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94-639: When the writing project was developed the parameters for this series were designed to cover only commissioned US Navy ships with assigned names. If the ship was not assigned a name it was not included in the histories written for the series. In addition to the ship entries, DANFS and the online links have been expanded to include appendices on small craft, histories of Confederate Navy ships, and various essays related to naval ships. Foreword and introduction passages for many editions were written by big names from naval command history from Arleigh Albert Burke to Elmo Russell Zumwalt, Jr. and others. DANFS

188-407: A harbour ; or defensively, to create "safe" zones protecting friendly sea lanes, harbours, and naval assets. Mines allow the minelaying force commander to concentrate warships or defensive assets in mine-free areas giving the adversary three choices: undertake a resource-intensive and time-consuming minesweeping effort, accept the casualties of challenging the minefield, or use the unmined waters where

282-595: A blast upon tipping. Several mine-laying ships were destroyed when their cargo exploded. Beginning around the start of the 20th century, submarine mines played a major role in the defense of U.S. harbours against enemy attacks as part of the Endicott and Taft Programs . The mines employed were controlled mines, anchored to the bottoms of the harbours, and detonated under control from large mine casemates onshore. During World War I , mines were used extensively to defend coasts, coastal shipping, ports and naval bases around

376-469: A combination of optical character recognition (OCR) and hand transcription. The NHHC is slowly updating its online DANFS to correct errors and take into account the gap in time between the print publication and the present date. NHHC prioritizes updates as follows: ships currently commissioned, ships commissioned after the original volume publication, ships decommissioned after original volume publication, and finally updates to older ships. The NHHC has begun

470-540: A formidable naval force, a Confederate Congress committee on August 27, 1862, reported: Before the war, nineteen steam war vessels had been built in the States forming the Confederacy, and the engines for all of these had been contracted for in those States. All the labor or materials requisite to complete and equip a war vessel could not be commanded at any one point of the Confederacy. [The Navy Department] had erected

564-401: A harbour by hand. They can be inexpensive: some variants can cost as little as US $ 2,000, though more sophisticated mines can cost millions of dollars, be equipped with several kinds of sensors, and deliver a warhead by rocket or torpedo . Their flexibility and cost-effectiveness make mines attractive to the less powerful belligerent in asymmetric warfare . The cost of producing and laying

658-915: A mine is usually between 0.5% and 10% of the cost of removing it, and it can take up to 200 times as long to clear a minefield as to lay it. Parts of some World War II naval minefields still exist because they are too extensive and expensive to clear. Some 1940s-era mines may remain dangerous for many years. Mines have been employed as offensive or defensive weapons in rivers, lakes, estuaries, seas, and oceans, but they can also be used as tools of psychological warfare . Offensive mines are placed in enemy waters, outside harbours, and across important shipping routes to sink both merchant and military vessels. Defensive minefields safeguard key stretches of coast from enemy ships and submarines, forcing them into more easily defended areas, or keeping them away from sensitive ones. Shipowners are reluctant to send their ships through known minefields. Port authorities may attempt to clear

752-524: A mined area, but those without effective minesweeping equipment may cease using the area. Transit of a mined area will be attempted only when strategic interests outweigh potential losses. The decision-makers' perception of the minefield is a critical factor. Minefields designed for psychological effect are usually placed on trade routes to stop ships from reaching an enemy nation. They are often spread thinly, to create an impression of minefields existing across large areas. A single mine inserted strategically on

846-495: A powder-mill which supplies all the powder required by our navy; two engine, boiler and machine shops, and five ordnance workshops. It has established eighteen yards for building war vessels, and a rope-walk, making all cordage from a rope-yarn to a 9-inch cable, and capable of turning out 8,000 yards per month .... Of vessels not ironclad and converted to war vessels, there were 44. The department has built and completed as war vessels, 12; partially constructed and destroyed to save from

