Marine Acoustics, Inc.

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The crew of the USS Indiana, a Virginia-class, fast-attack #submarine that spent three weeks in the seas near the North Pole during Operation Ice Camp 2024, were awarded the US Navy’s Arctic Service Medal on Tuesday. Adm. Lisa Franchetti, Office of the Chief of Naval Operations, presented the medals to officers and sailors during a ceremony at Naval Submarine Base New London, Conn. The #Arctic Service Medal is awarded to #Navy and United States Marine Corps personnel who show “excellence and significant #contributions to #nationalsecurity and #maritime #superiority in the Arctic region,” according to a Navy statement. “Your three-week operation during #IceCamp advanced the #lethality of our #submarineforce and showcased to the world that our Navy can operate anywhere and anytime — in any maritime environment,” Franchetti said at the ceremony. Cmdr. Kyle McVay, commanding officer of the USS Indiana, said the award was due to the accomplishments of the crew. “Receiving the Arctic Service Medal is a testament to the hard work and dedication of every #sailor onboard,” he said. #mai #marineacoustics #naval #submarines #capability #deathfrombelow #underseawarfare Commander, Submarine Forces | Commander, Submarine Force Atlantic #innovation #technology https://lnkd.in/egzbjSjv

Improved Maintenance, 80% Combat Surge Goals in New Navy NAVPLAN Achievable, Says CNO Heather Mongilio September 19, 2024 7:01 PM Office of the Chief of Naval Operations Adm. Lisa Franchetti discusses her recently released #Navigation Plan for America’s #Warfighting #Navy in Washington D.C., Sept. 19, 2024. The goals set by Chief of Naval Operations Adm. Lisa Franchetti in her new fleet-wide guidance may be tough, but they are realistic, the head of the US Navy said Thursday. Franchetti released her America’s Warfighting Navy Navigation Plan on Wednesday. The navigation plan, dubbed “Project 33” after Franchetti being the 33rd #CNO, includes goals such as 100 percent rating fill, 100 percent #recruiting shipping fill and a 50 percent delayed entry program posture. The plan also calls for an 80 percent #combat surge-ready posture for the Navy’s #ships and #aircraft. The deadline for the goals is 2027. The goals laid out in the plan were agreed to by the Navy’s admirals, its tech units and the single accountable person responsible for the goal completion, Fanchetti told the audience at a Thursday #Maritime #Security Dialogue event hosted by Center for Strategic and International Studies (CSIS) and the U.S. Naval Institute. For example, Vice Chief of Naval Operations Adm. Jim Kilby is responsible for the reduction of the backlog in maintenance, #USNI News reported. “We are shooting for very high, very tough stretch #goals here, and I know that, but the only way we’re going to get there if you set those goals that high and we really execute the #strategic discipline that we need to focus on these goals, focus on the things that are in our five plus four, which are the #capabilities that we’re going to contribute to the joint workfighting process,” Franchetti said Thursday. “That is what we need to do.” #mai #marineacoustics #capability #innovation #forcemultiplier #technology #usnavy #underseawarfare #submarines #navalwarfare #warfare #readiness https://lnkd.in/gQEsPZfm

Stranding responders tried to save a young killer #whale stranded on Carmel River State Beach on the Central #California Coast Tuesday. Unfortunately the #animal died in transit to a #rehabilitation facility in Santa Cruz. A necropsy on Wednesday found no underlying injuries or health problems. Teams from The Marine Mammal Center, Joseph M. Long Marine Laboratory, and Moss Landing Marine Laboratories combined forces Monday morning to respond to the male whale stranded on the beach. No other killer whales were seen in the area at the time of the stranding. “The situation was urgent because the animal was under a lot of stress and we’re thankful so many of our partners were ready to help,” said Justin Viezbicke, California stranding coordinator for NOAA Fisheries’ West Coast Region. #NOAA Fisheries coordinates the West Coast #MarineMammal Stranding Network, which includes the three responding organizations. California State Parks staff also assisted. #mai #marineacoustics #conservation #collaboration #marinemammals #marinescience #oceanscience NOAA: National Oceanic & Atmospheric Administration https://lnkd.in/eDqk4XRY

Concern over the #impact of #multibeam #echosounders (MBES) on #marine life has increased in recent years. A thorough impact assessment of #acoustic sources requires both accurate #modeling of the source and radiated #sound field, and a #biological assessment. The Joint #Industry Program Acoustic Modelling #Workshop in 2022 provided a set of verification scenarios for a deep-water MBES to compare modelling approaches and assess agreement across models. This work presents several relevant #models designed to compute both the MBES beam patterns and propagated acoustic field. Key acoustic metrics used in impact assessment were calculated and compared using these models. The work confirmed that geometrical #acoustics is well suited to the unique radiation patterns of MBES. Ray-tracing programs are relevant as well at short ranges and at long horizontal distances in the presence of large #soundspeedgradients. The estimation of cumulative sound exposure along a survey track is most often dominated by exposure to the main transmit beam of each sector. Accurate modelling of the near field was demonstrated to have a direct impact on final acoustic metrics and threshold ranges for various #marinemammal hearing groups. Author Michael Smith University of New Hampshire #mai #marineacoustics #acousticmodel #innovation #research #marinemammals #marinescience #marinemammals #sonar #oceanography #marinebiology #JASA Acoustical Society of America https://lnkd.in/enE3Y3Pp

