submarine assignment expert

How it works
Homework answers

Answer to Question #213224 in HTML/JavaScript Web Application for jayanth

totalTorpedos, torpedosFired as inputs, write a super class Submarine with property and methods as below,PropertyDescriptionisSubmergedIt should contain a boolean value to indicate whether the submarine is submerged or not.

MethodDescriptiondiveWhen this method is called, it should set the value of isSubmerged to true and log "Submarine Submerged" text in the console.surfaceWhen this method is called, it should set the value of isSubmerged to false and log "Submarine Surfaced" text in the console.

Add a sub class weaponUnit which extends to Submarine with the below properties and methods,

The sequence of operations is,

Sample Input 1

Sample Output 1

Submarine Submerged

2 Torpedos Fired, 3 Left

Submarine Surfaced

Sample Input 2

Sample Output 2

2 Torpedos Fired, 8 Left

Need a fast expert's response?

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS !

Ask your question, related questions.

Who Can Help Me with My Assignment

There are three certainties in this world: Death, Taxes and Homework Assignments. No matter where you study, and no matter…

How to Finish Assignments When You Can’t

Crunch time is coming, deadlines need to be met, essays need to be submitted, and tests should be studied for.…

$Math Exams Study$

How to Effectively Study for a Math Test

Numbers and figures are an essential part of our world, necessary for almost everything we do every day. As important…

Official websites use .mil

Secure .mil websites use HTTPS

Meet the USS Montana: The U.S. Navy's Most Advanced Sub Ever?

These latest submarines continue to inform the Navy’s expanded mission envelope for attack submarines, given their increased ability to conduct undersea reconnaissance.

Here’s What You Need to Remember: The U.S. Navy has now launched the USS Montana , its final Block III Virginia-class attack submarine, a much-anticipated development intended to bring new levels of undersea warfare technology and mission possibilities to the Navy. The new boat set sail from Huntington Ingalls shipyard in Newport News, Va., on March 3.

The Virginia Block III boats incorporate a handful of next-generation innovations to include a more capable, technically advanced Large Aperture Bow sonar array bringing new undersea surveillance and reconnaissance options to submarine commanders as well as “Lock Out Trunk” configuration to improve Special Operations forces mission transport. A Lock Out Trunk, which could be described as a specially engineered compartment enabling Navy SEALs to exit the boat for clandestine missions without the submarine needing to surface. Mine-detection, covert attacks and rescue missions as well as undersea scout missions are all safer and less detectable with Block III.

“The USS Montana can attack targets ashore with highly accurate Tomahawk cruise missiles. It can conduct covert long-term surveillance of the land, the littorals and the sea. It elevates our anti-submarine and anti-ship power. It gives us an edge in mine delivery and detection. It extends the global reach of our special forces,” former Acting Undersecretary of the Navy, Gregory J. Slavonic, said in a Navy report at the USS Montana christening last Fall.

Alongside these innovations, Block III boats also incorporate a cutting-edge “fly-by-wire” computerized navigational system. What this does is draw upon computer automation to set the speed and depth of the submarine while human decisionmakers remain in a command and control capacity. This kind of “joystick” operated system brings submarine technology beyond hydraulic systems and even opens the door to the prospect of various applications of AI. For example, perhaps the submarine can launch mini undersea, mine-hunting drones from its missile tubes and instantly gather, organize and analyze incoming sonar signals to transmit precisely configured, timely data to submarine commanders. Incoming return signals can, using AI, be bounced instantly against an existing database of compiled information such as threat libraries, mine-configurations or even surface ship maneuvers to locate enemy positions. Threat signatures that might take longer to find and identify can be cataloged and transmitted on an exponentially faster timeframe, helping attack submarines stay in front of an adversary ’s decision cycle. The boats are also built with a fiber optic periscope cable enabling commanders to view their surroundings from anywhere within the submarine, as opposed to just beneath the top of the boat on a periscope.

AI has even progressed to the point wherein incoming threat scenario data can instantly be compared against specific, cataloged counterattack or defensive responses to help optimize decision-making for human commanders. Perhaps one threat scenario might require an immediate torpedo launch, whereas another might need to inform surface ships of approaching enemy boats and a third response may simply be to change course or surface. Advanced computer databases, enabled by AI-empowered computer algorithms able to perform analytics in seconds, can find, compare and analyze which prior responses best addressed the threat circumstance and make informed calculations regarding which weapon, counterattack or responsive course of action might best be suited for a given situation. These are the kinds of emerging technical capabilities now likely being introduced to submarine computer systems, the kinds of innovations now better enabled by Block III Virginia-class boats.