940-636: A related project to place Ship History and Command Operations Reports online at their site. As the DANFS is a work of the U.S. government, its content is in the public domain, and the text is often quoted verbatim in other works. Many websites organized by former and active crew members of U.S. Navy vessels include a copy of their ships' DANFS entries. The Dictionary limits itself largely to basic descriptions and brief operational notes, and includes almost no analysis or historical context. Confederate States Navy The Confederate States Navy ( CSN )

1034-695: A safe distance. The submarine H. L. Hunley used one to sink USS  Housatonic on 17 February 1864. A Harvey torpedo was a type of floating mine towed alongside a ship and was briefly in service in the Royal Navy in the 1870s. Other "torpedoes" were attached to ships or propelled themselves. One such weapon called the Whitehead torpedo after its inventor, caused the word "torpedo" to apply to self-propelled underwater missiles as well as to static devices. These mobile devices were also known as "fish torpedoes". The American Civil War of 1861–1865 also saw

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1128-577: A shipping route can stop maritime movements for days while the entire area is swept. A mine's capability to sink ships makes it a credible threat, but minefields work more on the mind than on ships. International law , specifically the Eighth Hague Convention of 1907 , requires nations to declare when they mine an area, to make it easier for civil shipping to avoid the mines. The warnings do not have to be specific; for example, during World War II, Britain declared simply that it had mined

1222-722: A sloop mined by the Peruvians. A similar fate occurred with the gunboat schooner Covadonga in front of the port of Chancay , on 13 September 1880, which having captured and checked a beautiful boat, it exploded when hoisting it on its side. During the Battle of Tamsui (1884), in the Keelung Campaign of the Sino-French War , Chinese forces in Taiwan under Liu Mingchuan took measures to reinforce Tamsui against

1316-882: A time as the chairman of the Naval Affairs Committee of the United States Senate . The Confederacy had a few scattered naval assets and looked to Liverpool, England, to buy naval cruisers to attack the American merchant fleet. In April 1861, Mallory recruited former U.S. Navy Lieutenant James Dunwoody Bulloch into the Confederate navy and sent him to Liverpool. Using Charleston-based importer and exporter Fraser Trentholm, who had offices in Liverpool, Commander Bulloch immediately ordered six steam vessels. As Mallory began aggressively building up

1410-625: A time when the Chilean squadron was blockading the Peruvian ports, formed a brigade of torpedo boats under the command of the frigate captain Leopoldo Sánchez Calderón and the Peruvian engineer Manuel Cuadros , who perfected the naval torpedo or mine system to be electrically activated when the cargo weight was lifted. This is how, on 3 July 1880, in front of the port of Callao , the gunned transport Loa flies when capturing

1504-509: A variable number of ships to pass unharmed before detonating. This made them a great deal harder to sweep. Mining campaigns could have devastating consequences. The U.S. effort against Japan, for instance, closed major ports, such as Hiroshima , for days, and by the end of the Pacific War had cut the amount of freight passing through Kobe – Yokohama by 90%. When the war ended, more than 25,000 U.S.-laid mines were still in place, and

1598-445: Is a self-contained explosive device placed in water to damage or destroy surface ships or submarines . Similar to anti-personnel and other land mines , and unlike purpose launched naval depth charges , they are deposited and left to wait until, depending on their fuzing , they are triggered by the approach of or contact with any vessel. Naval mines can be used offensively, to hamper enemy shipping movements or lock vessels into

1692-688: Is just one example of a ship that was struck by a magnetic mine during this time. On 21 November 1939, a mine broke her keel, which damaged her engine and boiler rooms, as well as injuring 46 men, one later died from his injuries. She was towed to Rosyth for repairs. Incidents like this resulted in many of the boats that sailed to Dunkirk being degaussed in a marathon four-day effort by degaussing stations. The Allies and Germany deployed acoustic mines in World War II, against which even wooden- hulled ships (in particular minesweepers ) remained vulnerable. Japan developed sonic generators to sweep these;