The new #fleet-wide guidance from the US Navy’s top officer focuses on preparing the service for a potential #war with China by 2027 as the #maritime component of a joint “#warfighting ecosystem.” Office of the Chief of Naval Operations Adm. Lisa Franchetti will publicly issue her “America’s Warfighting #Navy,” guidance to the wider fleet this week, more than a year into leading the Navy. The plan outlines her priorities for the service, which include fixing maintenance backlogs and recruiting, according to the final draft reviewed by #USNI News. Dubbed “Project 33,” Franchetti’s service-wide guidance wrestles with preparing for war with China with a short time horizon and problems caused by legacy readiness and recruiting deficits and the #ships and #aircraft currently in inventory. “We cannot manifest a bigger traditional Navy in a few short years, nor will we rely on mass without the right #capabilities to win the sea control contest,” reads the plan. “Without those #resources, however, we will continue to prioritize readiness, #capability, and #capacity —in that order. We must recognize that the Navy faces real #financial and #industrial constraints, including the once-in-a-generation cost of recapitalizing our [sea-based] #strategic #nuclear #deterrent.” Franchetti identified seven areas to improve – chief of which is fielding mission-capable ships, #submarines and aircraft. The goal is to surge up to 80 percent of the surface fleet as part of a so-called “#combat-ready surge force” that would be available on short notice for combat #operations. #mai #marineacoustics #usnavy #underseawarfare #innovation U.S. Naval Institute #shipbuilding #collaboration https://lnkd.in/gK2_6-AZ

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#Dynamic and #changing #ArcticOcean conditions likely caused three major #mortality events in the eastern North Pacific gray #whale #population since the 1980s, a new study has found. During each of these die-offs, including one that began in 2019 and is ongoing, the #graywhale population was reduced by up to 25% over just a few years, said Joshua Stewart, an assistant #professor with Oregon State University’s #MarineMammal Institute and the study’s lead author. “These are extreme population swings that we did not expect to see in a large, long-lived #species like gray whales,” Stewart said. “When the availability of their prey in the Arctic is low, and the whales cannot reach their feeding areas because of sea ice, the gray whale population experiences rapid and major shocks.” “Even highly mobile, long-lived species such as gray whales are sensitive to #climatechange impacts. When there are sudden declines in the quality of prey, the population of gray whales is significantly affected.”  The findings were just published in the journal Science. #mai #marineacoustics #conservation #science #marinemammals #oceanscience #marinescience https://lnkd.in/e3wP7jB7

The AZTI #team has built an automatic #classification #model that identifies the main #pelagic #species in the Bay of Biscay, such as anchovy, sardine, and Atlantic mackerel, based on their schooling behaviour. The classification of fish schools detected by #acoustic #echosounders represents a crucial advancement for managing pelagic species found in highly diverse #ecosystems and enables the study of specific behavioural changes in the presence of other species. The #AI model, trained with poorly labelled data, uses fully and partially labelled schools. The model outputs are #probabilistic, providing the likelihood of a given school belonging to each study species. Comparing the probabilities assigned to different species enables the assessment of the model’s reliability in each prediction. The results are promising: the use of AI in acoustic data from #sonars and #echo sounders on #fishing vessels has emerged as an effective strategy to enhance fisheries management. Automatically discriminating schools, in addition to reducing the data processing time in scientific surveys, can increase the accuracy of the data uses for the assessment of the annual pelagic species distribution and abundance. Furthermore, automatic school classification can potentially increase fisheries efficiency and sustainability by reducing significantly the by-catch. The results published in the ICES Journal of #MarineScience, show a 63.5% accuracy in classifying labelled schools, and about 80% accuracy considering labelled and unlabelled schools at haul-level. Aitor Lekanda Guarrotxena, a #marine #scientist doing his PhD in AZTI under the supervision of Guillermo Boyra and Maite Louzao Arsuaga, highlights the broader implications of the model: “Automating species identification not only reduces data processing times for scientific surveys but also provides new opportunities to study the schooling behaviour and develop new technologies for increasing the efficiency and sustainability of the fishing industry.” #mai #marineacoustics #innovation #aiml #artificialintelligence #technology #oceanscience #marinescience https://lnkd.in/e6CZ3Wnu

As the #Soviet #Navy rusted away in port following the dissolution of the #SovietUnion in 1991, the US Navy undertook significant cuts in both #shipbuilding and #ship #maintenance. Of eight public #naval #shipyards, four were closed, and the #workforce declined from a peak of 62,000 to a low of 21,000.The results of this divestment were not immediately noticeable in the nearly uncontested post–#ColdWar era; however, as #China rapidly expands its naval force supported by a massive shipbuilding #industrialbase, the #UnitedStates is struggling not only to grow the U.S. fleet, but also to maintain the ships already in commission. Fortunately, consensus is building in US Congress that the Navy needs additional #resources and industrial #capacity to sustain U.S. naval #superiority. Through the #Shipyard Infrastructure Optimization Plan, efforts to #modernize and recapitalize the public shipyards are underway, and the federal #government is pressing private yards and the industrial base to build both their shipbuilding and ship maintenance capabilities.2 In addition, the Navy recently commissioned a study to determine the need for a fifth naval shipyard. If the Navy concludes an additional public #navalshipyard is needed, it will have to choose whether to refurbish a dormant facility or build one from the ground up. Both options have advantages and disadvantages, but a new build may be the better choice. #mai #marineacoustics #usnavy #innovation #technology #capability #forcemultiplier #greatpowercompetition U.S. Naval Institute Jeong Soo (Gary) Kim https://lnkd.in/ezimVVG4