Swedish company Saab is to overhaul HMS Halland, a Gotland-class submarine commissioned in 1997.

The work was contracted by the Swedish Defense Materiel Administration. It is worth about $17.9 million.

Saab said the overhaul will include all the necessary measures to ensure the submarine's operational availability. The company will also define future needs for the ship's maintenance, which could result in additional work being contracted separately during the period.

"Maintenance of Swedish surface vessels and submarines is an important part of our ongoing business," said Gunilla Fransson, head of Saab's Security and Defense Solutions business area. "It is also important to ensure the customer's long-term operational capability."

Work based on the submarine will be carried during 2014 and 2015 at the Saab Kockums shipyard in Karlskrona.

In other Saab maritime news, the company announced that the government organization also ordered 10 remotely-operated vehicles for seabed surveys, inspections, light underwater operations and object recovery.

The ROVs to be supplied as stand-alone systems are the Seaeye Falcons, which Saab is adapting to meet FMV's specifications.

"This is another example of how Saab combines civil and military technology and adapts it for the requirements and purposes stipulated by the military," said Agneta Kammeby, head of Saab's Underwater Systems business unit. "Over the years, we have developed and established unique expertise within the field and we are delighted and proud of being able to deliver the system to the customer."

The systems will be delivered within 12 months.