Articles tagged with Ships
A Norwegian University of Science and Technology study highlights seafarers' concerns about autonomous ships' technical safety, trust in technology, and crew competence. The researchers aim to ensure safer use of advanced technology and increase seafarers' trust in autonomy by addressing the challenges highlighted by the seafarers.
Researchers found clouds in North Atlantic region formed with fewer, larger droplets, yet remained unchanged in reflectivity; overall water content increased to maintain balance.
Researchers at Texas A&M University have created a system called SMART-SEA to combat marine collisions by providing seafarers with real-time guidance on how and when to maneuver their vessel. The system combines raw radar imaging data with advanced machine learning to identify stationary objects and recommend safe actions.
A new study found that historic droughts could become common for Gatún Lake, the main source of water for the Panama Canal locks. The study projects that water levels will decrease and increase evaporation under high-emissions scenarios.
Researchers at Chalmers University of Technology discovered that ship traffic triggers large methane emissions in shallow areas, including ports. The study found that cruise and container ships caused the most frequent and largest measured methane releases.
A comprehensive report cataloging the most widespread and damaging drought events since 2023 reveals food, water, energy crises and human tragedies. The 'Drought Hotspots Around the World 2023-2025' report underscores the need for systematic monitoring of drought's impacts on lives, livelihoods, and ecosystems.
A recent study has gathered the first video evidence of anchoring and chain damage in Antarctic waters, highlighting a critically understudied conservation issue. The research found that anchor impacts can cause localized destruction to seafloor habitats, leading to the loss of slow-growing, sessile species.
Researchers from Osaka Metropolitan University developed an explainable AI model for ship navigation that explains the basis for its decisions and intentions using numerical values. This technology aims to increase trust among maritime workers and contribute to the realization of unmanned ships.
New study suggests marine shipping emissions will decrease by 30-40% by 2030 compared to 2008 levels, but may not meet net-zero goal for 2050. The International Maritime Organization has approved new emission reduction policies.
Researchers developed a machine learning-powered fluid simulation model that significantly reduces computation time without compromising accuracy. The new surrogate model maintains the same level of accuracy as traditional particle-based simulations while reducing computation time from approximately 45 minutes to just three minutes.
A new analysis of 105-year-old data found that while dazzle camouflage had some effect, the 'horizon effect' had a much greater influence on confusing enemy ships. The study, led by Aston University researchers, showed that when people looked at a ship in the distance, they significantly underestimated its direction of travel.
A recent study from the University of Missouri and Yale University found that restricting flavored e-cigarettes leads to a decrease in vaping among young adults. However, this restriction also increases traditional cigarette smoking among young adults compared to states without such restrictions.
A deadly ciliate parasite has decimated sea urchin populations in the Caribbean, Red Sea, and Indian Ocean, with mortality rates reaching over 90%. The International team of researchers is working to track the disease and preserve sea urchins, which play a crucial role in maintaining coral reef health.
Researchers at KTH Royal Institute of Technology developed a model to estimate biofilm growth, enabling optimal hull cleaning schedules to save on fuel consumption. Biofilm fouling can increase fuel friction by up to 18%, leading to higher emissions and consumer prices.
A new study from the University of Surrey identifies targeted ventilation strategies as crucial to preventing super-spreader events on cruise ships. The research found that improved air circulation in crowded areas can significantly reduce airborne infection transmission risk, with CO2 levels increasing in higher occupancy spaces.
New research from Flinders University suggests the Zuytdorp shipwreck was caused by a storm, not poor navigation. The authors analyzed historical records and weather patterns to support their findings.
A study suggests that increased marine traffic and noise from wind farm surveys may be contributing to whale deaths. Whales died off the coast of New Jersey near proposed wind farms, leading researchers to investigate the impact of survey work on cetacean populations.
A new study led by the University of Washington found that only about 7% of areas at highest risk for whale-ship collisions have any measures in place. The team identified high-risk regions, including coastal areas along the Mediterranean, Americas, southern Africa, and parts of Asia, where whales and ships are most likely to meet.
A study of human skeletal remains from the Tudor warship Mary Rose reveals that handedness may influence clavicle bone chemistry as people age. The analysis found increased mineral content and decreased protein content in right clavicles compared to left, suggesting repeated stress on the right side during activities like sailing.
A recent study found that retrofitting US shipping fleet from internal combustion engines to battery-electric systems could reduce maritime CO2 equivalent emissions by 34-73% in 2035. Electrifying ships is more challenging than electrifying cars, but declining battery costs and cleaner grids make it feasible.
