American Bureau of Shipping

The American Bureau of Shipping (ABS) is an American maritime classification society established in 1862. Its stated mission is to promote the security of life, property, and the natural environment, primarily through the development and verification of standards for the design, construction and operational maintenance of marine and offshore assets.

ABS's core business is providing global classification services to the marine, offshore, and gas industries. As of 2020, ABS was the second largest class society with a classed fleet of over 12,000 commercial vessels and offshore facilities. ABS develops its standards and technical specifications, known collectively as the ABS Rules & Guides. These Rules form the basis for assessing the design and construction of new vessels and the integrity of existing vessels and marine structures.