1786-460: Is the practice of the removal of explosive naval mines, usually by a specially designed ship called a minesweeper using various measures to either capture or detonate the mines, but sometimes also with an aircraft made for that purpose. There are also mines that release a homing torpedo rather than explode themselves. Mines can be laid in many ways: by purpose-built minelayers , refitted ships, submarines, or aircraft —and even by dropping them into

1880-540: The Petropavlovsk struck them near Port Arthur , sending the holed vessel to the bottom and killing the fleet commander, Admiral Stepan Makarov , and most of his crew in the process. The toll inflicted by mines was not confined to the Russians, however. The Japanese Navy lost two battleships, four cruisers, two destroyers and a torpedo-boat to offensively laid mines during the war. Most famously, on 15 May 1904,

1974-482: The Battle of Hampton Roads between Monitor and Virginia greatly overshadowed the bloody events each side's ground troops were fighting, largely because it was the first battle in history between two iron-armored steam-powered warships. The last Confederate surrender took place in Liverpool , United Kingdom on November 6, 1865, aboard the commerce raider CSS Shenandoah when her flag ( battle ensign )

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2068-535: The Gulf of Finland during the Crimean War of 1853–1856. The mining of Vulcan led to the world's first minesweeping operation. During the next 72 hours, 33 mines were swept. The Jacobi mine was designed by German-born, Russian engineer Jacobi, in 1853. The mine was tied to the sea bottom by an anchor. A cable connected it to a galvanic cell which powered it from the shore, the power of its explosive charge

2162-596: The Korean War , mines laid by North Korean forces caused 70% of the casualties suffered by U.S. naval vessels and caused 4 sinkings. During the Iran–Iraq War from 1980 to 1988, the belligerents mined several areas of the Persian Gulf and nearby waters. On 24 July 1987, the supertanker SS Bridgeton was mined by Iran near Farsi Island. On 14 April 1988, USS  Samuel B. Roberts struck an Iranian mine in

2256-546: The Ottoman Empire , and Germany . However, the United States did not acknowledge the Confederacy as an independent country and denied the legitimacy of any letters of marque issued by its government. U.S. President Abraham Lincoln declared all medicines to the Confederacy to be contraband and any captured Confederate privateers were to be hanged as pirates. Ultimately, no one was hanged for privateering because

2350-475: The British. In 1855, 301 more Jacobi mines were laid around Krostadt and Lisy Nos . British ships did not dare to approach them. In the 19th century, mines were called torpedoes , a name probably conferred by Robert Fulton after the torpedo fish , which gives powerful electric shocks . A spar torpedo was a mine attached to a long pole and detonated when the ship carrying it rammed another one and withdrew

2444-839: The Captains, five of the Commanders, twenty-two of the First Lieutenants, and five of the Second Lieutenants, shall be appointed solely for gallant or meritorious conduct during the war." The Department of the Navy was responsible for the administration of the affairs of the Confederate Navy and Confederate Marine Corps . It included various offices, bureaus, and naval agents in Europe. By July 20, 1861,

2538-500: The Confederacy was able to construct at least twenty ironclads that were commissioned and put into operation during the war. One of the more well-known ships was the CSS Virginia , formerly the sloop-of-war USS Merrimack (1855). In 1862, after being converted to an ironclad ram, she fought USS Monitor in the Battle of Hampton Roads , an event that came to symbolize the end of the dominance of large wooden sailing warships and

2632-497: The Confederate States Navy had 30 vessels, only 14 of which were seaworthy. The opposing Union Navy had 90 vessels. The C. S. Navy eventually grew to 101 ships to meet the rise in naval conflicts and threats to the coast and rivers of the Confederacy. On April 20, 1861, the U.S. was forced to quickly abandon the important Gosport Navy Yard at Portsmouth, Virginia . In their haste, they failed to effectively burn

