The LNG carrier of 147,000 m3 in capacity built by Hudong Zhonghua Group is of double hull construction, having double bottom in the entire length of the ship, double hull side (up to the main deck) and double topside deck. The main deck is a through deck for the entire ship. The topside deck is from the forward end bulkhead of the superstructure to the bulkhead of the forepeak. No forecastle is fitted. A helicopter deck is fitted at the stern. Emergency towing arrangements are provided at fore and aft ends. A pilot ladder is provided at port and starboard respectively. Two 15 tonne cranes are fitted on topside deck and two 10 tonne cranes at the engine room casing. Two totally enclosed lifeboats, each of which accommodates 45 persons, are stowed within the superstructure area, and anchor winches are fitted at fore and aft ends. Deck foam, water sprinkling and dry powder fire-extinguishing systems are provided in dangerous zones. The cargo pump room is situated at starboard amidships above the topside deck. Fore side thrusters, high holding power anchors, steam engines, single propeller and semi-spade rudder are provided.

APPENDIX: A LNG CARRIER OF 147,000 m3 IN CAPACITY BUILT BY CHINA ON ITS OWN DESIGN

The extensive use of wind energy, solar energy and typical clean energies such as LNG (liquefied natural

gas) is an important measure for achieving the strategic objective of conserving energy and reducing

emissions in China. The successful building by China on its own of LNG carriers indicates that the

Chinese shipbuilding industry has entered the market of such ships, thereby laying a solid foundation for

a smooth implementation of the LNG project in the country. Ever since the LNG project is initiated by the

State in 1999, CCS as the ship survey organization of the country and with the strong support of related

Ministries and Commissions has been playing an active role therein, fostering its technical abilities and

survey capabilities for escorting the Chinese shipping and shipbuilding industries. Base on development

and accumulation in last 10 years, we have initially mastered core technologies of LNG carriers and are

capable of providing appropriate survey services to large LNG carriers.

Ⅰ. MAIN HISTORY OF CCS PARTICIPATING IN THE LNG PROJECT

Ⅱ. MAIN ACHIEVEMENTS OF CCS IN RESPECT TO LNG CARRIERS

1999 ~ 2001: Understanding and accumulation of technologies;2001: Drafting of the Report on the CCS Guangdong LNG Project;2002 ~ 2003: Determination of participating in the Guangdong LNG Project with dual class, reaching the “Joint Statement on Dual Class Survey” with ABS of USA;2003 ~ 2005: Successively sending leading technical and managerial persons to London for participating in plan approval of LNG carriers, to USA for participating in special researches such as temperature field analysis together with sloshing load and fatigue analysis of LNG cargo tanks, calculation and analysis of pump towers as well as vibration analysis, and to GTT in France for participating in special technical training in membrane tanks;2006 ~ 2007: Publication of the Rules for Construction and Equipment of Ships Carrying Liquefied Gases in Bulk and the Guidelines for Survey of Membrane Tank LNG Carriers (For Trial Implementation), providing initial Chinese technical standards for design and construction of LNG carriers by the country itself and laying foundation for independent survey and certification of Chinese LNG carriers;2004 ~ 2010: Participating jointly with ABS in on-site surveys of six LNG carriers of 147,000 m3 in capacity throughout their construction at Hudong Zhonghua Shipyard, with classification certificates for five of the carriers being issued and the sixth one still under construction.

2.1 Development and publication of appropriate rules and guidelines as foundation for independent survey and certificationBy improving its research and development abilities and adequately absorbing advanced technologies from abroad, CCS’ Construction and Equipment of Ships Carrying Liquefied Gases in Bulk and Guidelines for Survey of Membrane Tank LNG Carriers (For Trial Implementation) are successively developed and published. Particularly in the Guidelines for Survey of Membrane Tank LNG Carriers (For Trial Implementation), the text of which contains about 400,000 Chinese characters, specific technical requirements are provided and standards specified for classification surveys, hull structures, direct structural calculation and strength assessment (including additional requirements for longitudinal bending strength), sloshing load calculation of tanks and structural strength assessment of pump towers of such ships, thereby providing initial Chinese technical standards for design and construction of LNG carriers by the country itself and laying foundation for independent survey and certification of such ships. In addition, CCS has set the technical line of establishing the dynamic load approach and the spectrum fatigue approach (DLA/SFA) and further improved guidelines, and has in place a systematic plan for the development of rules.

