Submarines: Breathing Underwater Essay examples

There were several reasons allowing the British to reduce the U-boat peril, each of varying significance, and these are outlined below. In the early years of the war, escort ships were unable to give adequate warnings of a U-boat's presence. The only means of detecting a U-boat, other than the human eye, that the escorts possessed was ASDIC, which located the U-boat by bouncing sound waves off its hull. This was only useful when the U-boat was under the water and as generally, U-boats only submerged to attack, by the time ASDIC detected a U-boat the convoy was already in danger.

This separation presented communication and data-sharing challenges. Furthermore, the new design contained a number of technical risks, one of them was designing a submarine that would operate in a manner and environment very different from what Kockums was accustomed to. The risk resulted fuel system has been proven to be problematic. Swedish submarines have short patrols in calm, relatively fresh water. When a similar design was used in the salty, open water in which Australian submarines operate, water was sucked into the engine causing failure. Moreover, the RAN submarines transit greater distance and are on station for months at time, which has number of implications for fuel storage, hotel service, and other hull design features. The difference in operation concept and environment ultimately led to some equipment and system decision during design that caused problems with operations and supportability.

The Germans had sent out U-boats because they simply could no longer afford a purely defensive naval strategy. The Germans were the first to use torpedoes in battle to make their U-boats even more deadly. A torpedo is self-propelled underwater missile launched from a tube located on the deck or inside the hull of a warship. Torpedo tubes were first built into submarines in 1885 by the Swedish armaments manufacturer, Thortsen Nordenfelt. Torpedoes in 1914 carried a contact-triggered explosive warhead and had a range of 10,000 meters and could travel at 41 knots.1 However, their ideal range was about a kilometer because they tended to be inaccurate over longer distances.

They soon discovered the submarines bow planes were buried; the bow tanks full of sand. The propellers were torn off, steering gear ruined, stern tanks flooded, and all the hatches were desperately jammed.

Not only did we have ships, but we had a device called the Turtle. Invented nearly 150 years before, it was not until the Revolutionary War that the submarine would be used in combat. A man named David Bushnell would develop the Turtle to deploy underwater mines. The Turtle would fail all of its missions and would be lost at the Battle of Fort Lee when the ship transporting it would be sunk. “Despite the failures of the Turtle, General George Washington gave Bushnell a commission as an Army engineer…After the war, he became commander of the U.S. Army Corps of Engineers.”(History 1).

The U-boats one of Germany’s of most intimidating naval weapons. The U-boat, also known as a submarine, which is a boat that could go underwater. The common U-boat during World War One could carry 35 men and 12 torpedoes (history.com). The Germans would use the element of surprise by torpedoing ships such as their enemies or neutral countries.For example, the ship the Lusitania, a british ocean liner that had been coming from New York to Liverpool had been torpedoed without warning, which ended up killing 1,189 people. The Germans would use the U-boat for unrestricted warfare which caused the Germans’ to have one of the most

Hunley. It was built with the intention of “attacking Union ships that were blockading Confederate seaports”. It was equipped with a long pole containing an explosive charge; this “spar torpedo” was used to place an explosive on an enemy vessel and detonate it. There was no air supply in the Hunley with the exception of the main compartment. The Hunley was the first submarine to successfully sink another ship. It was responsible for sinking the USS Housatonic, but after signaling its success, the Hunley itself sank. Overall, the Hunley suffered three tragedies. The first crew drowned on August 29th, 1864 followed by and the second crew on October 15th later that year. Inventor Horace Hunley himself was one of the many casualties of the CSS

Submarines, also known as U-boats. This U-boat was able to attack ships underwater without being spotted. The only Major problem is that it broke the International law. When the Germans attack a neutral ship, they are supposed to warn them beforehand but

Before World War II, the submarine was very predictable and easily managed with detection systems, depth detection, and antisubmarine forces. The aircrafts were harder to manage, and could easily penetrate enemy territory. It was not so predictable.[xii]

American skipper, Tyrrell Jacobs of the Sargo, who had served at the Bureau of Ordnance, was one of the first to realize the Mark 14 torpedo was disastrously flawed. The Mark 14 was believed to be, by everyone except the sailors who used them, the greatest torpedo of its time. Unfortunately, this was not true. The torpedo’s definciency haunted the Silent Service for years before its failures were addressed. The torpedo was found to run deeper, in most cases more than ten feet, than its intended depth, fail to detonate, or to detonate too early. In the early years of the war there were also crippling torpedo shortages. The subs also had insufficient engines. The HOR engine’s gear-wheel teeth constantly broke causing vibrations that would knock out the motor. At this point in history America had little experience in submarine warfare. This left the submariners insufficiently trained and

I examine how rising or falling tide can affect the water level of Corte Madera Salt Marsh in this report. The data is from Wednesday (June 19th) and Thursday (June 20th). My hypothesis is that tide and water level have positive relationship. From the result, I learn that the water level and tide have positive relationship. However, when tide changes its direction, the water level is likely to stay or little change.

U-boats were military submarines used by Germany in the war as a weapon. When the German Chancellor Bethmann Hollweg proclaimed Germany’s purpose to use unrestricted submarine warfare, his one main concern was that it would aggravate an American response – in this he was to be precise. By 1917, the war was not going okay for Germany on the Western Front. Unrestricted submarine warfare was an outcome of anxiety and the belief that the fierceness of such a tactic might just keep America out of the war if the outcomes were remarkable and outrageous enough.

A submarine that may be unfamiliar to you was called the Pioneer. It was later renamed the H.L Hunley. The most well known submarine during the American Civil War. This submarine belonged to the Confederate States of America. It played a small part in the American Civil War. The Hunley, nearly 4 high and 15ft wide ,was built in Mobile, Alabama and launched in July 1863. The Hunley sank the USS Housatonic on February 1864. The Pioneer or shall I say the H.L Hunley became the first ship ever to sink an enemy vessel during a war, but sadly the submarine itself sank along with all of the crew members. No survivors. What they did is they drilled a hole in the enemy vessel and put the dynamite into that hole and ignited the dynamite to blow a

The Collins Class submarine was prone to excessive noise signatures whilst travelling at speed and lacked the operational capability to enter conflict situations due to the

Submarines were effective and best known for sneaking on the enemy. They were lightly armored and served as easy prey if discovered. It also had small crew numbers which made it hard to take prisoners from captured steamships. Despite these reasons, the Germans were non reluctant to break the international rules of warfare. The Germans attacked and sank the British passenger ship carrying American civilians on board. The American people were in disbelief and accused Germany of violating international rules. However Germany disagreed to the accusations.