2726-529: The Confederate States, against ships and property of the United States and their citizens: Now, therefore, I, Jefferson Davis, President of the Confederate States of America, do issue this, my proclamation, inviting all those who may desire, by service in private armed vessels on the high seas, to aid this government in resisting so wanton and wicked an aggression, to make application for commissions or letters of marque and reprisal, to be issued under

2820-566: The Confederate economy. In May 1861, Confederate Congress appropriated $ 2,000,000 to either construct or purchase ironclad vessels in England. The Confederacy intended to use the European ironclads to break the Union blockade. Aside from those built in Europe, the Confederacy also manufactured their own vessels. Despite a lack of materials (especially iron and engines) and shipbuilding facilities,

2914-446: The Confederate government had organized the administrative positions of the Confederate navy as follows: By 1862 regulations specified the uniforms and rank insignia for officers. Petty officers wore a variety of uniforms, or even regular clothing. Officers of the Confederate States Navy used, just like the army, a combination of several rank insignias to indicate their rank. While both hat insignia and sleeve insignia were used here

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3008-550: The Confederate government threatened to retaliate against U.S. prisoners of war . Initially, Confederate privateers operated primarily from New Orleans , but activity was soon concentrated in the Atlantic, as the Union Navy began expanding its operations. Confederate privateers harassed Union merchant ships and sank several warships, although they were unable to relieve the blockade on Southern ports and its dire effects on

3102-554: The English Channel, North Sea and French coast. Naval mines were first invented by Chinese innovators of Imperial China and were described in thorough detail by the early Ming dynasty artillery officer Jiao Yu , in his 14th-century military treatise known as the Huolongjing . Chinese records tell of naval explosives in the 16th century, used to fight against Japanese pirates ( wokou ). This kind of naval mine

3196-533: The First Congress expanded this to four admirals, ten captains, 31 commanders, 100 first lieutenants, 25 second lieutenants, and 20 masters in line of promotion; additionally, there were to be 12 paymasters, 40 assistant paymasters, 22 surgeons, 15 passed assistant surgeons, 30 assistant surgeons, one engineer-in-chief, and 12 engineers. The act also provided for promotion on merit: "All the Admirals, four of

3290-701: The French; they planted nine torpedo mines in the river and blocked the entrance. During the Boxer Rebellion , Imperial Chinese forces deployed a command-detonated mine field at the mouth of the Hai River before the Dagu forts , to prevent the western Allied forces from sending ships to attack. The next major use of mines was during the Russo-Japanese War of 1904–1905. Two mines blew up when

3384-598: The Gosport Yard was sorely needed to build new warships. The most significant warship left at the Yard was the screw frigate USS Merrimack . The U.S. Navy had torched Merrimack' s superstructure and upper deck, then scuttled the vessel; it would have been immediately useful as a warship to their enemy. Little of the ship's structure remained other than the hull, which was holed by the scuttling charge but otherwise intact. Confederate Navy Secretary Stephen Mallory had

3478-681: The Hazegray website undertook to transcribe the DANFS and make it available on the World Wide Web . The project goal is a direct transcription of the DANFS , with changes limited to correcting typographical errors and editorial notes for incorrect facts in the original. In 2008 the NHC was re-designated as the Naval History and Heritage Command (NHHC). It has developed an online version of DANFS (see External links section below) through

3572-615: The Navy proved unable to sweep them all, limiting efforts to critical areas. After sweeping for almost a year, in May 1946, the Navy abandoned the effort with 13,000 mines still unswept. Over the next thirty years, more than 500 minesweepers (of a variety of types) were damaged or sunk clearing them. The U.S. began adding delay counters to their magnetic mines in June 1945. Since World War II , mines have damaged 14 United States Navy ships, whereas air and missile attacks have damaged four. During

3666-549: The North Sea, the British East Coast, Straits of Dover, and Heligoland Bight is estimated at 190,000 and the total number during the whole of WWI was 235,000 sea mines. Clearing the barrage after the war took 82 ships and five months, working around the clock. It was also during World War I, that the British hospital ship , HMHS  Britannic , became the largest vessel ever sunk by a naval mine . The Britannic