Block III is also continuing to inform the Navy’s expanded mission envelope for attack submarines, given their increased ability to conduct undersea reconnaissance. For example, newer Virginia-class submarine variants could patrol coastal areas searching for enemy mines with forward operating Unmanned Undersea Vessels (UUVs) able to identify threats. This increases an ability to conduct clandestine surveillance missions and enables operations in areas less accessible to deeper drafts and potentially more vulnerable surface ships.

Part of the reason Virginia-class Block III submarines bring a new ability for undersea reconnaissance is due to a series of innovations pioneered several years ago on a testbed prototype submarine called the USS South Dakota . The USS South Dakota is now deployed and some of its new innovations are operational, a development introducing new performance technologies. While the specifics of these systems are not discussed by Navy developers for obvious security reasons, senior submarine developers with the service explain they contain a new generation of quieting technologies, something which naturally improves an ability to operate without detection.

The pace of arrival of Virginia-class submarines is also of great significance to the Navy, given that the service has for many years now been working with Congress to substantially uptick Virginia-class submarine production to help mitigate an expected submarine fleet deficit in coming years. Following extensive work with Congress to secure additional funding for the highly prioritized undersea warfare fleet, the Navy conducted several industrial base assessments and was able to determine that the capacity exists to build up to three per year starting in 2025. The pace at which Los Angeles class submarines are retiring, not to mention a growing and increasingly concerning Chinese submarine force, has inspired the Navy to uptick the production rate of its submarines and sustain accelerated development even as the new Columbia-class submarines begin to come online.

Interestingly, some of the Block III innovations are being built into the emerging fleet of nuclear-armed ballistic missile submarines called the Columbia class. The Columbia, believed to potentially become the stealthiest submarine ever to exist, will incorporate the fiber optic periscope as well as fly-by-wire computerized navigation, among other things.

As for what’s next, a statement from one of the major Virginia-class submarine builders, Huntington Ingalls, quotes Jason Ward, Newport News’ vice president of Virginia-class submarine construction saying, “we look forward to executing our waterborne test program, and working toward sea trials and delivering the submarine to the Navy later this year.”

Finally, all of this paves the way toward Virginia-class Block IV, Block V and Block VI boats, not to mention a next-generation class of attack submarines now in the conceptual phase. Block V, well known for its Virginia Payload Modules, will bring a massive amount of new firepower by bringing the submarine’s Tomahawk-firing capacity from 12 up to 40.

Kris Osborn is the defense editor for the National Interest. Osborn previously served at the Pentagon as a Highly Qualified Expert with the Office of the Assistant Secretary of the Army—Acquisition, Logistics & Technology. Osborn has also worked as an anchor and on-air military specialist at national TV networks. He has appeared as a guest military expert on Fox News, MSNBC, The Military Channel, and The History Channel. He also has a Masters Degree in Comparative Literature from Columbia University.

https://www.reutersconnect.com/all?id=tag%3Areuters.com%2C2014%3Anewsml_TM3EAAP0XIC01&share=true

USS Montana: Meet the U.S. Navy's Latest Stealth Submarine

Give this article Give this article Give this article

Supported by

A Babysitter and a Band-Aid Wrapper: Inside the Submarine Spy Case

Jonathan and Diana Toebbe seemed like an ordinary suburban couple, but the F.B.I. said they were would-be spies — and sloppy ones.

Send any friend a story

As a subscriber, you have 10 gift articles to give each month. Anyone can read what you share.

The residence of Jonathan and Diana Toebbe in Annapolis, Md. They are accused of attempting to sell some of America’s most closely guarded submarine propulsion secrets to a foreign government.

By Julian E. Barnes , Brenda Wintrode and JoAnna Daemmrich

WASHINGTON — On July 28, Diana Toebbe posted a Facebook message looking for a babysitter to take care of her children early on the coming Saturday morning for five to six hours.

Later the post, visible only to friends, was updated with the word “*FOUND*.” And on that Saturday, Ms. Toebbe accompanied her husband, Jonathan, to south-central Pennsylvania.

