The new specification will take effect ship "weight gain"

July 1 this year, the International Association of Classification Societies (IACS) introduced coordinated version Common Structural Rules (HCSR) will come into effect. The construction rules for bulk carriers and oil tankers would improve construction standards, which greatly changed the original ship and design. In addition to causing a greater impact on the design and production, the specification also ship steel made many new concepts and requirements. Experts said that is the precursor of ship steel shipbuilding, only concerned about the impact after the implementation of the norms ship steel produced by the application in order to be fully prepared to undertake shipbuilding orders in line with HCSR specification.
HCSR to meet the International Maritime Organization (IMO) goal-based ship construction standards (GBS) requirements as the goal, the original bulk carriers and oil tankers, two separate Common Structural Rules (CSR) were coordinated. Compared with the previous release of CSR norms, HCSR greater impact regulations include minimum thickness, bulk carriers grab, double bottom height of the bulk carrier hull structure, hull girder ultimate strength and residual strength, finite element analysis, buckling strength, fatigue strength.
However, after using HCSR uniform standards of ship construction will be a general increase in steel consumption. Hudong-Zhonghua Shipbuilding (Group) Co., Ltd. Deputy General Manager of Golden Swallow analysis, in recent years, IMO and IACS introduction of the relevant specifications of the structural strength of the increasingly stringent requirements in order to achieve these hard targets, shipping enterprises in many cases must increased steel and thickness.
Challenges to improve the strength of the standard ship design brings, can be understood as how to raise the level of ship weight upgrade and optimization. Application of high-strength steel can reduce the amount of steel, while the amount of high-strength steel hull structure will be a corresponding increase in the local area. It is understood that the use of high-strength steel ship industry to the fullest extent in order to reduce the structural weight and other aspects have made a lot of achievements, but its application is subject to technical and cost factors, the shipping enterprises need to conduct in-depth study of its applications and structural details. At the same time, anti-fatigue, anti-corrosion steel applications will increase accordingly.
The ship superstructure, the future is likely to be more use of composite materials. In addition, the application of new materials technology will enable marine sheet and tube type tend to diversify. It is reported that there has not been built to meet HCSR shipping enterprises of the real ship, but the imminent entry into force of specifications and each ship steel shipping enterprises to change the cost of procurement does not have a clear concept. At present, many shipyards and design units are performing compliance HCSR ship upgrading, proceed from the structural design, analysis and optimization, focusing on the rational allocation of steel to adapt quickly HCSR requirements.