3760-721: The Russian minelayer Amur planted a 50-mine minefield off Port Arthur and succeeded in sinking the Japanese battleships Hatsuse and Yashima . Following the end of the Russo-Japanese War, several nations attempted to have mines banned as weapons of war at the Hague Peace Conference (1907) . Many early mines were fragile and dangerous to handle, as they contained glass containers filled with nitroglycerin or mechanical devices that activated

3854-467: The U.S. coast. Initially, contact mines (requiring a ship to physically strike a mine to detonate it) were employed, usually tethered at the end of a cable just below the surface of the water. Contact mines usually blew a hole in ships' hulls. By the beginning of World War II, most nations had developed mines that could be dropped from aircraft, some of which floated on the surface, making it possible to lay them in enemy harbours. The use of dredging and nets

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3948-717: The US Navy forced the south to overload its limited railroads to the point of failure. The surrender of the CSS ; Shenandoah in Liverpool, England, marked the end of the Civil War and the Confederate Navy's existence. The Confederate Navy could never achieve numerical equality with the Union Navy . It instead sought to take advantage of technological innovation, such as ironclads , submarines , torpedo boats , and naval mines (then known as torpedoes). In February 1861,

4042-737: The beginning of the age of steam and the ironclad warship. The Confederates also constructed submarines , among the few that existed after the early Turtle of the American Revolutionary War . Of those the Pioneer and the Bayou St. John submarine never saw action. However, Hunley , built in Mobile as a privateer by Horace Hunley , later came under the control of the Confederate Army at Charleston, SC, but

4136-509: The central Persian Gulf shipping lane , wounding 10 sailors. In the summer of 1984, magnetic sea mines damaged at least 19 ships in the Red Sea . The U.S. concluded Libya was probably responsible for the minelaying. In response the U.S., Britain, France, and three other nations launched Operation Intense Look , a minesweeping operation in the Red Sea involving more than 46 ships. On

4230-684: The coasts of these countries. London P&I Club issued a warning to freight ships in the area, advising them to "maintain lookouts for mines and pay careful attention to local navigation warnings". Ukrainian forces have mined "from the Sea of Azov to the Black Sea which banks the critical city of Odesa." Naval mines may be classified into three major groups; contact, remote and influence mines. The earliest mines were usually of this type. They are still used today, as they are extremely low cost compared to any other anti-ship weapon and are effective, both as

4324-673: The conflict had ended. Between the beginning of the war and the end of 1861, 373 commissioned officers, warrant officers, and midshipmen had resigned or been dismissed from the United States Navy and had gone on to serve the Confederacy. The Provisional Congress meeting in Montgomery accepted these men into the Confederate Navy at their old rank. In order to accommodate them they initially provided for an officer corps to consist of four captains, four commanders, 30 lieutenants, and various other non-line officers. On 21 April 1862,

4418-584: The decade following 1868, Major Henry Larcom Abbot carried out a lengthy set of experiments to design and test moored mines that could be exploded on contact or be detonated at will as enemy shipping passed near them. This initial development of mines in the United States took place under the purview of the U.S. Army Corps of Engineers , which trained officers and men in their use at the Engineer School of Application at Willets Point, New York (later named Fort Totten ). In 1901 underwater minefields became

4512-589: The disadvantage of "sweeping" only a small strip. A better solution was found in the "Double-L Sweep" using electrical cables dragged behind ships that passed large pulses of current through the seawater. This created a large magnetic field and swept the entire area between the two ships. The older methods continued to be used in smaller areas. The Suez Canal continued to be swept by aircraft, for instance. While these methods were useful for clearing mines from local ports, they were of little or no use for enemy-controlled areas. These were typically visited by warships, and

4606-405: The enemy, 10; now under construction, 9; ironclad vessels now in commission, 12; completed and destroyed or lost by capture, 4; in progress of construction and in various stages of forwardness, 23. In addition to the ships included in the report of the committee, the C.S. Navy also had one ironclad floating battery, presented to the Confederacy by the state of Georgia , one ironclad ram donated by

