DSEI 2023: Kongsberg Maritime pitches Promas propulsion system for naval market

by Kate Tringham

The Promas integrated propeller and rudder system. (Kongsberg Maritime)

Kongsberg Maritime has started marketing its Promas propulsion system to navies after concluding research that demonstrated it could deliver fuel savings, greater range, and improved manoeuvrability for naval platforms.

Promas, which was originally designed for commercial ships, combines the rudder and propeller into one unit to make the transition of water streamlined. Most naval twin-screw vessels use conventional rudder and propeller systems placed off-centre from the shaft centreline.

Kongsberg's research, which was carried out by the company's Hydrodynamic Research Centre (HRC) in Sweden, demonstrated that naval vessels relying on traditional rudder and propeller systems could operate more efficiently – with fuel savings of more than 5% – and increase manoeuvrability when equipped with a Promas integrated propeller and rudder system. This fuel savings could translate to extended range, boosting the capability of naval platforms in critical situations, the company said.


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France orders first long-lead items for PA-NG carrier

by Kate Tringham

An artist's impression of the French Navy's PA-NG next-generation carrier. (MO Porte Avions)

The French defence procurement agency (Direction Générale de l'Armement: DGA) has placed the first order for long-lead items for the country's future Porte-Avions Nouvelle Génération (PA-NG) next-generation nuclear-powered aircraft carrier (CVN), the French Ministry of the Armed Forces has confirmed.

In a 30 April announcement, the French defence ministry said the DGA had awarded a contract worth EUR600 million (USD642.7 million) to the PA-NG programme's industrial prime contractor MO Porte-Avions (a joint venture of Naval Group and Chantiers de l'Atlantique), and nuclear reactor developer TechnicAtome, covering the provision of long-lead elements related to the ship's nuclear propulsion, namely the K-22 nuclear reactors, their containment structures, and steam generation machinery.

The contract paves the way to start manufacturing these elements, with work expected to continue from 2024 to 2029 in advance of the start of construction of the aircraft carrier, the defence ministry said.


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China's third aircraft carrier begins maiden sea trials

by Ridzwan Rahmat

China's third aircraft carrier, seen here as it embarked on its maiden sea trials on 1 May 2024. (Pu Haiyang/VCG via Getty Images)

China's third aircraft carrier has embarked on its maiden sea trials, state-controlled Xinhua News Agency announced in its report on 1 May.

The carrier, Fujian , left the Jiangnan Shipyard in Shanghai at around 0800 h local time on the day of the announcement. These trials will primarily focus on testing the “reliability and stability of the aircraft carrier's propulsion and electrical systems”, reads the Xinhua report.

“Since its launch in June 2022, the Fujian has completed its mooring trials, outfitting work, and equipment adjustments. It has met the technical requirements for sea trials,” the report added.

Fujian was launched by Jiangnan Shipyard in June 2022. It is slated to be the People's Liberation Army Navy's (PLAN's) third aircraft carrier overall, but it is the service's first vessel to be configured for catapult-assisted take-off but arrested recovery (CATOBAR) aircraft operations.


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New labour deal touted as possible pathway for national workforce model for naval ships

by Michael Fabey

The US Navy has begun to improve its current public shipyards, such as the Portsmouth Naval Shipyard, shown here. (US Navy)

A new labour agreement signed on 29 April that seeks to build a rotational workforce of skilled welders could eventually serve as template for a national workforce arrangement for work on naval ships, according to Edward L Bartlett Jr, founder and CEO of Bartlett Maritime Corporation (BMC) – the company that brokered the deal.

The impetus for the rotational welders was a plan to use such a workforce to work on naval ships in Charleston, South Carolina, Bartlett told Janes in an interview on 29 April.

BMC hopes to prove out the concept through the recentlysigned labour deal and similar follow-on agreements. BMC has also proposed to construct and operate component repair facilities in northeast Ohio with an option to build a new public naval shipyard in Charleston.


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https://www.janes.com/defence-news/naval-weapons/latest/dsei-2023-kongsberg-maritime-pitches-promas-propulsion-system-for-naval-market

Kongsberg Maritime has started marketing its Promas propulsion system to navies after concluding res...

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