• A cable layer or cable ship - deep-sea vessel designed and used to lay underwater cables for a number of purposes including telecommunications and electric power transmission.
  • Diving support vessels - utilised for the prospect of construction, repairing and maintenance of oil-rigs and other important offshore naval constructions, in areas such as the North Sea and the Gulf of Mexico.
  • A multi-purpose offshore support vessel (MPOCV) supports exploration and production activities carried out by the oil and gas industry. It is capable of providing deepwater services for offshore construction, installation and other operations in any part of the world.
  • Accommodation and repair vessel's provide bed space, food and laundry for people working on construction projects offshore.
  • A shuttle tanker is a ship designed for oil transport from an offshore oil field as an alternative to constructing oil pipelines. It is equipped with off-loading equipment compatible with the oil field in question. This normally consists of a taut hawser arrangement or dynamic positioning to maintain the position relative to the field, an off-loading arrangement of pipes and redundant safety systems to ensure that the potentially flammable crude oil is handled safely in a harsh environment.
  • Platform supply vessel (PSV) is a ship specially designed to supply offshore oil platforms. These ships range from 20 to 100 meters in length and accomplish a variety of tasks. The primary function for most of these vessels is transportation of goods and personnel to and from offshore oil platforms and other offshore structures.