2.2 The ability of providing plan approval service is significantly improved and key criteria of core technologies are mastered as standard basis for their assessment, including:◎ General requirements for hull plan approval: IGC Code and flag State’s requirements for all hull structural plans, outfitting, stability and

damage stability, load lines;◎ Minimum requirements for scantlings of hull structures: Simplified calculation of fatigue strength of structural joints, rules check

techniques, etc.;◎ Finite element structural analysis and calculation: Yield strength, buckling strength and fatigue strength of essential areas of hull

structures;◎ Analysis of sloshing loads and structures of cargo tanks, including calculation of sloshing loads at 10% and 80% liquid levels in various

wave headings, and strength analysis of cargo tank structures;◎ Calculation and assessment of hull vibration;◎ Pump tower calculation and analysis, including analysis principles and strength criteria in respect to combined effects of sloshing and

thermal loads;◎ Thermal stress analysis, including calculation regarding temperatures and resultant stresses;

2.4 Through surveys during construction, on-site surveyors of project teams have improved their understanding of ship types and accumulated appropriated techniques in application and operation of patented LNG technologies.◎ Certified for qualification of “survey of LNG carriers under construction”;◎ NO.96, MARK III, CS1 membrane tank design ideas together with knowledge in maintenance, repairs and building of cargo transfer

systems and in-service LNG carriers are mastered by cooperation with GTT of France;◎ Characteristics of structures and arrangement of LNG carriers are deeply studied and analyzed and core techniques for survey of

such ships (key points of construction accuracy survey and monitoring in respect to fatigue life; survey of membrane tanks: including Invar material, processed Invar components, insulation boxes, processed stainless steel components, pump towers, domes, primary barriers, secondary barriers, insulation material, low temperature pipes, high temperature pipes, nitrogen generators, cyclic heating systems, global tests; survey and monitoring of automated integrated equipment such as cargo handling systems) mastered, and a CCS methodology of on-site survey and monitoring is generalized thereby;

◎ Experience is gained in approval of distinct welding procedures of LNG carriers and in certification and management of welder qualifications;

◎ The preparation of technical guidance documents, e.g. the Instructions to Surveyors – A Special Book of Liquefied Gas Carriers, the Summary of Surveys during Construction of LNG Carriers and the Guidance for Survey of LNG Carriers in Service, has been completed by on-site surveyors, summarizing in details CCS technical requirements and implementation requirements for projects in progress and laying a solid foundation for subsequent surveys of such ships in service and construction of new ones.

2.5 Specialized teams of managerial and technical talents is in place:By participation in LNG projects in Guangdong and Fujian, CCS has in place management teams and technical personnel for LNG carriers, laying a good foundation for subsequent work.◎ A research group, 3 members of which hold doctor’s degrees, is set up for research and development of rules, concentrating on new

technologies, standards and requirements for LNG carriers and continually developing and improving CCS rules;◎ A plan approval team with 4 technical experts as leading members is set up to ensure prompt implementation of plan approval and

technical requirements;◎ A survey team with 6 on-site surveyors as leading members is set up and through transmission of on-site survey techniques, a total of

about 15 persons are being trained in survey of LNG carriers in service;◎ Great efforts are being made to enhance a technical supporting group, for which 6 senior surveyors are designated, so as to establish

as soon as possible CCS technical supporting and management personnel by means of on-site survey, training in management and cooperation with other classification societies

2.3 Special requirements for basic and specific equipment and systems of LNG carriers are mastered by on-site surveys throughout construction of such ships, including:◎Technical standards for construction;◎Required documentation of ships;◎Survey of cargo containment systems;◎Cargo handling systems;◎Survey of inert gas generators and nitrogen gas systems;◎Survey of main boilers;◎Survey of main turbines;◎Survey of steam piping systems;◎Survey of heating systems of empty tanks;◎Survey of automated integrated systems (AIS).

◎ Dynamic load approach, including direct calculation of occasional three-dimensional hydrodynamic forces (seaworthiness), fine-mesh finite element fatigue life assessment and analysis;

◎ Cargo piping systems, including cargo handling, heating, measurement systems and their arrangement;◎ Requirements for equipment and arrangement of dual fuel system;◎ Strength calculation and analysis of low-temperature-resistant pipelines, including combined calculation and analysis of temperatures,

pressures and acceleration stresses;◎ GTT-patented cargo containment system.