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Nick de Cusa

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  • 5 months later...

« Mauvaise gestion de la hauteur d'eau » 🤣

 

Saint-Malo : un bateau de tourisme s'échoue, près de 26 personnes évacuées

 

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Citation

Le navire a touché le fond «à cause d'une mauvaise gestion de la hauteur d'eau», a expliqué la préfecture maritime de la Manche.

 

Un bateau de tourisme, s'est échoué samedi sur un rocher au large de Saint-Malo et 26 personnes ont été évacuées, a appris l'AFP auprès de la préfecture maritime.

 

Selon la préfecture maritime, les personnes évacuées avaient pris place à bord du Renard, une copie du bateau du corsaire Surcouf.

 

L'alerte a été donnée au centre régional opérationnel de surveillance et de sauvetage (Cross) vers 12H00 qui a coordonné les opérations. «Le bateau, à cause d'une mauvaise gestion de la hauteur d'eau a touché le fond» a expliqué l'astreinte de la préfecture maritime de la Manche à l'AFP.

 

Mobilisée dans l'opération, la société nationale de sauvetage en mer (SNSM) a pris en charge l'évacuation des passagers. «La SNSM de St-Malo a évacué 26 personnes alors qu'il y en avait 28 à bord», a ajouté la prémar. Selon la préfecture maritime, «les gens étaient à quai une heure après l'alerte», sains et saufs.

 

Deux membres d'équipage seraient restés sur place pour aider à ramener le bateau qui était échoué à moins de deux kilomètres au nord de Saint-Malo.

 

Des photos prises par des marins locaux transmises à l'AFP montraient le voilier jaune et noir hors de l'eau la quille prise dans un rocher s'étirant sur toute la longueur du navire.

 

Les opérations se sont poursuivies afin de «dégager le bateau car il n'y a pas de voie d'eau». Une fois dégagé grâce à la marée montante, le navire est rentré au port. Il était de nouveau visible vers 18h00 dans le bassin Vauban à Saint-Malo.

 

Long de 30 mètres, le Renard est la réplique du dernier navire armé en 1812 par le corsaire malouin Robert Surcouf (1773-1827). Il est géré par la société Étoile Marine basée à Saint-Malo, qui propose des croisières sur des bateaux patrimoniaux.

 

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  • 3 weeks later...

C’est un phénomène qui m’a toujours laissé perplexe. Des marins expérimentés qui font le même trajet à longueur d’année, qui connaissent chaque caillou et se laissent piéger un jour d’inattention.

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  • 11 months later...

Les orques, à nouveau :

 

Orcas have sunk 3 boats in Europe and appear to be teaching others to do the same. But why?

 

Scientists think a traumatized orca initiated the assault on boats after a "critical moment of agony" and that the behavior is spreading among the population through social learning.

 

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Orcas have attacked and sunk a third boat off the Iberian coast of Europe, and experts now believe the behavior is being copied by the rest of the population.

 

Three orcas (Orcinus orca), also known as killer whales, struck the yacht on the night of May 4 in the Strait of Gibraltar, off the coast of Spain, and pierced the rudder. "There were two smaller and one larger orca," skipper Werner Schaufelberger told the German publication Yacht. "The little ones shook the rudder at the back while the big one repeatedly backed up and rammed the ship with full force from the side." 

 

Schaufelberger said he saw the smaller orcas imitate the larger one. "The two little orcas observed the bigger one's technique and, with a slight run-up, they too slammed into the boat." Spanish coast guards rescued the crew and towed the boat to Barbate, but it sank at the port entrance.

Two days earlier, a pod of six orcas assailed another sailboat navigating the strait. Greg Blackburn, who was aboard the vessel, looked on as a mother orca appeared to teach her calf how to charge into the rudder. "It was definitely some form of education, teaching going on," Blackburn told 9news.

 

Reports of aggressive encounters with orcas off the Iberian coast began in May 2020 and are becoming more frequent, according to a study published June 2022 in the journal Marine Mammal Science. Assaults seem to be mainly directed at sailing boats and follow a clear pattern, with orcas approaching from the stern to strike the rudder, then losing interest once they have successfully stopped the boat.

 

"The reports of interactions have been continuous since 2020 in places where orcas are found, either in Galicia or in the Strait," said co-author Alfredo López Fernandez, a biologist at the University of Aveiro in Portugal and representative of the Grupo de Trabajo Orca Atlántica, or Atlantic Orca Working Group.

 

Most encounters have been harmless, López Fernandez told Live Science in an email. "In more than 500 interaction events recorded since 2020 there are three sunken ships. We estimate that killer whales only touch one ship out of every hundred that sail through a location."

