Landsort-class mine countermeasures vessel

The Landsort-class mine countermeasures vessel were built by Swedish shipbuilding company, Kockums (formerly Karlskronavarvet) for the Swedish Navy and the Republic of Singapore Navy (RSN) between 1983 and 1996. == Design == As a mine countermeasure vessel, the hull is made out of glass-reinforced plastic in order to lower acoustic and magnetic signatures, as well as provide improved shock resistance to underwater explosions.

Source: Wikipedia — Landsort-class mine countermeasures vessel (CC BY-SA 4.0)