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Jérôme OLLIER

Importance of Duration, Duty-Cycling and Thresholds for the Implementation of Ultraviol... - 0 views

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    The introduction of a surface into the marine environment begins a process known as biofouling, which increases the weight and hydrodynamic drag of the fouled structure. This process is detrimental to maritime vessels and costs the industry ∼$150B in fuel and maintenance spending annually. Preventing the settlement of fouling organisms mitigates these issues and limits the spread of non-indigenous species (NIS). This is primarily achieved via antifouling paints. Ultraviolet light is a sterilization method used in water purification, food storage packaging, and within medical fields. Ultraviolet C (UV-C) radiation interacts with DNA to prevent growth, proliferation, and survival of bacteria, and biofilm formation. Recent progress in microelectronics technology has advanced the range of commercially available light-emitting diodes (LEDs) to include the UV wavelengths, and the reduced size and cost has allowed their integration into previously inaccessible locales. This study builds on recent progress in integrating UV-C LEDs into UV-lucent silicone tiles for fouling control. The operational cycle needed to prevent growth of Navicula incerta cells was determined. Constant irradiance at a peak of 5.77 μW/cm2 resulted in a significant reduction in diatoms within 2 h, and a 2 log and 3 log reduction after 48 h and 5 days, respectively. Duty cycling (pulsing) in all variations from 50 to 2.5%, indicated significant reductions in cell densities, and the lowest cycle could effectively reduce biofouling growth and increase the longevity of the LEDs for up to 45.6 years. Irradiance and exposure were altered over a set duration and indicated a restriction in growth between 0.01-0.82 J/cm2 and an increased mortality at irradiances > 2.65 J/cm2, suggesting an effective antifouling threshold between these dosages. The effective dosage for 1 log reduction in fouling was estimated to be 25 J/cm2 but varied according to irradiance delivery method. Effective dosage for a 1 log re
Jérôme OLLIER

US warships sent to area where Iran-backed rebels attacked Saudi-led coalition ship - @... - 0 views

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    US warships sent to area where Iran-backed rebels attacked Saudi-led coalition ship.
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    US warships sent to area where Iran-backed rebels attacked Saudi-led coalition ship.
Jérôme OLLIER

China Warship Collision Led to Standoff, Freighter Captain Says - @bpolitics - 0 views

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    China Warship Collision Led to Standoff, Freighter Captain Says.
Jérôme OLLIER

Australia Joins US-Led Coalition to Protect Ships in Strait of Hormuz - @worldmaritimene - 0 views

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    Australia Joins US-Led Coalition to Protect Ships in Strait of Hormuz.
Jérôme OLLIER

Fatigue Led to Grounding in Alaska - @Mar_Ex - 0 views

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    Fatigue Led to Grounding in Alaska;
Jérôme OLLIER

Via @divefinatic - Coast Guard report: Captain errors led up to El Faro sinking - @TB_T... - 0 views

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    Coast Guard report: Captain errors led up to El Faro sinking.
Jérôme OLLIER

Rolls-Royce unveils a vision of the future of remote and autonomous shipping - @RollsRoyce - 0 views

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    The Rolls-Royce led Advanced Autonomous Waterborne Applications Initiative (AAWA) project unveiled a vision of how remote and autonomous shipping will become a reality, changing the nature of the shipping industry.
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    The Rolls-Royce led Advanced Autonomous Waterborne Applications Initiative (AAWA) project unveiled a vision of how remote and autonomous shipping will become a reality, changing the nature of the shipping industry.
Jérôme OLLIER

Via @ian_urbina - Royal Navy discovers drug haul of heroin on four fishing boats in the... - 0 views

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    More than a tonne of heroin worth an astonishing £160 million was seized in the Indian Ocean in a successful drugs bust led by the Royal Navy.
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    More than a tonne of heroin worth an astonishing £160 million was seized in the Indian Ocean in a successful drugs bust led by the Royal Navy.
Jérôme OLLIER

Human transport has unpredictable genetic and evolutionary consequences for marine spec... - 0 views

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    New research, led by the University of Southampton, has found that human activities such as shipping are having a noticeable impact on marine species and their native habitats.
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    New research, led by the University of Southampton, has found that human activities such as shipping are having a noticeable impact on marine species and their native habitats.
Jérôme OLLIER

Coast Guard: Problem in engine room led to flooding on boat - @AP via @WRAL - 0 views

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    A problem in the engine room led to flooding on board a fishing boat off Alaska's Aleutian Islands, forcing the crew to abandon ship, the Coast Guard said Wednesday.
Jérôme OLLIER

Saudi-led Coalition Bombs Yemen's Hodeidah Port - @ShipNews - 0 views

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    Saudi-led Coalition Bombs Yemen's Hodeidah Port.
Jérôme OLLIER

The CMA CGM BOUGAINVILLE becomes the largest containership in the world sailing under t... - 0 views

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    The CMA CGM Group, a worldwide leading shipping group, is pleased to announce that the CMA CGM BOUGAINVILLE has entered the group's fleet and becomes the largest containership in the world under French flag. It is the fourth vessel of the 18000TEU series, bearing the names of great explorers. She pays tribute to the French explorer Louis-Antoine de Bougainville, who led, as Captain, the first French official world tour in the 18th Century.
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    The CMA CGM Group, a worldwide leading shipping group, is pleased to announce that the CMA CGM BOUGAINVILLE has entered the group's fleet and becomes the largest containership in the world under French flag. It is the fourth vessel of the 18000TEU series, bearing the names of great explorers. She pays tribute to the French explorer Louis-Antoine de Bougainville, who led, as Captain, the first French official world tour in the 18th Century.
Jérôme OLLIER

Saudi-Led Coalition Thwarts Red Sea Attack - @ShipNews - 0 views

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    Saudi-Led Coalition Thwarts Red Sea Attack.
Jérôme OLLIER

Saudi-led coalition calls for U.N. supervision of Yemen port - @Reuters - 0 views

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    Saudi-led coalition calls for U.N. supervision of Yemen port.
Jérôme OLLIER

UMBC-led Team Generates First Global Map Of Cargo Ship Pollution, Revealing Effects Of ... - 0 views

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    A new study in Science Advances led by UMBC's Tianle YUAN used satellite data from 2003 - 2020 to determine the effect of fuel regulations on pollution from cargo ships. The research team's data revealed significant changes in sulfur pollution after regulations went into effect in 2015 and 2020. Their extensive data set can also contribute to answering a bigger question: How do pollutants and other particles interact with clouds to affect global temperatures overall?
Jérôme OLLIER

NTSB Finds Fatigue Led to Sinking of Fishing Vessel in Alaska - @NTSB - 0 views

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    A captain's decision to get under way while fatigued led to the grounding and sinking of a fishing vessel near Whittier, Alaska, the National Transportation Safety Board said in Marine Investigation Report 22/02 released Tuesday.
Jérôme OLLIER

India allows foreign cruise ships to operate along the coast till 2024 - @livemint - 0 views

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    A task force on cruise tourism led by tourism secretary had recommended extension of cabotage relaxation beyond February 2019 ‘for sending a good signal to the cruise community.
Jérôme OLLIER

Via @neptune_ms - Two Pirate Boardings in Malacca Straits - @Mar_Ex - 0 views

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    Two separate piracy incidents on Saturday have led the Regional Cooperation Agreement on Combating Piracy and Armed Robbery against Ships in Asia
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