J. McArthur

J. McArthur refers to Sir John McArthur, a notable figure in history, or it could relate to other individuals with the same name depending on context. Assuming you're referring to Sir John McArthur, he was a prominent Scottish engineer and shipbuilder in the 19th century. He contributed to the advancement of maritime technology and worked with major shipping companies. His expertise helped improve ship design and safety, playing an important role in the development of modern naval engineering. If you have a specific J. McArthur you're referring to, please provide additional details for a more targeted explanation.