The Flexible Clean Propulsion Technologies project aims to develop innovative clean solutions for maritime transport and off-road machinery, reducing greenhouse gas emissions by up to 100% through the use of zero- and low-carbon fuels. The consortium brings together key players in Finland and international partners to shape the future ...
A new study published in Nature Climate Change predicts that global warming will lead to increased co-occurrence of whale sharks and large ships, potentially increasing the likelihood of ship strikes. The research found that some newly suitable habitats overlapped with busy shipping routes, threatening the already endangered species.
A new study by Cornell University finds that liquefied natural gas (LNG) exported from the US has a one-third larger carbon footprint than coal when considering processing and shipping. LNG's extraction, processing, transportation, and storage account for approximately half of its total greenhouse gas footprint.
Underwater noise pollution from human activities significantly impacts the ability of orcas to hunt successfully in the Salish Sea. The study found that increased ambient noise levels, particularly around vessel propellers, interfere with echolocation behavior and hunting efforts. This hindrance affects females more than males, potenti...
A new study finds that reduced sulfur emissions from shipping industry likely contributed to nearly 20% of record-breaking 2023 warmth, while regulations also accelerated warming. Further research is needed to understand the magnitude of climate response.
A new neural network-based tool can predict the emergence of rogue waves up to five minutes into the future with 75% accuracy. The tool has been trained on 14 million sea surface elevation measurements and was able to correctly forecast rogue waves near 172 buoys in the continental US and Pacific Islands.
A recent analysis found that thick sea ice flowing south from the Arctic Ocean has shortened the shipping season in several parts of the Northwest Passage between 2007 and 2021. This means the region is unlikely to become a viable alternative to traditional shipping routes despite hopes fueled by global warming.
Researchers at Cornell University have used a combination of almond analysis, pottery dating, and radiocarbon dating to determine the Kyrenia shipwreck's age. The team estimated that the ship sank between 296-271 BCE, with a strong probability it occurred between 286-272 BCE.
A revised radiocarbon calibration curve for the period between 433-250 BCE has been established, allowing for improved date estimates on Greek shipwrecks. The study confirms the Kyrenia Ship's final voyage around 280 BCE, slightly later than previous estimates.
A modelling study found substantial reductions in atmospheric aerosols and cloud droplet number density after the IMO 2020 regulation reduced sulphur content in shipping fuel. This led to an estimated 80% increase in Earth's heat energy retained, equivalent to a significant radiative warming effect.
Researchers have identified heavily used shipping lanes that pass through crucial whale shark feeding grounds, posing a threat to this endangered species. Targeted measures, such as reducing ship speed, could help minimize the impact on the shipping industry while protecting whale sharks.
A new study by Chalmers University of Technology finds that ship scrubber water discharges caused EUR 680 million in pollution costs between 2014 and 2022. The researchers also found that most shipping companies have already recouped their investments in scrubbers, making cheap heavy fuel oil a more lucrative option.
A new study suggests that ammonia could be a smart and energy-efficient fuel in the race to achieve net zero in shipping. The NTNU researchers' model shows that IMO's ambitions have a strong impact on shipowners' choice of propulsion systems.
A University of Melbourne expedition revealed that wind is a key cause of colossal rogue waves. The team's observations confirmed theories and provided critical information for future rogue wave prediction models.
Norwegian seafarers express strong doubts about the safety of autonomous ships, citing concerns about loss of job independence and reduced crew control. Researchers studied bridge officers' attitudes towards automation and found a link between professional pride and mistrust.
A UMass Amherst-led team developed biofilm-resistant glass using UV radiation, which prevents biofilm formation on surfaces in underwater environments. The technology can be used for various applications, including disinfection of transparent surfaces like windows and camera lenses.
A team of researchers developed a time-optimal control method for autonomous ships, optimizing maneuvering performance in dynamic sea conditions. The new control system accounts for various forces affecting ship movement and can improve efficiency and safety, reducing shipping costs and carbon emissions.
Researchers used a cruise ship to conduct marine science in Antarctica, highlighting an eco-friendly alternative to traditional research methods. The collaboration increased efficiency and reduced costs, allowing for more comprehensive studies of the Antarctic Ocean.
Researchers tracked bowhead whale migrations using acoustic data, revealing shifts in winter departure times and increased summer presence in the Chukchi Sea. Climate-driven changes may push whales into shipping lanes, posing risks to both humans and animals.
A study from Chalmers University of Technology found that the production and use of ammonia as a marine fuel can lead to eutrophication, acidification, and emissions of potent greenhouse gases. Researchers warn that the pursuit of low-carbon fuels may create new environmental challenges.
