The integrated application of the blockchain technology plays an important role in the industrial technology innovation and the manufacturing industry transformation. At present, the blockchain has been regarded as an important breakthrough of the independent innovation of the key technologies in China, accelerating the development and integration of the blockchain technology and the industrial innovation. The development and application of the blockchain technology and each relevant link of the shipbuilding are studied from the viewpoint of the blockchain technology and the transformation and upgrading of the shipbuilding enterprise. The application scenarios of the blockchain technology in the process of the transformation and upgrading of the shipbuilding industry is briefly introduced to provide reference for the high-quality development of the industry.

A ship will be subjected to the comprehensive effect of dynamic load, static load and sudden load (such as collision load) during the operation, resulting in the extremely complicated force distribution of the saddle of the LNG fuel tank. The determination of the force distribution of the saddle is therefore critical for the design and installation of the saddle of the LNG fuel tank. A calculation method for the saddle load superposition has been proposed by studying of the force between the C-type independent fuel tank and the saddle for the dual fuel ships, combing of IGF rules and the "Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk" of CCS. This method solves the design problem of the saddle and the surrounding structure. The key points for installation are given to provide technical references for the design and the installation of this type of spherical tank's saddle.

Several methods for the reduction of SO _X emission are analyzed and compared by adopting the design scheme of the washing tower arrangement for a Panamax type 61 000 DWT bulk carrier regarding to the requirement for the sulfide emission limitation of IMO. It studies the problems and influences that are caused by the installation of the washing tower, such as the influence of the washing tower installation on the ship performance, the arrangement and the support strength of the washing tower, and its influence on the hull vibration.