Back to news

December 7, 2018 | International, Naval

Les frégates de la classe Nansen souffrent d’un défaut sérieux de conception. Le chantier Navantia mis en cause

(B2) Un premier rapport du bureau enquêtes accidents norvégien (AIBN) l'affirme sans ambages. La collision entre une frégate de la marine norvégienne KNM Helge Ingstad et un tanker maltais (Sola TS) dans la baie de Hjeltefjorden en Norvège le 8 novembre, révèle un problème grave de conception sur certains navires fabriqués par les chantiers navals espagnols Navantia. Une alerte sécurité vient d'être envoyée

Un naufrage à proximité des côtes

Rappelons-nous, c'était juste après l'exercice de l'OTAN Trident Juncture, la frégate norvégienne (qui porte le numéro de coque F-313), effectuait des manœuvres à proximité des côtes, près du terminal pétrolier de ce fjord norvégien situé non loin de Bergen, quand il heurte le pétrolier qui naviguait en sens inverse. La collision ne provoque que peu de dég'ts dans le pétrolier, mais pour le navire militaire les conséquences sont autrement plus graves.

Une enquête des bureaux d'accidents civil et militaire norvégiens

La frégate norvégienne, qui fait alors partie de la force navale permanente de l'OTAN (SNMG1), est atteinte « au-dessus et au-dessous de la ligne de flottaison » et « absorbe énormément d'eau » comme le signale le ministère norvégien de la Défense. Il n'est plus stable et doit être échoué. Ses 137 marins doivent être évacués. Une enquête est alors diligentée associant le bureau d'enquête accidents maritime norvégien (AIBN) et son pendant militaire (DAIBN), auquel est associé l'unité d'enquête maritime maltaise (MSIU), autorité du pavillon du pétrolier.

Les compartiments non étanches

Trois compartiments étanches à bord du KNM Helge Ingstad sont inondés : « la salle du groupe électrogène arrière, les quartiers de l'équipage du pont Orlop et le magasin » selon le rapport de l'AIBN. La stabilité est jugée « médiocre », mais le navire est encore considéré comme 'sauvable'. Cette première évaluation ne résiste pas. L'eau gagne du terrain. Elle « coule de la salle des génératrices arrière vers la salle des engrenages via les arbres creux de l'hélice, puis de la salle des engrenages, vers les salles des machines avant et arrière via les boîtes de rangement dans les cloisons ». Quand la salle d'engrenage est inondée, l'évacuation des 137 marins est décidée. Le navire est considéré comme « perdu ». Huit marins sont légèrement blessés dans les différentes manœuvres.

Le navire échoué coule à pic

Les autorités espèrent encore pouvoir récupérer le navire, qui flotte toujours, en le fixant avec des c'bles. Mais dans la nuit du 12 au 13 novembre, ils s'arrachent et le navire coule à pic. Le navire est désormais considéré comme irrécupérable, même si les travaux sont toujours en cours pour être renfloué, comme le précise le ministère norvégien de la Défense. Perte sèche : 4,2 milliards de couronnes (environ 220 millions d'euros).

Une enquête nécessaire chez Navantia

L'autorité norvégienne préconise une vérification des navires norvégiens de même conception. Oslo dispose encore de quatre navires de la même classe — le KNM Fridtjof Nansen, le KNM Roald Amundsen, le KNM Otto Sverdrup et le KNM Thor Heyerdahl — construits sur les chantiers navals espagnols de Ferrol de Navantia. Elle demande ainsi à Navantia de mener « une enquête sur les problèmes identifiés lors de la première enquête et de déterminer s'il s'agit également d'un problème lié à d'autres navires ». L'industriel espagnol doit aussi envoyer une notification aux chantiers, propriétaires et exploitants concernés, pour leur indiquer « les mesures à prendre pour assurer la sécurité ».

(Nicolas Gros-Verheyde)

https://club.bruxelles2.eu/2018/12/un-defaut-de-conception-dans-les-fregates-de-type-nansen-le-chantier-navantia-mis-en-cause/

On the same subject

  • U.S Army awards L3Harris ENVG-B production order

    April 17, 2024 | International, Land

    U.S Army awards L3Harris ENVG-B production order

    This is the first order for the ENVG-B’s Program of Record full-scale production IDIQ, which will total nearly $1 billion over 10 years.

