Skip to main content



Tuesday, August 24, 2021 

Classification Society ClassNK has released a new publication, 'Guidelines for Additive Manufacturing (3D Printing)' that summarises the approval requirements for metallic marine equipment by additive manufacturing technology as part of its effort to meet the industry’s demand for a third-party certification for marine equipment manufactured with advanced technology.

Additive manufacturing technology is a method for manufacturing by laminating and combining materials such as resin and metal based on 3D model data. Its feature is the capability to mould complex and high-precision shapes.

In recent years, the use of additive manufacturing technology has rapidly expanded in manufacturing metallic products. Although there are few examples of the use of this technology in the maritime industry, it is expected that metallic products by additive manufacturing technology will become widespread in the future as many marine equipment are metallic.

To ensure safety and proper use of the technology in the maritime industry, the guidelines specify the approval requirements for the feedstock used in metallic marine equipment by additive manufacturing technology, the manufacturing process, and the test and inspection for the products. Further, the guidelines include appendices which summarise the terminology, type, and features of the technology to be used as an introduction to additive manufacturing technology, and include information about the characteristics and the management methods for metallic powder used in additive manufacturing.

The guidelines are available to download free of charge for registered users of ClassNK’s website.

Reader Comments (0)

There are currently no comments on this article. Why not be the first and leave your thoughts below.

Leave Your Comment

Please keep your comment on topic, any inappropriate comments may be removed.

Return to index