4700-475: The explosion. Ships that had successfully run the gantlet of the Atlantic crossing were sometimes destroyed entering freshly cleared British harbours. More shipping was being lost than could be replaced, and Churchill ordered the intact recovery of one of these new mines to be of the highest priority. The British experienced a stroke of luck in November 1939, when a German mine was dropped from an aircraft onto

4794-483: The facility with its large depots of arms, other supplies, and several small vessels. As a result, the Confederacy captured a large supply of much-needed war materials, including heavy cannon, gunpowder, shot, and shell. Of most importance to the Confederacy was the shipyard's dry docks , barely damaged by the departing Union forces. The Confederacy's only substantial navy yard at that time was in Pensacola, Florida , so

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4888-572: The failed "floating petard". Weapons of this type were apparently tried by the English at the Siege of La Rochelle in 1627. American David Bushnell developed the first American naval mine, for use against the British in the American War of Independence . It was a watertight keg filled with gunpowder that was floated toward the enemy, detonated by a sparking mechanism if it struck a ship. It

4982-491: The first five years of service, then with lieutenants. Passed assistant surgeons and professors ranked with masters. Assistant surgeons, first assistant engineers and secretaries to commanders of squadrons ranked with passed midshipmen. Second and third assistant engineers and clerks to commanding officers and paymasters ranked as midshipmen. Annual pay for commissioned and warrant officers Monthly pay for petty officers, men and boys Naval mine A naval mine

5076-507: The first to be so fitted were the carrier HMS  Ark Royal and the liners RMS  Queen Mary and RMS  Queen Elizabeth . It was a photo of one of these liners in New York harbour, showing the degaussing coil, which revealed to German Naval Intelligence the fact that the British were using degaussing methods to combat their magnetic mines. This was felt to be impractical for smaller warships and merchant vessels, mainly because

5170-545: The force were several fireships , carrying 40 barrels of gunpowder and rigged to explode by a clockwork mechanism. In 1812, Russian engineer Pavel Shilling exploded an underwater mine using an electrical circuit . In 1842 Samuel Colt used an electric detonator to destroy a moving vessel to demonstrate an underwater mine of his own design to the United States Navy and President John Tyler . However, opposition from former president John Quincy Adams , scuttled

5264-543: The fuze of the naval mine. Although this is the rotating steel wheel's first use in naval mines, Jiao Yu described their use for land mines in the 14th century. The first plan for a sea mine in the West was by Ralph Rabbards, who presented his design to Queen Elizabeth I of England in 1574. The Dutch inventor Cornelius Drebbel was employed in the Office of Ordnance by King Charles I of England to make weapons, including

5358-475: The gear was not ready by war's end. The primary method Japan used was small air-delivered bombs. This was profligate and ineffectual; used against acoustic mines at Penang , 200 bombs were needed to detonate just 13 mines. The Germans developed a pressure-activated mine and planned to deploy it as well, but they saved it for later use when it became clear the British had defeated the magnetic system. The U.S. also deployed these, adding "counters" which would allow

5452-748: The globe. The Germans laid mines in shipping lanes to sink merchant and naval vessels serving Britain. The Allies targeted the German U-boats in the Strait of Dover and the Hebrides. In an attempt to seal up the northern exits of the North Sea, the Allies developed the North Sea Mine Barrage . During a period of five months from June 1918, almost 70,000 mines were laid spanning the North Sea's northern exits. The total number of mines laid in

5546-463: The greatest concentration of enemy firepower will be encountered. Although international law requires signatory nations to declare mined areas, precise locations remain secret, and non-complying parties might not disclose minelaying. While mines threaten only those who choose to traverse waters that may be mined, the possibility of activating a mine is a powerful disincentive to shipping. In the absence of effective measures to limit each mine's lifespan,