  • DARPA Launches Social Media Platform to Accelerate R&D

    March 20, 2019 | International, Aerospace, Naval, Land, C4ISR, Security, Other Defence

    DARPA Launches Social Media Platform to Accelerate R&D

    DARPA aims to apply the power of social networks to research and development via a novel social media platform purpose-built to quicken the pace of U.S. technology development. Polyplexus, which was recently launched as a public platform, is designed to increase access to scientific evidence and accelerate hypothesis development, research proposal generation, and research sponsor engagement. The platform's real-time interactions and functionality are designed to dramatically shorten the time between the emergence of concepts and the submission of worthy proposals. The platform facilitates connections among experts across academic disciplines so they can propel novel research opportunities together. Beta-launched for academics only in 2018, Polyplexus is now open to the broader research and development community and features an initial offering of research topics for collaboration and potential funding. DARPA seeks participation from anyone who is interested in sharing and learning about emerging science and technology including researchers, practitioners, and even retirees. “Crowdsourcing on the internet works when the solution exists and can be found,” said John Main, program manager in DARPA's Defense Sciences Office. “However, no amount of crowdsourcing will ever work if it's a research and development problem that must be solved, because the solution does not yet exist. That's why we built Polyplexus as a productivity platform rather than a crowdsourcing platform.” Polyplexus is composed of three integrated components: a public information feed where users can promote interesting research and connect it to other research via tweet-like summary statements called micropubs; a private tool for synthesizing new ideas, known as micropub portfolios; and an incubator environment. Incubators allow research sponsors in government and industry to post specific topics of interest and find research and development specialists to address their challenges. Following a 2018 test phase that was restricted to academic researchers, Version 1 of Polyplexus is now open to the public. Researchers and research sponsors across disciplines and industries are invited to sign up and become “Plexors” at https://polyplexus.com/users/login. During the Beta test phase, DARPA awarded funding to multiple proposals generated by founding members on the platform. Recipients included researchers from the University of Arkansas, Arizona State University, University of North Carolina, University of Miami, and Rensselaer Polytechnic Institute. With the public launch of Polyplexus, DARPA's Defense Sciences Office intends to fund up to 30 one-year seedling efforts developed through Polyplexus incubators over the next 18 months. These funding opportunities are capped at a maximum of $100,000 each. They will roll out at a pace of approximately two per month. DARPA just announced the first three Polyplexus incubators focused on Quantum Machine Learning (https://go.usa.gov/xEFpV), Human Learning (https://go.usa.gov/xEFpA), and Strategic Technological Surprise (https://go.usa.gov/xEFpm). To learn more about the incubator topics visit the incubators section on https://Polyplexus.com. Abstracts and proposals resulting from DARPA incubators will be submitted directly to DARPA as specified in the Polyplexus BAA: https://go.usa.gov/xEFpE. Abstracts and proposals are not submitted on the Polyplexus site. Anyone may create an account and contribute to the public areas of the site. Retired scientists, engineers, and researchers are especially encouraged to continue to share their expertise by engaging as Plexors. Plexors can also contribute suggestions for new features that will be included in Polyplexus Versions 2 and 3, which are planned for development over the next 18 months. “Polyplexus maintains a balance between public information exchange and protection of private intellectual property,” Main said. “It also creates an avenue for broader participation in DARPA research and development, including by those who aren't looking for a research project but who have knowledge to contribute, such as retirees.” Researchers should monitor the announcement and evolution of each individual incubator on the platform to fully understand the topic, opportunity, and requirements. Follow @polyplexors on both Instagram and Twitter for updated information. https://www.darpa.mil/news-events/2019-03-19