Unbeknown to Ms. Toebbe, she and her husband were being watched by the F.B.I. as they left their home in Annapolis, Md. And the bureau’s agents continued to watch in Pennsylvania as Jonathan Toebbe removed from his shorts pocket a 32-gigabyte memory card hidden in a sealed Band-Aid wrapper, which he then, according to court papers , placed in a container set up by an undercover F.B.I. operative.

The Toebbes, accused by the U.S. government of trying to sell some of America’s most closely guarded submarine propulsion secrets to a foreign government, are scheduled to appear in federal court in West Virginia on Tuesday. They will face charges related to violating the Atomic Energy Act’s prohibition on sharing nuclear know-how.

For now, the big questions surrounding the couple — what country they are accused of trying to sell the nuclear secrets to, and what motivated them to take the risk — remain unanswered.

Mr. Toebbe was described by acquaintances as a diligent and organized grad student in nuclear physics who was commissioned in the Navy as an officer and expert in submarine propulsion. He continued as a civilian in the Navy after finishing his military service, considered by some a plum assignment for the most talented nuclear physicists.

Ms. Toebbe was a 10-year veteran of the Key School, a progressive private school in Annapolis, where she taught history and English. There, according to parents, she was prone to talking about her Ph.D. in anthropology from Emory University and her love of knitting. She was a respected adviser, both formally and informally, at the school.

“You could just tell she was insanely smart,” said Craig Martien, 20, a 2019 graduate of Key School who worked closely with Ms. Toebbe on the yearbook and an after-school anthropology club. “She was very friendly and down-to-earth, and I got along with her very well.”

When Mr. Martien went off to Williams College, he brought along a toy squid that Ms. Toebbe had knitted. Like other Key graduates, Mr. Martien described her as a strong feminist and very liberal.

She was taken aback by President Donald J. Trump’s 2016 election, he said, and mentioned several times that she was considering moving to Australia.

More on U.S. Armed Forces

“She said she couldn’t stand the current state of politics and actually had found some job opportunities over there,” he said.

On social media platforms, Ms. Toebbe shared photographs of her dogs, her children, meals cooking on the stove, a family vacation and selfies — ordinary scenes of an ordinary life, one far different than the amateur cloak-and-dagger act portrayed in the F.B.I. affidavit.

Having made contact with the as-yet undisclosed other country about providing submarine secrets , the Toebbes were reluctant to expose themselves in an in-person meeting, according to the narrative laid out in court documents by the F.B.I. But their apparent desire for cryptocurrency payments led them to agree to the undercover operative’s demand they deposit information in a dead drop location — a decision that ultimately exposed their identity to the F.B.I.

Evidence in the court documents suggests the foreign country the Toebbes allegedly tried to sell the information to was an ally, or at least something of a partner, since it cooperated with the F.B.I. as the sting operation unfolded. While some experts speculated France could have been the target, French officials said they were not involved in the incident.

The hearing on Tuesday will be short. So far as the government knows, neither Jonathan nor Diana Toebbe has a lawyer. Prosecutors asked the court on Monday to hold Mr. Toebbe rather than granting him bail, saying he could face life in prison and was a flight threat. The magistrate judge could also set a hearing date for the couple’s continued detention.

Public records searches turned up no signs of financial distress that could provide a motivation for them to try to sell American secrets.

Yet the F.B.I. affidavit portrayed the couple as willing to take risks for the promise of payments in a cryptocurrency called Monero.

In February, F.B.I. agents, posing as a representative of the foreign country, proposed an in-person meeting. The response, which was signed “Alice,” a common placeholder name in military cryptography, wrote that “face to face meetings are very risky for me, as I am sure you understand,” according to the affidavit. The writer then proposed passing information electronically in exchange for $100,000 in the cryptocurrency.

“Please remember I am risking my life for your benefit and I have taken the first step. Please help me trust you fully,” the note to the undercover F.B.I. agents read.

The F.B.I. agents then pressed for a neutral drop location. The response came a few days later: “I am concerned that using a dead drop location your friend prepares makes me very vulnerable,” the note from “Alice” said, according to the affidavit. “If other interested parties are observing the location, I will be unable to detect them. I am not a professional, and do not have a team supporting me.”

The note went on to propose that the writer would choose a drop location for the encrypted files. The F.B.I. agents responded that they would give first $10,000 then $20,000 in cryptocurrency at a drop location of their choosing.

