US Navy - Yhdysvaltain laivasto

magitsu kirjoitti:
Harpoon-patukan lataaminen P-8 Poseidoniin. On se melkoinen sikari. Tosin en tiedä olisiko se Laivue 2020:n tuleva pienempi kun siinä se taistelukärki puolittui ja kantama tuplautui.
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Olikos se nyt niin, että Harpoon alkujaankin suunniteltiin tuollaiseen käyttöön mihin sitä oltiin tuolla videolla virittelemässä? Siis kannettavaksi merivalvontakoneissa?
 
The U.S. industrial base can’t build the 355-ship fleet required by national strategy, nor can the Navy afford to repair it — unless the military and industry can use AI and other advanced technologies to slash costs, the service’s top acquisition official said Tuesday.

“For the Navy and the Marine Corps, if we can’t solve and fundamentally drive some of the costs out of these ships over the long term, both in construction and in repair, we’re not going to be able to achieve the National Defense Strategy,” said James “Hondo” Geurts, assistant Navy secretary for research, development and acquisition.

Geurts spoke Tuesday at the Defense One Tech Summit in Washington, D.C.

“It’s not intuitive that at a tech conference, we’d be talking about shipbuilding,” he said. “But quite frankly, there are so many technologies that could fundamentally shift the cost curves and the affordability curves in shipbuilding, those that can make the connection first will have great market opportunities.

“There’s kind of this notion that shipbuilding’s a pure sweat-and-muscle game,” he said, “But you look at some of the places you can apply technology now that you have a digital ship from the start” — meaning one that was designed and to some extent modeled and simulated digitally.

Start with training, he said. “The industrial base isn’t nearly as strong as it used to be, particularly on the skilled trades.” Half of shipbuilding employees have less than five years’ experience. “I can wait 25 years until they have 30 years’ experience, or I can find ways to accelerate that training.”

Then work on construction. The first Ford-class aircraft carrier took 30 to 40 million man-hours to build, while the second will require something like 19 percent fewer, he said. But that curve has to keep coming down if the fleet is going to grow fast enough to meet the defense strategy. AI can help, he suggested.

Then there’s ship repair, another traditionally capital-intensive endeavor that must become far more efficient if the National Security Strategy is to succeed, Guerts said. Right now, he said, the surface fleet alone requires an average of 100 major ship repairs each year — and that’s only going to increase as the fleet grows.

“We have to drive out costs of ship repair; otherwise, we won’t be able to afford the fleet we have,” he said.

Guerts put out a call to industry.

“Folks that can help us get to that point, I think will be very, very interesting to meet…There’s a large opportunity space for folks to help in that, who have not traditionally been able to get into that market,” he said. Companies and people “who make AI tools, machine learning tools, unmanned tools — I would ask you to think more broadly than ISR and some of the more traditional problems.”
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https://www.defenseone.com/technolo...eet-says-navys-top-buyer/149292/?oref=d-river

Tällä hetkellä artikkelin mukaan jenkkilaivasto vaatii 100 isoa korjausta vuodessa. Miten heillä riittää kapasiteetti kun kaluston määrä kasvaa?
 
WASHINGTON -- The U.S. Navy’s $122.3 billion Columbia-class ballistic missile submarineprogram is off to an inauspicious start after faulty welding was discovered in several missile tubes destined for both the Columbia and Virginia-class programs, as well as the United Kingdom’s follow-on SSBN program.

In all, 12 missile tubes manufactured by BWXT, Inc., are being scrutinized for substandard welds. Seven of the 12 had been delivered to prime contractor General Dynamics Electric Boatand were in various stages of outfitting, and five were still under construction.

The Navy and Electric Boat have launched an investigation, according to a statement from Naval Sea Systems Command spokesman Bill Couch.

“All BWXT welding requiring volumetric inspection has been halted until the investigation is complete,” Couch said.
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https://www.defensenews.com/breakin...-after-bad-welds-discovered-in-missile-tubes/
 
Pitkä juttu US Navyn pintatorjuntaohjuksista.

