Saab Kockums has decades of experience in Mine Countermeasures Vessels (MCMVs) and associated systems. The MCMV 47 of the Swedish Landsort and Koster class, as well as the Singaporean Bedok class, are well proven around the world.
MCMV 47 - Landsort, Bedok and Koster class - Reliable and Dedicated
The role of the Swedish Koster class is primarily mine hunting. Its secondary role is minesweeping, where it can act as a command and control platform for unmanned influence sweep drones, or by towing a mechanical sweep after the vessel.
Unlike single-role mine hunters, the MCMV 47 Koster class (originally the Landsort class) was conceived as a multi-purpose vessel, able to perform various mine warfare tasks and to engage in anti-submarine warfare (ASW). The Koster class design is well-proven and extensively verified, with operational experience gained from a multitude of MCM operations, including live mines and underwater explosives. Seven ships of this class have been delivered to the Royal Swedish Navy, and a further four to the Republic of Singapore Navy.
The MCMV 47 Koster class is permanently equipped for mine hunting and minesweeping. The vessel is a powerful MCM combat system that supports both these operating modes. Four different types of underwater vehicles are used to detect, identify, classify and neutralise any type of mine.
Due to the wide variety of mine warfare missions, many specific requirements have been taken into account in the design of the MCMV 47 Koster class. Some of these requirements are:
- High resistance to underwater explosion shocks
- Low signatures
- Excellent manoeuvrability
- Full nuclear, biological and chemical (NBC) protection
- Electromagnetic compatibility (EMC)
- Spacious accommodation and ample supplies for extended missions
For minesweeping, the Koster class is equipped with a mechanical sweep and serves as a command and control platform for unmanned minesweeping drones. Depending on the customer's requirements, the system comprises:
- MCM command and control system
- Mine hunting sonar systems, such as Hull Mounted Sonar (HMS) and Propelled Variable Depth Sonar (PVDS), also known as Remotely Operated Vehicle Sonar (ROV-S)
- Underwater positioning system
- Mine disposal systems including Mine Disposal Vehicles (MDV)
- Mechanical minesweep
- Hyperbaric chamber and provisions for mine clearance divers
- Navigation systems
- Communication system
The Glass Fibre Reinforced Plastic (GRP) Sandwich Concept
The entire hull and deck house structure on the MCMV 47 is made of glass fibre reinforced plastic (GRP) generically referred to as composite material. It uses a special sandwich lay-up method developed through close cooperation between the Swedish Defence Materiel Administration (FMV) and Saab. The composite material
is both non-corroding and non-degrading. It is also easy to repair and requires minimal maintenance, needing only the basics such as cleaning and painting. This improves the lifecycle maintenance cost, increases the hull's life expectancy, and reduces the total lifecycle cost (LCC). This has been confirmed by extensive material tests and over 40 years of ship service. The GRP materiel significantly enhances the operational capability of the vessel. Some of these properties are:
- Low weight
- Low magnetic signature
- Low acoustic signature (insulation)
- Low infrared signature (insulation)
- Low electric (UEP/ELFE) signatures
- Low pressure signature
- High shock resistance
- Good fire resistance