  • Pentagon announces $600M in 5G experiments

    October 9, 2020 | International, Aerospace, Naval, Land, C4ISR, Security

    Pentagon announces $600M in 5G experiments

    Andrew Eversden WASHINGTON — The U.S. Department of Defense announced $600 million in contracts for 5G experiments Thursday evening for projects at five military bases across the country. The long-anticipated awards are for a series of 5G experiments, including smart warehouses, advanced radars, and augmented and virtual reality capabilities. The awards are part of a Pentagon effort to work with commercial vendors to advance the 5G capabilities of both the department and industry. “The Department of Defense is at the forefront of cutting edge 5G testing and experimentation, which will strengthen our Nation's warfighting capabilities as well as U.S. economic competitiveness in this critical field," said Michael Kratsios, acting under secretary of defense for research and engineering, in a statement. “Through these test sites, the Department is leveraging its unique authorities to pursue bold innovation at a scale and scope unmatched anywhere else in the world. Importantly, today's announcement demonstrates the Department's commitment to exploring the vast potential applications and dual-use opportunities that can be built upon next-generation networks.” The DoD is setting up test beds at several bases where military leaders, industry and academia will work together on a broad range of experiments. The test beds are Hill Air Force Base, Utah; Joint Base Lewis-McChord, Washington; Marine Corps Logistics Base Albany, Georgia; Naval Base San Diego, California; and Nellis Air Force Base, Las Vegas, Nevada. According to Joseph Evans, the DoD's director of 5G, the department plans for the testbeds to be working in a year. “Each of the experiments has some aspect that's really new and exciting to us,” Evans told reporters. “In addition, it also provides an opportunity for industry to experiment and mature their technologies along those parallel tracks.” According to a DoD press release, the bases were chosen because of their access to spectrum, and mature fiber and wireless infrastructure. At Joint Base Lewis-McChord, the Pentagon will work with four vendors to experiment with 5G-enabled augmented and virtual reality goggles for mission planning, training and operations using mid-band spectrum. The vendors are GBL System Corp., AT&T, Oceus Networks and Booz Allen Hamilton. Evans told reporters that in year three of the work at the base the department wants a “brigade-sized deployment of the technology.” The department will also address 5G spectrum sharing challenges with cellular networks through an experiment at Hill Air Force Base. The project, according to a DoD press release, will “develop sharing/coexistence system prototypes and evaluate their effectiveness with real-world, at-scale networks in controlled environments.” The department is seeking to allow sharing or coexistence between airborne radar systems and 5G cellular technology in the 3.1-3.45 GHz band. Vendors for the spectrum sharing test bed include Nokia, General Dynamics Mission Systems, Booz Allen Hamilton, Key Bridge Wireless, Shared Spectrum Company and Ericsson. The Defense Department is also partnering with AT&T at Nellis Air Force Base for a distributed command and control testbed to enhance C2 survivability in combat. The telecom giant will eventually provide a mobile 5G environment with high capacity, low latency communications to meet the needs of a mobile combined air operations center. “We're basically trying to make our forces more survivable by taking command and control functions that have long been housed in single buildings and spread them out and make them make them mobile,” Evans told reporters. “So [we're] really trying to change the way our forces are deployed in the field.” The department will experiment with 5G-enabled smart warehouses at both Naval Base San Diego (NBSD) and Marine Corps Logistics Base Albany, Ga. The project in San Diego will focus on transshipment between shore facilities and naval units, while the Marines Corps project will center on vehicle storage and maintenance. Both projects will work “to increase the efficiency and fidelity of ... operations, including identification, recording, organization, storage, retrieval, and transportation of materiel and supplies,” a DoD press release said. Industry partners for the San Diego-based project are AT&T, GE Research, Vectrus Mission Solutions Corporation and Deloitte. AT&T will use cullar spectrum in the sub-6 GHz and millimeter wave bands, the DoD press release said. Partners at Marine Corps Logistics Base Albany, Ga. are Federated Wireless, GE Research, KPMG and Scientific Research Corporation. The Air Force also recently chose AT&T to provide 5G capabilities at three bases. The DoD is also in the process of choosing vendors for 5G experiments at seven more bases. According to Evans, the first solicitation release and industry day for the Navy and Marines Corps bases in that tranche will come in mid-October using the Navy's Information Warfare Research Project consortium. The Air Force and Army solicitations are expected to be rolled out through December through the National Spectrum Consortium, Evans said. https://www.c4isrnet.com/battlefield-tech/it-networks/5g/2020/10/08/pentagon-announced-600-million-in-5g-experimentation-contracts/

All news