and performance is proposed. ［Method］First, the dimension relations of medium-sized cruise ships are analyzed and the influence of the latest SOLAS requirements used to determine the optimization range. Second, the influence of cruise ship dimensions on space, resistance, stability and seakeeping are analyzed. Next, based on the principles of genetic algorithms, a multiobjective optimization algorithm with high robustness and high engineering adaptability is determined to establish a multi-objective optimization model for the concept design of medium-sized cruise ships. Finally, the Pareto solution obtained by multi-objective optimization is analyzed to provide initial references for determining the dimensions of the target cruise ship. ［Results］Implemented via a genetic algorithm, the optimization program proposed herein is applied in the concept design of a medium-sized cruise ship in order to optimize the initial dimensions, thereby achieving the expected outcome of providing reasonable initial dimensions for cruise ship design. ［Conclusion ］ The proposed simplified multi-objective optimization model can provide feasible initial dimensions for medium-sized cruise ships in the concept phase. As the Pareto solution obtained by multi-objective optimization has different focuses such as resistance and stability, the most suitable solution needs to be selected according to the design object. © 2023 Chinese Journal of Ship Research. All rights reserved.     

中国南海ASDD深水试验井中的锚泊设计与作业(英文)

Mooring systems play an important role for semi-submersible rigs that drill in deepwater.A detailed analysis was carried out on the mooring of a semi-submersible rig that conducted a trial well drilling at a deepwater location in the South China Sea in 2009.The rig was 30 years old and had a shallow platform with a designed maximum operating water depth of 457 m.Following the mooring analysis,a mooring design was given that requires upgrading of the rig’s original mooring system.The upgrade included several innovations,such as installing eight larger anchors,i.e.replacing the original anchors and inserting an additional 600 m of steel wires with the existing chains.All this was done to enhance the mooring capability of the rig in order for the rig to be held in position to conduct drilling at a water depth of 476 m.The overall duration of the drilling was 50 days and the upgraded mooring system proved to be efficient in achieving the goal of keeping the rig stationary while it was drilling the trial well in the South China Sea.This successful campaign demonstrates that an older semi-submersible rig can take on drilling in deep water after careful design and proper upgrading and modification to the original mooring system.     

Celebrating the 40th Anniversary of COSCO

It has been more than two decades since the Port of Seattle welcomed to our harbor the first ship flying the flag of the Peoples Republic of China. Since that first visit from the Liulinhai, which came here for a shipment of American wheat, the Port of Seattle and COSCO have been strong business partners and good friends. COSCO's ships have carried much more than cargo over the past 22 years. COSCO ships, and COSCO employees, have helped build relationships as well as     

Build up quality ships on “double trust”

Reporter: The "double trust" action launched by China MSA is regarded by the shipping industry as a continuation and extension of the "safety and trust ships" initiative. Then what is the original intention of the action?Yang:For many years, the overall c…     

AN ANALYSIS OF THE IMPACT ON CHINA''''S ECONOMIC DEVELOPMENT BY ITS ENTRY INTO THE WTO!ITS MTRY INTO

Fifteen years has elapsed since China first put forward its application for the membership of GATT in 1986.For, these fifteen years, great changes have taken place either with regard to World economy and political environment or to the economic development level, the economic system and the degree of openness of China. These have fundamentally changed the opinios of major WTO members concerning China and their basic negotiation standpoint. For fifteen years, China has spared no efforts in trying to enter the WTO and relative organizations have     

Optimization of bow shape for a non ballast water ship

In this research,a commercial CFD code ＂Fluent＂ was applied to optimization of bulbous bow shape for a non ballast water ships（NBS）.The ship was developed at the Laboratory of the authors in Osaka Prefecture University,Japan.At first,accuracy of the CFD code was validated by comparing the CFD results with experimental results at towing tank of Osaka Prefecture University.In the optimizing process,the resistances acting on ships in calm water and in regular head waves were defined as the object function.Following features of bulbous bow shapes were considered as design parameters： volume of bulbous bow,height of its volume center,angle of bow bottom,and length of bulbous bow.When referring to the computed results given by the CFD like resistance,pressure and wave pattern made by ships in calm water and in waves,an optimal bow shape for ships was discovered by comparing the results in the series of bow shapes.In the computation on waves,the ship is in fully captured condition because shorter waves,λ/Lpp 0.6,are assumed.     

STATE OF WASHINGTON OFFICE OF THE GOVERNOR Message from the Governor

I am pleased to send my best wishes to the China Ocean Shipping Company (COSCO) as it celebrates 20 years of friendship and successful trade relations between the United States and the People's Republic of China on this 20th anniversary of the maiden voyage of the vessel M.V. LIULINHAI. Much has happened in the 20 years since U.S. trade with China was reinstated in 1979, and China has grown to become an important partner in Washington's Asia-Pacific trade relationship. Washington's status as the most trade-dependent state in the nation and our geographic location on the edge of the Pacific Rim dictate that     