 

The spike in aggression towards boats is a recent phenomenon, López Fernandez said. Researchers think that a traumatic event may have triggered a change in the behavior of one orca, which the rest of the population has learned to imitate.

 

"The orcas are doing this on purpose, of course, we don't know the origin or the motivation, but defensive behavior based on trauma, as the origin of all this, gains more strength for us every day," López Fernandez said. 

Experts suspect that a female orca they call White Gladis suffered a "critical moment of agony" — a collision with a boat or entrapment during illegal fishing — that flipped a behavioral switch. "That traumatized orca is the one that started this behavior of physical contact with the boat," López Fernandez said.

 

Orcas are social creatures that can easily learn and reproduce behaviors performed by others, according to the 2022 study. In the majority of reported cases, orcas have made a beeline for a boat's rudder and either bitten, bent or broken it.

 

"We do not interpret that the orcas are teaching the young, although the behavior has spread to the young vertically, simply by imitation, and later horizontally among them, because they consider it something important in their lives," López Fernandez said.

 

Orcas appear to perceive the behavior as advantageous, despite the risk they run by slamming into moving boat structures, López Fernandez added. Since the abnormal interactions began in 2020, four orcas belonging to a subpopulation living in Iberian waters have died, although their deaths cannot be directly linked to encounters with boats.

 

The unusual behavior could also be playful or what researchers call a "fad" — a behavior initiated by one or two individuals and temporarily picked up by others before it’s abandoned. "They are incredibly curious and playful animals and so this might be more of a play thing as opposed to an aggressive thing," Deborah Giles, an orca researcher at the University of Washington and at the non-profit Wild Orca, told Live Science.

 

As the number of incidents grows, there is increased concern both for sailors and for the Iberian orca subpopulation, which is listed as critically endangered by the IUCN Red List. The last census, in 2011, recorded just 39 Iberian orcas, according to the 2022 study. "If this situation continues or intensifies, it could become a real concern for the mariners' safety and a conservation issue for this endangered subpopulation of killer whales," the researchers wrote. 

 

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  • 7 months later...

Je ne sais pas si ce cargo-trimaran-goélette donnera satisfaction à son armateur, mais il ne manque pas d'originalité :

 

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How VPLP developed an innovative shipping concept for VELA

 

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[...] To validate the concept, VPLP Design felt it necessary to create two virtual vessels that could be put through numerous digital simulations and, in collaboration with the team at MerConcept, routing scenarios between Europe and North America. “A 60 m monohull with two decks and a 65 m trimaran with transverse loading,” says Tanguy Leterrier, VPLP Design’s lead architect on the project. “With the latter we managed to make significant gains on a crossing with the same payload, about 350 tonnes, which is equivalent to 560 standard European pallets or 450 US pallets.” 

 

And the result was VELA, a two-masted schooner with a 25 m beam and an onboard crane. She will always dock port side to and will be completely independent when it comes to loading and unloading, an especially important feature when calling at secondary ports along her route. The floats stabilize the platform while the centre hull supports the majority of the displacement. Much of the difficulty resided in finding the right geometry and distribution of the volumes to ensure that the floats remain in contact with the water when the ship is sailing empty. “We wanted to avoid installing the complex ballasting systems that are the bane of the freighter, and which can contribute to spreading invasive species,” says Simon Watin. Aluminium was chosen for the hull material because of the significant weight savings it affords compared to a conventional steel construction, without falling short of the requirements of a working vessel in terms of structural strength.

 

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Meanwhile in China:

 

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China’s Nuclear-Powered Containership: A Fluke Or The Future Of Shipping?

 

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Today’s shipping industry finds itself as mentioned earlier in a bind, even before recent events that caused both the Panama and Suez canals to be more or less off-limits and forcing cargo ships to fall back to early 19th century shipping routes around Africa and South America. With faster cargo ships traveling at or over 30 knots rather than about 20, the detour around Africa rather than via the Suez Canal could be massively shortened, providing significant more flexibility. If this offering also comes at no fuel cost penalty, you suddenly got the attention of every shipping company in the world, and this is where the KUN-24AP’s unveiling suddenly makes a lot of sense.

 

Naturally, there is a lot of concern when it comes to anything involving ‘nuclear power’. Yet many decades of nuclear propulsion have shown the biggest risk to be the resistance against nuclear marine propulsion, with a range of commercial vessels (Mutsu, Otto Hahn, Savannah) finding themselves decommissioned or converted to diesel propulsion not due to accidents, but rather due to harbors refusing access on ground of the propulsion, eventually leaving the Sevmorput as the sole survivor of this generation outside of vessels operated by the world’s naval forces. These same naval forces have left a number of sunken nuclear-powered submarines scattered on the ocean floor, incidentally with no ill effects.

 

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