“I am sorry to be so stubborn and untrusting, but I cannot agree to go to a location of your choosing,” the response from “Alice” said. “I must consider the possibility that I am communicating with an adversary who has intercepted my first message and is attempting to expose me.”

The writer next proposed that the country provide reassurance by sending a signal from its complex in Washington over Memorial Day weekend.

Writing from an encrypted Proton mail account, “Alice” said the signal had been received, and agreed to drop the material at the location chosen by the undercover operative — a mistake in tradecraft, some experts said.

“It was somewhat surprising that someone who has studied submarine warfare follows the F.B.I.’s direction to surface for these supposedly clandestine drop offs,” said Michael Atkinson, a former inspector general for the intelligence community.

The willingness on the part of the country to convey the unspecified signal suggests its cooperation with the United States throughout the investigation. Mr. Atkinson said it was very unusual for a foreign country to allow its embassy or other facility to be used to send a signal to a suspect being pursued by the F.B.I.

Mr. Atkinson, now a partner at the law firm Crowell & Moring, said a similar false flag operation by the F.B.I. involving a government scientist trying to sell secrets to an ally resulted in a prison sentence of 13 years after a plea bargain.

At the Key School, where Ms. Toebbe taught, and in their Annapolis neighborhood, colleagues, students and neighbors tried to process the arrest of the couple and the accusations against them.

Luke Koerschner, 20, a 2019 Key School graduate now at Michigan State University, was in Ms. Toebbe’s advisory group for four years. He described her as “very friendly and welcoming,” an outgoing teacher who loved to cheer on her students in the school’s cornhole tournaments.

Matthew Nespole, the head of the Key School, said he was “shocked and appalled” to learn of the charges against the Toebbes and that the school “supports the administration of justice by the F.B.I. and NCIS, and will cooperate with the investigation.” The Key School placed Ms. Toebbe on leave indefinitely.

Julian E. Barnes reported from Washington, and Brenda Wintrode and JoAnna Daemmrich from Annapolis, Md. Kitty Bennett contributed research. David E. Sanger contributed reporting from Washington.

Introduction to Submarine Design

Submarines are underwater self-propelled crafts that are designed and built to perform underwater operations for a stipulated amount of time. The submarine design consists of a single or double-hull system that houses all the necessary systems and manpower required for completion of their mission.

This, though, is a very simple description of a very complex engineering product, which are used for a wide range of purposes such as underwater research, underwater rescue, and submarine warfare; the last one being the most widely used.

In this series of articles, we will study the design of naval submarines. In the first few articles of this series, we will not go into the design process, rather, we will familiarise ourselves with the design and functionalities of a submarine, its parts, general arrangement, structural design and arrangement, the stability of a submarine, the systems used in a submarine, etc.

Once we have looked into these, it would be easy for us to touch on the submarine design process. Though the design process followed by all navies is confidential and different from each other, the basics still remain the same.

The primary submarine design objectives are:

Parts of a Submarine

Outer Hull and Pressure Hull:

Most designs of submarines have two hulls. The hull that houses all the accommodation spaces, weapons, weapon control systems, communications and control room, battery banks, main and auxiliary machinery, is the pressure hull. It is called the pressure hull because it is designed to withstand the hydrostatic pressure at the maximum operable depth of the submarine.

The pressure hull is housed inside the outer hull, which is not pressure tight. Why? Because, in submerged condition, the spaces between the outer and the inner hull always remain flooded with seawater. Hence, the hydrostatic pressure on the outer hull is negligible.

Main Ballast Tanks (MBTs):

Now, the “floodable” spaces are compartmentalised into tanks, which in submarine terminology, are called Main Ballast Tanks. The distribution of main ballast tanks in a submarine depends on the shape and interaction of the outer and pressure hull.

We will understand the working of MBTs after we deal with the process of submerging a submarine, and submarine stability. Some designs have MBTs only at the forward and aft regions, and the rest of the pressure hull is flushed with the outer hull.

Other designs have completely different outer and pressure hull, with space for ballast between them. Some arrangements of MBTs are shown in the figures below.

Sail or Bridge Fin:

The sail is the streamlined shaped non-pressure resistant part of the submarine over the outer hull. Its different types of masts that are deployed from within the submarine when snorkels or sails just under the free surface.

The different masts used in a submarine are periscope mast, communications mast, radar mast, weapon sensor mast, etc. These are raised from the bridge fin when the submarine requires surface monitoring in stealth mode. Figure 7 shows the sail in a submarine when the masts are not deployed.