China's logistics reform imperatiue

Despite current achievements and a possible 30 per cent growth rate in the coming years, China's logistics market is still fledgling and muddy, said Ding Junfa, vice-president of the China Federation of Logistics and Purchasing. Logistics is an important ingredient for a country to succeed in a globalized economy, said Alan Waller, president of the United Kingdom-based Institute of Logistics and Transport, world's leading logistics certifying organization. China is reviving up efforts to solve bottlenecks haunting the country's logistics industry, officials say. "We are expected to come up with a set of new rules and policies to clean up industrial monopolies, excessive administrative intervention and regional protectionism," said Ma     

Temptation of“Feast”with Hundreds of Billion Yuan

At present,under the dual drivers of policy and market,the process of inland river ship"switching from oil fuel to gas"in China speeds up again.The industry insiders expected that based on the calculation of ships aged under 7 years as per the current pilot ship requirements,the market size of ships"switching from oil fuel to gas"might reach 30b to 60b Yuan,and plus the newbuilding market,the total     

Large marine crankshaft offers China a step forward to shipbuilding power

Shipbuilding industry is known as the top of all industries. The world No.1 shipbuilding country has been the long-cherished wish for China. With the continuous increase of economic and technical strengths, China's dream of becoming the world No.1 shipbuilding country seems to come close. However, crank-shaft as the heart of engine which is the heart of large-size ships often makes us in the state of embarrassment. Now, after some twists and turns, in terms of large marine crankshaft, China has broken through the technology barriers set by foreign crankshaft manufacturers and can make our own heart for large-size ships. Though domes-tically produced crankshafts can't meet our demands at the moment, it will give our people more imaginations be-cause Chinese shipbuilding industry has now had the strengths to gallop the world.     

CCS:Pioneer for LNG Ship Standard

Although China is relatively late in the trial use of LNG ships,she has become the front runner in the promotion of LNG ships.The launch of China’s first LNG/diesel hybrid pilot inland waterway ship in 2010 became the prelude for the application of LNG as bunker fuel for water transportation.At present,with the speeding up of the layout of LNG stations of energy companies,and the increase of the government’s policy support,there is the trend of fast development of"oil converted to     

用于船舶机械的自动管道布线优化（英文）

In the shipbuilding industry, market competition is currently operating in an intense state. To be able to strive in the global market, the shipbuilders must able to produce ships that are more efficient and can be constructed in a relatively short amount of time. The piping layouts in the engine room requires a lot of time for the designer to design the best possible route and in a way are not the most efficient route. This paper presents an automatic piping support system in the ship’s engine ...     

基于内聚力单元法的船舶与重叠冰碰撞数值模拟研究（英文）

The gradual increase in shipping and drilling activities in the Arctic regions has resulted in the increased importance of studying the structural safety of polar ships in various ice conditions. Rafted ice refers to a type of accumulated and overlapped sea ice; it is driven by external forces, such as wind and waves, and may exert high loads on ships and threaten their structural safety. Therefore, the properties of rafted ice and the construction of numerical models should be studied before ex...     

焊接参数对十字型接头焊缝根部和焊趾有效缺口应力的影响（英文）

Cruciform joints in ships are prone to fatigue damage and the determination of type of weld plays a significant role in the fatigue design of the joint.In this paper,the effect of weld geometry on fatigue failure of load carrying cruciform joints in ships is investigated using Effective Notch Stress(ENS) approach.A fictitious notch of 1 mm radius is introduced at the weld root and toe and fatigue stress is evaluated.The effect of weld leg length(l) and weld penetration depth(p) on ENS at weld ro...     

军船雷达目标有效截面预报和缩减研究(英文)

Radar cross section(RCS) is the measurement of the reflective strength of a target.Reducing the RCS of a naval ship enables its late detection,which is useful for capitalizing on elements of surprise and initiative.Thus,the RCS of a naval ship has become a very important design factor for achieving surprise,initiative,and survivability.Consequently,accurate RCS determination and RCS reduction are of extreme importance for a naval ship.The purpose of this paper is to provide an understanding of the theoretical background and engineering approach to deal with RCS prediction and reduction for naval ships.The importance of RCS,radar fundamentals,RCS basics,RCS prediction methods,and RCS reduction methods for naval ships is also discussed.     

通力合作 携手共进

On behalf of the Senate of the Free and Hanseatic City of Hamburg it is a great pleasure for me to congratulate China Ocean Shipping (Group) Company on its fortieth anniversary. These four decades have been an impressive story of success for the company. It has become one of the leading players in container shipping, bulk and general cargo transportation and now owns and operates more than 500 merchant     

航行于波浪中的肥大型船波浪增阻计算研究(英文)

Under the background of the energy saving and emission reduction, more and more attention has been placed on investigating the energy efficiency of ships. The added resistance has been noted for being crucial in predicting the decrease of speed on a ship operating at sea. Furthermore, it is also significant to investigate the added resistance for a ship functioning in short waves of large modern ships. The researcher presents an estimation formula for the calculation of an added resistance study in short waves derived from the reflection law. An improved method has been proposed to calculate the added resistance due to ship motions, which applies the radiated energy theory along with the strip method. This procedure is based on an extended integral equation (EIE) method, which was used for solving the hydrodynamic coefficients without effects of the irregular frequency. Next, a combined method was recommended for the estimation of added resistance for a ship in the whole wave length range. The comparison data with other experiments indicate the method presented in the paper provides satisfactory results for large blunt ship.