The U.S. Navy Is Re-Arming for Surface Warfare
An explosion of new anti-ship missiles
5JSM33VCCFHXZNGQSCBWYUWLQI-e1534131996830-970x350.jpg






WIB sea August 14, 2018 David Axe

U.S. Navy81


In 2016 the U.S. Navy possessed just one surface-launched anti-ship missile type — Boeing’s Harpoon, a munition that first entered the fleet in the 1970s.
Two years later, the Navy had added no fewer than five additional ASM types to the fleet and also updated the Harpoon. The fast expansion of the U.S. fleet’s ship-sinking arsenal pointed to escalating seaborne threats from Russia and China.
The U.S. Defense Department’s budget for the 2018-to-2019 fiscal year, “continues the work of the department to maximize as many munitions production lines as possible — particularly those specific to the high-end fight,” according to a U.S. Senate summary.
As part of the budget, the Navy was asking Congress for $27 million to being upgrading its Harpoons to the new Block II+ version, which adds GPS and a data-link allowing missile to switch targets mid-flight.

At the same time, the Navy was buying its second batch of new Long-Range Anti-Ship Missiles from Lockheed Martin, adding 35 of the new munitions to the initial batch of 25 it bought in 2017.
The Navy was also paying Raytheon to begin modifying old Tomahawk land-attack missiles for anti-ship missions — part of a $78-million account for the fiscal year. Raytheon was under contract to provide the first 32 Maritime Strike Tomahawks in 2020.

At the same time, the Navy had just tapped Raytheon and Norwegian firm Kongsberg to build, under an initial $15-million contract, their Naval Strike Missile for the Navy’s Littoral Combat Ships and future frigates.

Finally, the Navy was paying Raytheon to modify in-service SM-2 and SM-6 ship-launched surface-to-air missiles for the anti-ship role, as part of the service’s $490-million investment in the Standard Missile program for the fiscal year — a sum that also paid for 125 new missiles.
The explosion of new missile efforts represented a remarkable turnaround for the U.S. fleet. In early 2016 Robert Work, then the U.S. deputy defense secretary, warned of “a resurgent Russia and a rising China” on the high seas.
Defense Secretary Ashton Carter, Work’s boss, laid out the argument. “We face competitors who are challenging us in the open ocean,” Carter said, “and we need to balance investment in those capabilities — advanced capabilities — in a way that we haven’t had to do for quite a while.”
During the Cold War, the Navy excelled at sinking enemy ships. It possessed what were, at the time, two of the world’s best anti-ship missiles — the Harpoon and a first-generation Tomahawk anti-ship missile.
With these two weapons, the U.S. Navy was prepared to engage Soviet warships if the Cold War had ever turned hot. But after the Soviet Union collapsed in 1991, the U.S. fleet shifted its attention to land. It launched missile and air raids on Iraq, Serbia, Afghanistan, Iraq again, Libya and Syria, among others.


“The U.S. has been neglecting its anti-ship capabilities since at least the early 1990s,” Eric Wertheim, an independent naval analyst and author of Combat Fleets of the World, said in 2016. Confident that at-sea combat was history, the Navy decommissioned all its Tomahawk anti-ship missiles and removed Harpoons from many ships.

The result was a yawning gap in American naval power. U.S. ships were adept at hitting targets on land but on the high seas they were all but powerless. When the Chinese navy began its build-up in the early 2000s, and, a few years later, Russia began restoring its own neglected fleet, both countries exploited the American gap.

Moscow and Beijing equipped their ships with a wide range of highly capable anti-ship missiles with greater range and destructive power than the aging Harpoon possesses.
A Harpoon can hit a ship at a maximum range of around 100 miles. Russia’s Klub missile, by contrast, can travel as far as 400 miles. China’s YJ-18 is roughly equivalent to the Klub and might even be an illicit copy of the Russian munition.

The surface-warfare imbalance persisted for years. Then in 2011, Pres. Barack Obama announced that his administration would “pivot” to the Pacific and dedicate more military, diplomatic and economic resources to the region as a counterweight to China. In 2014, Russian troops invaded Ukraine, a de facto announcement of Russia’s return to great-power status.

The Navy realized it could no longer assume it would never have to wage a war at sea. It also realized that it lacked the weaponry to do so.
Working under the radar over several years, military engineers and their civilian defense-industry counterparts devised a wide range of new anti-ship weapons. The Pentagon’s 2017 budget paid for the first significant production of the LRASM as well as anti-ship modifications for Tomahawks and SM-6s.
A Tomahawk can travel as far as 900 miles. A LRASM — 200 miles. The SM-2 and SM-6 in surface-to-air mode can reach 90 miles and 150 miles, respectively. The Naval Strike Missile roughly matches the Harpoon’s 100-mile range.

