IDEX 2017

Extended SIGMA family [IDEX17D5]

23 February 2017

Damen Schelde Naval Shipbuilding (Stand B-028) is highlighting different variants of its proven SIGMA family of designs at NAVDEX.

Having already built SIGMA corvette and frigate variants for Indonesia and Morocco at its Vlissingen shipyard, the company in January handed over the first SIGMA 10514 Perusal Kawal Rudal (PKR) frigate to the Indonesian Ministry of Defence, on schedule and on budget. The ceremony took place at the PT PAL shipyard in Surabaya, where the vessel was assembled from modules built in Indonesia and the Netherlands.

The Indonesian Ministry of Defence awarded the contract to Damen, as main contractor for the construction of the first SIGMA 10514 PKR, named KRI Raden Eddy Martadinata, in December 2012. An order for a second ship, to be named KRI I Gusti Ngurah Rai, followed in 2013.

The 105m, 2,365-tonne PKR frigates are designed to undertake a wide range of missions in and around the waters of the Indonesian archipelago. Their primary mission is anti-air, anti-surface and antisubmarine warfare, but they are also equipped to perform maritime security, search and rescue, and humanitarian support tasks.

KRI Raden Eddy Martadinata was built using a collaborative modular process operating concurrently at Damen Schelde Naval Shipyard in the Netherlands and the PT PAL shipyard in Surabaya. The vessel is made up of six modules: four of these were built at PT PAL while the other two modules – the power plant, and the bridge and command centre – were built and fully tested by Damen Schelde in the Netherlands before being shipped for final assembly and integration at PT PAL. Construction of the second PKR, using the same methodology, is well advanced. Sea trials are set to start in May 2017 with delivery in October 2017.

To complement the existing SIGMA frigate family, Damen Schelde has now introduced a series of new fast combatant designs in the 59m to 73m bracket. In line with the Damen philosophy of using standardisation to increase efficiency and reduce construction costs, the new SIGMA 5910, 6610 and 7310 fast combatants share much of the DNA of their larger siblings.

For example, they are based on the same proven hullform, and share common aspects with regard to arrangement and systems layout.

Propulsion is based on a twin-shaft CODAD (combined diesel and diesel) machinery arrangement using controllable pitch propellers. This enables speeds in excess of 30 knots, while at the same time delivering good fuel economy for extended range on patrol, or in transit.

The SIGMA fast combatant designs also enable the support of extensive combat systems, with those on the SIGMA 7310 comparable to those found on much bigger corvettes or light frigates. The smaller SIGMA 5910 and SIGMA 6610 are also capable of carrying impressive sensor and weapon fits.

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