Researchers have discovered that whirligig beetles use a lift-based thrust mechanism to achieve record-breaking speeds, challenging previous explanations of their propulsion system. This finding offers valuable insights for bio-inspired robotic ship design and uncrewed boat development.
Korea Maritime & Ocean University researchers have developed a new method for assessing the path-following performance of autonomous ships in adverse weather conditions. The computational fluid dynamics model can provide more accurate predictions of path-following performance and enhance safety in autonomous marine navigation.
Researchers found that commercial ship noise completely masks Cook Inlet beluga whales' most commonly used calls, compromising their critical communication. The study documents the complex vocal repertoire of the population and provides a quantified measure of masking by ship noise on their communication.
A new study reveals that shipwrecks are providing a sanctuary for fish, corals, and other marine species in areas open to destructive bottom towed fishing. Marine life density is significantly higher within wreck sites than in control areas.
Scientists at the University of Copenhagen and University of Victoria have developed an AI formula to predict rogue waves, which can split apart ships and damage oil rigs. The new knowledge can make shipping safer by identifying the likelihood of being struck by a monster wave at sea.
Scientists have developed an AI system that accurately maps the surface area and outline of giant icebergs in one-hundredth of a second. This technology surpasses manual interpretation methods, which can take several minutes to delineate an iceberg's outline, and offers insights into their impact on the polar environment.
A team of researchers from Cambridge University has decoded over 100 French love letters written in the 18th century, revealing universal human experiences and emotional struggles. The letters were sent to sailors on a ship captured by Britain during the Seven Years' War, but never reached their recipients.
Researchers found that higher ventilation rates do not necessarily prevent the spread of airborne diseases in cruise ship cabins. The ideal ventilation strategy involves medium flow rates during occupancy and increased airflow after evacuation to minimize droplet spreading.
The ISOOS system uses a smart carrier as the mobile base and control center, connecting multiple UAVs, USVs, and AUVs for simultaneous 3D observation of targeted regions. This enables fast mapping of ocean floor and studying submesoscale eddies, previously difficult to access due to variability in space and time.
The project aims to assess the operational resilience of microgrids on DoD installations and ships, using new operational resilience indexes developed by Lehigh University researcher Javad Khazaei. The team will develop a dashboard to monitor resilience indexes in real-time, providing recommendations for improving the systems.
A new study has shed light on the origins of St Helena's 'liberated' Africans, who were brought to the island between 1840 and 1867. The research reveals that they most likely originated from areas between northern Angola and Gabon in West Central Africa.
Sperm and northern bottlenose whales frequently feed on live halibut escaping from a deep-sea trawler net. The study found that these whales were only spotted when the catch was Greenland halibut, not redfish or thorny skate.
Researchers have identified an operational strategy that can reduce shipping emissions by up to a quarter by combining modern sail technology with efficient routing systems. The study found that this approach can provide greater assurances of carbon savings by mitigating the impact of unpredictable weather patterns.
The IMO's current climate targets are insufficient to address the industry's growing CO2 emissions, which now account for 3% of global emissions. The organization lacks the political instruments and resources needed to implement more ambitious goals.
A new study from Chalmers University of Technology reveals that the marine environment is at risk due to ship emissions, particularly from scrubber discharge water and antifouling paint. The cumulative environmental risk in ports was found to be five and thirteen times higher than acceptable limits.
Researchers at Flinders University identified rare images of Moluccan vessels in NT rock art paintings, potentially providing evidence of visitors from Southeast Asia to northern Australia. The depictions feature distinctive shape and configuration, indicating a degree of intimate knowledge of the craft.
Scientists have successfully tracked fin whales using fibre-optic cables in the Norwegian Arctic archipelago of Svalbard. The system, called Distributed Acoustic Sensing (DAS), allows for simultaneous location and tracking of whales over an 1800 km² area with relatively low infrastructure investment.
A multidisciplinary team discovers three new active hydrothermal vent fields over a 434-mile stretch of the Mid-Atlantic Ridge, revealing rich biological communities and vast marine life. The discovery highlights the need for more research to understand the effects of deep-sea mining on these unique ecosystems.
Researchers at Chalmers University of Technology have developed a unique method to reduce ship aerodynamic drag, which could lead to significant energy efficiency gains and reduced fuel consumption. The method uses the Coanda effect to create a more efficient airflow around the ship's superstructure, reducing drag by 7.5%.
A large typhoid outbreak on a Dutch ship was traced to contaminated drinking water, with 72 cases confirmed. The investigation found that sewage containing Salmonella typhi leaked into freshwater tanks, highlighting the importance of regular water quality inspections.