As recently as 2016 the Navy’s warships were badly out-gunned by Russian and Chinese ships. In 2018, the U.S. fleet was on the cusp of reversing that dynamic.

When significant numbers of new anti-ship missiles reach the front-line fleet in coming years, the U.S. Navy could return to its Cold War status as the world’s leading surface-warfare force.
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http://warisboring.com/the-u-s-navy-is-re-arming-for-surface-warfare/
 
Kustaanmiekka kirjoitti:
USA:n laivasto kehittää ”armeijalimaa”, joka pysäyttäisi vihollislaivoja – Kyseessä voi olla kevlarin ja hämähäkinseitin kaltainen ihmeaine

Käytännössä tavoitteena on, että synteettisellä limalla voitaisiin jumittaa vihollisalusten potkurit ja ohjauslaitteet.

https://tekniikanmaailma.fi/usan-la...vlarin-ja-hamahakinseitin-kaltainen-ihmeaine/
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Periaatteessa kai ihan mahdollinen aine, jos merimiehet ovat huolissaan köysien tai kalaverkkojen sotkeutumisesta potkuriin.
 
Mielenkiintoista että suoraan sanottiin perustamisen johtuvan Venäjästä:
"Our National Defense Strategy makes clear that we're back in an era of great power competition as the security environment continues to grow more challenging and complex," said Richardson. "That's why today, we're standing up Second Fleet to address these changes, particularly in the north Atlantic."
...kun ei se venäläisten merivoima nyt kovin kummoisia askeleita eteenpäin kuitenkaan ole viime aikoina ottanut. Kaipa tuo itänaapurissa joidenkin egoa hivelee.
Ennen lakkauttamistahan 2. laivasto oli kai lähinnä logistinen organisaatio, varsinainen taisteluosasto oli lakkautettu jo vuosia aiemmin ja Atlantin puolustus siirtynyt 6. laivaston tehtäväksi.

Pidän muuten jossain määrin erikoisena että nykyään numeroituja laivastoja on 7 (joista tosin 10. laivasto on lähinnä elso/cyber-organisaatio), kun kylmän sodan aikana niitä oli neljä vaikka alusmäärä on pudonnut alle puoleen niistä ajoista.
 
This fascinating industrial film advertises Oceaneering International's groundbreaking Underwater Atmospheric Diving Suit (ADS), known as JIM. An atmospheric diving suit or ADS is a small one-person articulated submersible of anthropomorphic form which resembles a suit of armour, with elaborate pressure joints to allow articulation while maintaining an internal pressure of one atmosphere. The ADS can be used for very deep dives of up to 2,300 feet (700 m) for many hours, and eliminates the majority of physiological dangers associated with deep diving; the occupant need not decompress, there is no need for special gas mixtures, and there is no danger of decompression sickness or nitrogen narcosis.

Divers do not even need to be skilled swimmers. The first JIM suit was completed in November 1971 and underwent trials aboard HMS Reclaim in early 1972. In 1976, the JIM suit set a record for the longest working dive below 490 feet (150 m), lasting five hours and 59 minutes at a depth of 905 feet (276 m). The first JIM suits were constructed from cast magnesium for its high strength-to-weight ratio and weighed approximately 1,100 pounds (498.95 kg) in air including the diver. The suit had a positive buoyancy of 15 to 50 pounds (6.8 to 22.7 kg). Ballast was attached to the suit's front and could be jettisoned from within, allowing the operator to ascend to the surface at approximately 100 feet (30 m) per minute.

The suit also incorporated a communication link and a jettisonable umbilical connection. The JIM operator received air through an oral/nasal mask that attached to a lung-powered scrubber that had a life-support duration of approximately 72 hours, although actual survival for this time would have been unlikely due to thermal transfer through the magnesium body. As technology improved and operational knowledge grew, Oceaneering upgraded their fleet of JIMs. The magnesium construction was replaced with glass-reinforced plastic (GRP) and the single joints with segmented ones, each allowing seven degrees of motion, and when added together giving the operator a very great range of motion.