The profile of the bridge fin in a submarine design is always an aerofoil shape, as it acts as a hydrofoil with the submarine sails with just the fin above water. This shape reduces the drag on the submarine. It is very important to keep the drag within limits as it prevents eddies and subsequently, minimises the acoustic signature of the submarine.

Control Surfaces:

When the submarine is in submerged condition, changes in direction and depth is carried out by use of hydroplanes that act as control surfaces. To understand the application of hydroplanes, we first need to know the nature of motions experienced by a submarine in submerged condition.

Unlike a surface ship, submarines are subjected to lesser heave and pitch motions due to the absence of surface wave effects. A pair of hydroplanes or fins at the forward and aft are used to control the heave and pitch independently. The hydroplanes or fins are shown in Figure 8.

Two hydroplanes mounted at the aft in the vertical plane are used to change the lateral direction of the submarine when in motion. These are basically called rudders. Do note that unlike ships, the rudders of a submarine are forward of the propeller.

Why? Because in case of a ship, the rudder requires the propeller outflow for maximum lift efficiency. But in a submarine, since the entire hull is submerged, undisturbed streamlined flow is incident onto the rudder surface.

If the submarine rudder were placed aft of the propeller, the flow onto the rudder would be more turbulent, increasing the probability of cavitation.

One important thing to note is, hydroplanes operate at optimum efficiency only at high speeds.

General Arrangement of a Submarine

Before moving onto knowing the operation and functions of the different systems on a submarine, it is vital to know the spatial distribution of the main compartments and systems along the length and breadth of the hull. This will be best understood when referred to Figure 9.

The pressure hull and outer hull are clearly distinguishable in the above figure of the submarine design. The forward part of the pressure hull houses the weapon systems and sensors. The sensors are usually housed in the flooded space between the forward of the pressure hull and the outer hull.

Sensors are always placed at the forward for reduction of noise from turbulent flow at the aft and obstruction of machinery in case of aftward position. The weapon system includes the torpedo tubes which house the torpedoes, torpedo launching system, and torpedo operating tanks.

The forward-most part of the pressure hull is used to store the weapons. They are loaded into the torpedo tubes which are located partially within in the pressure hull and extends up to the forward most periphery of the outer hull.

The midship portion of the pressure hull is used for the following purposes:

Hullform of a Submarine Design:

The most initial submarines used a hull form which was much different from those used in modern-day submarines. The evolution of hull form and the reasons behind it is hence an interesting aspect of submarine design. The most ideal shape of a submarine hull for minimum drag is the ideal streamlined shape with a parabolic bow and an elliptical stern, as shown in Figure 10.

The first submarines in the 1940s used this shape for minimum power requirement and negligible flow separation around the hull. But it was observed that due to the streamline shape, the usable volume within the hull was insufficient, as the radius of the hull saw a steep decrease from just aft and forward of the midship region. This not only kept the production costs high but also weakened the possibility of incorporating multiple deck levels.

submarine hullform with cylindrical mid body

The hull form used in modern submarines (since the late 1970s) is the long cylindrical mid-body with elliptical bow and stern.

Though a shift from the ideal streamlined shape increases the drag and subsequent power requirements, the additional fuel costs over the lifetime of the submarine are offset by the low production costs, since cylindrical sections are much cheaper and easier to construct. This shape also enables the incorporation of multiple decks within the same hull volume, hence ensures more spatial use.

It is important to know that the shape and geometry of a submarine hull is an important starting point of the design since it would not only dictate the aforementioned point but also affect a range of other factors of the submarine as discussed below.

A cylindrical hull form increases the manoeuvrability of the submarine due to larger hydrodynamic forces generated by hydroplane action. It has also been observed that the minimum overall drag on the hull and best manoeuvrability characteristics are obtained for Length to Breadth ratios ranging from 6 to 8.

The diameter of the submarine is decided primarily based on the length. And the length is fixed based on the required pressure hull volume and displacement of the submarine. Multiple decks increase the usability of pressure hull volume, and the number of possible deck levels in a submarine is decided primarily by its diameter.

A submarine with one deck would have two levels within its pressure hull. Submarines with hull diameters ranging from 4 to 7 meters are restricted to one deck. It would allow two accessible levels – below deck level and above deck level, as shown in the figure below.

