• Disparition d’un vraquier transportant du minerai de nickel en Indonésie.

    note la #liquéfaction de cargaison de minerai et le chavirage des navires du fait des phénomènes de #carène_liquide qui en résultent est en passe de devenir un marronnier cf. https://seenthis.net/messages/694685 (et liens qui y figurent)…

    INTERCARGO Expresses ’Deep Concern’ Over Missing Nur Allya Loaded with Nickel Ore – gCaptain
    https://gcaptain.com/intercargo-expresses-deep-concern-over-missing-nur-allya-loaded-with-nicke


    File photo of the MV Nur Allya.
    courtesy MarineTraffic.com

    The International Association of Dry Cargo Shipowners (INTERCARGO) is once again urging shipowners, operators and crews to exercise extreme caution when loading nickel ore and other cargoes known to liquefy following the loss of the Nur Allya in Indonesia.

    INTERCARGO this week said it was deep concerned over the fate of the 25 crew members reported missing aboard the Nur Allya and express thoughts and prayers to the families and loved ones of the missing.

    The 52,000 dwt, Panama-flagged Nur Allya has been missing since August 20 while underway northern coast of Buru Island. A major search operation involving air and sea assets has found no sign of the missing or crew.

    INTERCARGO is in communication with various stakeholders to gather further information on the possible casualty,” INTERCARGO said in a statement. “According to our sources, the ship was carrying nickel ore and was on voyage in Indonesian waters en route from Sagea (Gebe island) to Morosi (southeast Sulawesi). Our appreciation and encouragement goes to the Search And Rescue efforts currently being undertaken by the Indonesian SAR Agency BASARNAS.

    Although the cause of the potential casualty is not known and must be established by prompt investigation by the Indonesian Authorities, INTERCARGO urges all Ship Owners, Operators and Seafarers to exercise extreme caution when accepting, for carriage, Nickel Ore and other cargoes that have the potential to liquefy. We would like to stress the importance of adhering to the provisions in the International Maritime Solid Bulk Cargoes Code (IMSBC Code) to ensure the safety of lives at sea and the safe transportation of dry bulk cargoes,” the statement said.

    According to INTERCARGO statistics, cargo failure and shifting (i.e. liquefaction) was to blame for nine dry bulk vessel casualties from 2012 to 2018 resulting in the loss 101 lives. Among those, six involved bulk carriers carrying nickel ore from Indonesia.

    INTERCARGO expresses its utmost concern and dismay for any responsible parties that might have contributed to this potential tragic loss of 25 lives. Moisture related cargo shifting and incidents on voyage, widely known as liquefaction, continue to be a major concern for dry bulk shipping, as our Association has highlighted in earlier notes this year. It is indeed frustrating to see a lack of consolidated efforts and commitment from all stakeholders including Shippers, Receivers and Port State authorities at load and discharge ports to eliminate the problem and safeguard the lives of innocent seafarers, despite a heightened awareness of the problem by the industry through various publications produced by the P&I Clubs and Industry associations.

  • “On Bulk Carrier Casualties & Incidents” - Intercargo
    https://www.intercargo.org/bulk-carrier-casualties-incidents

    INTERCARGO’s latest Bulk Carrier Casualty Report, which provides an analysis of bulk carrier total losses between 2008 to 2017, has been submitted to the International Maritime Organization (IMO) for the consideration of the Member States, Non-Governmental Organisations and other interested parties.

    https://www.intercargo.org/bulk-carrier-casualty-report-2017

    contrairement à ce que j’indiquais hier, sur les 20 dernières années, l’explosion n’est pas la principale cause des pertes totales de navires vraquiers (53 au total).

    mention spéciale, pour une cause qui n’était pas identifiée précédemment, la #liquéfaction des cargaisons de bauxite déclenchant des effets de #carène_liquide, qui a été particulièrement meurtrière.

  • IMO Issues New Warning on Bauxite Cargoes – gCaptain
    http://gcaptain.com/imo-issues-new-warning-on-bauxite-cargoes

    According to their report, the group found that certain forms of bauxite with a large proportion of smaller particles could be subject to a newly-identified phenomenon of “dynamic separation” when there is excess moisture in the cargo.

    In such conditions, a liquid slurry (water and fine solids) can form above the solid material, according to the report. The resulting free surface effect of liquid “sloshing about” could significantly affect the vessel’s stability, leading to the risk of the ship capsizing.
    […]
    The circular requests that extreme care and appropriate action be taken, taking into account the provisions of relevant IMO instruments, when handling and carrying bauxite in bulk.

    Ah, ben c’est pas cool, dans certaines conditions d’humidité, une partie de la bauxite transportée en vrac (ses conditions habituelles de transport) peut se liquéfier. Se créent ainsi les conditions de #carène_liquide qui rend le navire instable et peut provoquer un chavirement.

    C’est ce qui est arrivé au MV Bulk Jupiter


    MV Bulk Jupiter. Photo credit : Gearbulk

    In 2015, the Bahamas-flagged MV Bulk Jupiter unexpectedly sank off the coast of Vietnam while transporting 46,000 metric tons of bauxite loaded in Malaysia. All but one of the ship’s 19 crew members were lost in the accident.

  • La Carène inaugure le VST | Ciel et Espace
    http://www.cieletespace.fr/node/9888

    Pour inaugurer le Very Large Telescope Survey Telescope (VST), l’Observatoire européen austral (ESO) a visé une « star » de l’hémisphère Sud : la nébuleuse de la Carène. L’image a été prise le 5 juin 2012, en présence de Sebastián Piñera, l’actuel président du Chili. La nébuleuse de la Carène est une région très active de formation stellaire. Elle a déjà été observée à de nombreuses reprises, mais le VST a un atout pour étudier un objet aussi vaste : il est équipé de la caméra Omegacam. Il s’agit d’un détecteur comptant 268 millions de pixels ! Pour obtenir une telle résolution, 24 capteurs sont disposés en mosaïque. Une version haute définition de l’image est visible sur le site de l’ESO. La mise en route du VST est un soulagement, car le projet a rencontré de nombreuses difficultés. Il y a dix ans, son premier miroir primaire a été cassé pendant le transport et a dû être refait entièrement. Coup du sort, le miroir secondaire a lui aussi été endommagé dans les mêmes circonstances et a dû être réparé.Le télescope est installé sur la plateforme principale de l’observatoire Paranal, aux côtés des quatre télescopes géants de 8,2 m.

    #Astronomie #Carène #VST #ESO