In addition, the four-port domed top of the suit was replaced by a transparent acrylic one that was taken from Wasp, this allowed the operator a much-improved field of vision. Trials were also carried out by the Ministry of Defence on a flying Jim suit powered from the surface through an umbilical cable. This resulted in a hybrid suit with the ability of working on the sea bed as well as mid water. Atmospheric diving suits in current use include the Newtsuit and the WASP, both of which are self-contained hard suits that incorporate propulsion units. The Newtsuit is constructed from cast aluminum (forged aluminum in a version constructed for the US Navy for submarine rescue), while the WASP is of glass-reinforced plastic (GRP) body tube construction. The upper hull is made from cast aluminum. The bottom dome is machined aluminum.
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One of the US Defense Department's top research agencies has been testing a new communication network that one researcher described as "basically fiber optic communications without the fiber."

In early 2017, the DoD awarded the Defense Advanced Research Projects Agency (DARPA) $45 million to develop a system of sensors and hardware that would enable soldiers to communicate even if the enemy jams the radio waves - something that China and Russia have been testing in recent years, Business Insider noted.

Marines at Camp Hansen on the Japanese island of Okinawa tested the Tactical Line-of-sight Optical communications Network (TALON) on August 21, which "transfers data on a highly secured and nearly undetectable infrared laser, separate from the radio frequency spectrum," a Marine Corps release said.

"We came out to Okinawa because it was one of the harshest humid environments, with highly variable weather on very short time scales," Dr. Linda Thomas, a senior research engineer with the US Naval Research Laboratory, told DVIDS Thursday. "It can go from being nice and sunny to torrential downpours. We are looking at how the system operates and handles these conditions and how we can better fulfill the needs of the future Marine Corps."

The system, which resembles a comically large surveyor's tripod, sends a confined beam of light from a transmitter to a receiver it can "see" directly. Lining up the two devices can be difficult, since unlike a radio, the TALON doesn't broadcast in all directions - but that's also the point, since it makes it much harder to detect and thwart, Breaking Defense noted.

While civilian versions of the technology, which has existed since the 1960s, have a range of about five miles, the DoD has been cagey about giving precise ranges for the TALON system. However, the Okinawa test reportedly reached similar ranges to those of soldiers' radios, which are around 45 miles.

Aside from disruption, which Russian forces demonstrated their ability to do in war games near the Estonian border in 2017, another danger of using radio in combat is that such signals can be followed back to their sources, which then become targets for airstrikes or artillery bombardments, Breaking Defense noted.

"There are adversaries out there with the capability to deny, degrade and disrupt our capabilities," Capt. Kyle Terza from US Army Space and Missile Defense Command said, according to an Army release June 27. "The threat is out there and... we have to be trained and ready to operate without [radio]."
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http://www.spacedaily.com/reports/U...ication_system_to_beat_radio_jammers_999.html

Miten tämä kapeasäde teknologia voi toimia horisontin yli?
 
The US Navy on Friday marked the official resurrection of a disbanded, Cold War-era fleet that was scrapped in 2011 and is returning amid heightened tensions with Russia.

In May, the Navy announced it was bringing back the 2nd Fleet, which played a key role during the Cold War years with operations in the North Atlantic and supporting US naval forces in the Mediterranean.

The fleet, first stood up in 1950, was scrapped for cost-saving reasons during a time of reduced tensions with Moscow.

It played a key role during the 1962 Cuban Missile Crisis, when its ships set a blockade to stop Soviet ships reaching the island.

The fleet will be responsible for US naval forces along the US East Coast as well as the North Atlantic region.

"This is the United States' and the US Navy's dynamic response to a dynamic security environment," Chief of Naval Operations Admiral John Richardson, said at a ceremony aboard the USS George H.W. Bush.

"The 2nd Fleet will be our spearhead... for the Atlantic, maintaining America's maritime superiority that will lead to maintaining our security, our influence and our prosperity around the world."

The national defense strategy of President Donald Trump's administration names China and Russia as America's biggest threats and points to their increasing assertiveness and drive for new weapons such as hypersonic missiles and advanced torpedoes.

Russian planes and ships have in recent months made multiple incursions in the North Atlantic close to the airspace and territorial waters of US NATO allies, including Britain.

NATO naval officials late last year also reported Russian submarines probing underseas data cables in the North Atlantic.

Separately, the US military also marked the official activation of a new command to innovate and prepare to counter new types of weapons being developed by Russia and China.

The Army Futures Command is headquartered in Austin, Texas and will be headed by a four-star general, with a staff of about 500 civilian and military personnel.
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http://www.spacewar.com/reports/US_Navy_marks_return_of_Cold_War-era_fleet_999.html
 
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