Twin decks with three accessible levels are possible in submarines with hull diameter ranging from 7 to 8 meters. Large-sized diesel-electric submarines are usually of this dimension.

Triple decks and dour deck designs are used for hull diameters ranging from 9 to 11 meters and 11 to 13 meters. Such large diameters are used mostly in nuclear-powered submarines where large vertical space is required for the nuclear power plant.

With the aspects of submarine design discussed in this article, the moot point to be extracted is that having known the parts and functions of the submarine and its systems, the art and skill of a good designer lies in trying to achieve maximum volumetric efficiency for a design.

There are some spaces within the submarine with may be highly volume-specific (for example, main ballast tanks), whereas some may have only a few specific dimensions (example, battery bank). There would also be cases where there are specific volumetric demands, but not shape specific (for example torpedo operating tanks and main ballast tanks). Depending on such demands, a good designer would prioritize the stages of design and the parameters that are fixed at each stage.

One of the most vital aspects of submarine design is its stability. Though it may seem simple as compared to ships, the understanding of submarine stability is more complex than that of a ship, as it would operate in both, surfaced and submerged conditions.

And the stability parameters of a submarine change drastically the moment a submarine dives into the water or resurfaces, which gives rise to a point where the submarine is at the tipping point of floundering. How and why is what we will discuss in the next article.

Disclaimer: The authors’ views expressed in this article do not necessarily reflect the views of Marine Insight. Data and charts, if used, in the article have been sourced from available information and have not been authenticated by any statutory authority. The author and Marine Insight do not claim it to be accurate nor accept any responsibility for the same. The views constitute only the opinions and do not constitute any guidelines or recommendation on any course of action to be followed by the reader.

The article or images cannot be reproduced, copied, shared or used in any form without the permission of the author and Marine Insight.

Choosing A Hull Form For Ships : A Naval Architect’s Perspective

Understanding Water Jet Propulsion – Working Principle, Design And Advantages

What Do You Understand By Prow Of A Ship?

Effects Of Ice Accretion On Ship Stability

Ship Construction: Plate Machining, Assembly of Hull Units And Block Erection

What is Bollard Pull – Everything You Wanted To Know

18 comments.

Moderating vessel supply growth over the next few years together with a mild improvement in the outlook for seaborne trade will enable a reduction on chronic overcapacity and so mark a recovery in the dry bulk shipping market, according to the latest edition of the Dry Bulk Forecaster, published by global shipping consultancy Drewry. Moderating vessel supply growth over the next few years together with a mild improvement in the outlook for seaborne trade will enable a reduction on chronic overcapacity and so mark a recovery in the dry bulk shipping market, according to the latest edition of the Dry Bulk Forecaster, published by global shipping consultancy Drewry.

i interest in this field like part of submarine/ship

The articles on submarine design are interesting and I would like to read some more. I am a lecturer at the maritime college Fremantle Western Australia

Hello, Wat are the normal weaponry in military submarine. Any provision for underwater radar surveillance? Medjor Anthon

We do not have the expertise in the submarine/defense sector.

You forgot to address one key element of your submarine design description. How will the aforementioned decks silently accommodate the expansion and contraction of the hull as the submarine changes depths (and what does this mean for equipment placement)?

How much positive buoyancy is typically built into a submarine’s design? Say it has a mass of 2000T what would it’s max buoyancy be fuelled, equipped for service but with all ballast blown?

This website has helped me learn about submarines so much thank you 😉 <3

@Donald: Glad the content is useful to you

Just watched ‘Hunter Killer ‘ and came here to know Submrine

How can I obtain permission to use information in this article as part of a university report?

@Jo: Please send us an email to [email protected] with your requirement.

i like it and i enjoy it because it is my fun task. i am thinking to become a submarine commander. bye

nice article.Even a layman like me could understand.Tq

@Sheeja: Glad the information provided is simple to understand ????????

A submarine driveshaft was made of epoxy and carbon fibers. Indicate two reasons why composites have unique and excellent properties for this application? Which type of composite is more suitable for this application? How this shaft will be manufactured? On close examination , the shaft was found to spin irregularly and to cause vibrations. Identify four possible causes of this problem and four possible solutions.

To whomever is interested in the field, I suggest the unsurpassed classic “Submarine Design” by Ulrich Gabler.

Your email address will not be published. Required fields are marked *

Navy Announces New Flag Assignments; Including New Undersea Warfare Director

BANGOR, Wash. (Jan. 25, 2019) Rear Adm. Douglas Perry, from Biloxi, Mississippi, receives honors from the sideboys as the official party arrives during a change of command ceremony for Submarine Group 9. US Navy Photo

The Navy on Friday unveiled a series of promotions and new assignments for flag officers, including a new undersea warfare requirements officer.

Rear Adm. Doug Perry, who has led Submarine Group Nine since January 2019, will head to the Pentagon as the new director of undersea warfare on the chief of naval operations’ staff (OPNAV N97). Perry was previously at U.S. Fleet Forces Command, where he was the joint and fleet operations director, according to his service bio.

The Pentagon last week disclosed that Rear Adm. William Houston, the current N97, is up for a promotion to vice admiral and to lead Naval Submarine Forces.

The service this week also tapped a new head of the Office of Naval Intelligence. Rear Adm. Ronald Copley, who has been the National Security Agency’s deputy director of operations, will serve as ONI’s new commander. He’ll also serve as the National Maritime Intelligence Integration Officer’s director.

Rear Adm. Doug Verissimo, who has been the commander of Carrier Strike Group 9 since June 2020, will head to the Pentagon to lead the assessment division of the chief of naval operations’ staff (OPNAV N81).

Rear Adm. William Byrne Jr., who has been the vice director on the Pentagon’s Joint Staff, will head over to the chief of naval operations’ staff to serve as its warfare development director (N72). According to his service bio, Byrne has previously led Carrier Strike Group 15 and U.S. Naval Forces Korea.

Below is the Navy’s full flag officer announcement from April 30:

Rear Adm. William D. Byrne Jr. will be assigned as director, warfare development, N72, Office of the Chief of Naval Operations, Washington, D.C. Byrne is currently serving as vice director, Joint Staff, Washington, D.C.

Rear Adm. Ronald C. Copley will be assigned as director, National Maritime Intelligence Integration Office; and commander, Office of Naval Intelligence, Washington, D.C. Copley is currently serving as deputy director of operations, National Security Agency, Fort Meade, Maryland.

Rear Adm. Douglas G. Perry will be assigned as director, Undersea Warfare Division, N97, Office of the Chief of Naval Operations, Washington, D.C. Perry is currently serving as commander, Submarine Group Nine, Silverdale, Washington.

Rear Adm. (lower half) Christopher C. French, selected for promotion to rear admiral, will be assigned as deputy judge advocate general of the Navy, Washington, D.C. French is currently serving as legal counsel to the Chairman of the Joint Chiefs of Staff, Washington, D.C.

Rear Adm. (lower half) George M. Wikoff, selected for promotion to rear admiral, will be assigned as vice director, Joint Staff, Washington, D.C. Wikoff is currently serving as special assistant to the deputy chief of naval operations for operations, plans and strategy, N3/N5, Office of the Chief of Naval Operations, Washington, D.C.

Rear Adm. (lower half) Craig C. Clapperton will be assigned as commander, Combined Joint Task Force, Cyber, U.S. Tenth Fleet, Fort Meade, Maryland. Clapperton is currently serving as commander, Carrier Strike Group Twelve, Norfolk, Virginia.

Rear Adm. (lower half) Douglas C. Verissimo will be assigned as director, Assessment Division, N81, Office of the Chief of Naval Operations, Washington, D.C. Verissimo is currently serving as commander, Carrier Strike Group Nine, San Diego, California.

Capt. Maria L. Aguayo, selected for promotion to rear admiral (lower half), will be assigned as commander, Naval Facilities Engineering Systems Command Atlantic, with additional duties as fleet civil engineer (N01CE), U.S. Fleet Forces Command, Norfolk, Virginia. Aguayo is currently serving as chief of staff, Naval Facilities Engineering Systems Command, Washington, D.C.

Capt. Erik J. Eslich, selected for promotion to rear admiral (lower half), will be assigned as deputy commander, Seventh Fleet, Yokosuka, Japan. Eslich is currently serving as executive assistant, U.S. Fleet Forces Command, Norfolk, Virginia.

Capt. Joseph B. Hornbuckle, selected for promotion to rear admiral (lower half), will be assigned as commander, Fleet Readiness Centers, Naval Air Systems Command, Patuxent River, Maryland. Hornbuckle is currently serving as chief of staff, Naval Air Warfare Center Aircraft Division, Patuxent River, Maryland.

Capt. Christopher A. Kijek, selected for promotion to rear admiral (lower half), will be assigned as director, operations and plans, N3, Office of the Chief of Naval Operations, Washington, D.C. Kijek is currently serving as executive assistant, U.S. Indo-Pacific Command, Camp H. M. Smith, Hawaii.

Capt. Stuart C. Satterwhite, selected for promotion to rear admiral (lower half), will be assigned as director, My Navy Career Center, Millington, Tennessee. Satterwhite is currently serving as deputy director, enterprise support, Office of the Chief of Naval Personnel, Arlington, Virginia.

Capt. Ralph R. Smith III, selected for promotion to rear admiral (lower half), will be assigned as vice director for intelligence, J-2, Joint Staff, Washington, D.C. Smith is currently serving as director, Maritime Operations Center, U.S. Tenth Fleet/U.S. Fleet Cyber Command, Fort Meade, Maryland.

IMAGES

Assignment Expert X
Career Overview
Defence submarine project stalled over unsigned agreement
Submarine inventor admits dismembering journo but denies murder
Nukes, Nubs And Coners: The Unique Social Hierarchy Aboard A Nuclear Submarine
Future Submarine

VIDEO

Russian submarine #shorts #short #submarine #russia
Submarine Warfare
Mix Word
HOW THE FIRST SUBMARINES WORKED😲😲 #shorts #submarine #military #navy
View from the top of the submarine
Iran launches large-scale drills in Sea of Oman

COMMENTS

MILPERSMAN 1306-402 QUALIFICATION FOR ASSIGNMENT TO S DUTY - Navy
Command (NAVPERSCOM), Nuclear Power/Submarine Assignment Branch (PERS-403). c. Rate/Rating (1) The following criteria are required for initial training or initial assignment to submarine duty: (a) Be in paygrade E-1 through E-6. Personnel in paygrade E-7 will be considered on a case basis by NAVPERSCOM (PERS-403).
Answer in Web Application for Sajid #223927 - Assignment Expert
Be sure that math assignments completed by our experts will be error-free and done according to your instructions specified in the submitted order form. Math Our experts will gladly share their knowledge and help you with programming projects. Keep up with the world’s newest programming trends. Programming
Answer in Web Application for jayanth #213224 - Assignment Expert
Add a sub class weaponUnit which extends to Submarine with the below properties and methods, The sequence of operations is, Submerge the Submarine Fire torpedos Surface the Submarine Sample Input 1 5 2 Sample Output 1 Submarine Submerged 2 Torpedos Fired, 3 Left Submarine Surfaced Sample Input 2 10 2 Sample Output 2 Submarine Submerged
Submarine Ratings - Navy
PERS-403. Enlisted Non-Nuclear Submarine Assignments. General Non-Nuclear Rating Announcements. Submarine Sailors coordinate with your detailer for possible assignment to Recruit Division Commander or Recruiting Duty. Ensure you are checking availability of assignments on My Navy Assignments during Application phase. Rating Specific Announcements.
Meet the USS Montana: The U.S. Navy's Most Advanced Sub Ever?
The pace of arrival of Virginia-class submarines is also of great significance to the Navy, given that the service has for many years now been working with Congress to substantially uptick...
Submarine Spy Case Involved a Babysitter and a Band-Aid ...
Mr. Toebbe was described by acquaintances as a diligent and organized grad student in nuclear physics who was commissioned in the Navy as an officer and expert in submarine propulsion. He...
15 Submarine Careers To Consider (Plus Duties and Salaries)
Hospital corpsman may receive station assignments on specific military vessels, such as submarines or helicopters, or at a base or field operation above ground. 3. Solderer National average salary: $41,860 per year Primary duties: A solderer builds, fixes or performs maintenance on metal equipment.
Introduction to Submarine Design - Marine Insight
Submarines are underwater self-propelled crafts that are designed and built to perform underwater operations for a stipulated amount of time. The submarine design consists of a single or double-hull system that houses all the necessary systems and manpower required for completion of their mission. This, though, is a very simple description of a ...
Navy Announces New Flag Assignments; Including New Undersea ...
The Navy on Friday unveiled a series of promotions and new assignments for flag officers, including a new undersea warfare requirements officer. Rear Adm. Doug Perry, who has led Submarine Group ...