5640-566: The hazard to shipping can remain long after the war in which the mines were laid is over. Unless detonated by a parallel time fuze at the end of their useful life, naval mines need to be found and dismantled after the end of hostilities; an often prolonged, costly, and hazardous task. Modern mines containing high explosives detonated by complex electronic fuze mechanisms are much more effective than early gunpowder mines requiring physical ignition. Mines may be placed by aircraft, ships, submarines, or individual swimmers and boatmen. Minesweeping

5734-480: The idea to raise Merrimack and rebuild it. When the hull was raised, it had not been submerged long enough to have been rendered unusable; the steam engines and essential machinery were salvageable. The decks were rebuilt using thick oak and pine planking, and the upper deck was overlaid with two courses of heavy iron plate. The newly rebuilt superstructure was unusual: above the waterline, the sides sloped inward and were covered with two layers of heavy iron-plate armor,

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5828-417: The inside course laid horizontally, the outside course laid vertically. The vessel was a new kind of warship, an all-steam powered " iron-clad ". In the centuries-old tradition of reusing captured ships, the new warship was christened CSS Virginia . She later fought the Union's new ironclad USS Monitor . On the second day of the Battle of Hampton Roads , the two ships met and each scored numerous hits on

5922-452: The insistence of Admiral Fyodor Litke . The Nobel mines were bought from Swedish industrialist Immanuel Nobel who had entered into collusion with the Russian head of navy Alexander Sergeyevich Menshikov . Despite their high cost (100 Russian rubles ) the Nobel mines proved to be faulty, exploding while being laid, failing to explode or detaching from their wires, and drifting uncontrollably, at least 70 of them were subsequently disarmed by

6016-404: The majority of the fleet then underwent a massive degaussing process, where their hulls had a slight "south" bias induced into them which offset the concentration-effect almost to zero. Initially, major warships and large troopships had a copper degaussing coil fitted around the perimeter of the hull, energized by the ship's electrical system whenever in suspected magnetic-mined waters. Some of

6110-406: The mine and rushed it to the labs at HMS Vernon, where scientists discovered that the mine had a magnetic arming mechanism. A large ferrous object passing through the Earth's magnetic field will concentrate the field through it, due to its magnetic permeability; the mine's detector was designed to trigger as a ship passed over when the Earth's magnetic field was concentrated in the ship and away from

6204-434: The mine. The mine detected this loss of the magnetic field which caused it to detonate. The mechanism had an adjustable sensitivity, calibrated in milligauss . From this data, known methods were used to clear these mines. Early methods included the use of large electromagnets dragged behind ships or below low-flying aircraft (a number of older bombers like the Vickers Wellington were used for this). Both of these methods had

6298-439: The mudflats off Shoeburyness during low tide. Additionally, the land belonged to the army and a base with men and workshops was at hand. Experts were dispatched from HMS  Vernon to investigate the mine. The Royal Navy knew that mines could use magnetic sensors, Britain having developed magnetic mines in World War I, so everyone removed all metal, including their buttons, and made tools of non-magnetic brass . They disarmed

6392-404: The new " Stainless Banner ". Despite the detailed naval regulations issued, minor variations in the flags were frequently seen, due to different manufacturing techniques employed, suppliers used, and the flag-making traditions of each southern state. On April 17, 1861, Confederate President Jefferson Davis invited applications for letters of marque and reprisal to be granted under the seal of

6486-457: The orders of the Reagan administration , the CIA mined Nicaragua 's Sandino port in 1984 in support of the Contras . A Soviet tanker was among the ships damaged by these mines. In 1986, in the case of Nicaragua v. United States , the International Court of Justice ruled that this mining was a violation of international law. During the Gulf War , Iraqi naval mines severely damaged USS  Princeton and USS  Tripoli . When

6580-706: The other. On the first day of that battle Virginia , and the James River Squadron , aggressively attacked and nearly broke the Union Navy's sea blockade of wooden warships, proving the effectiveness of the ironclad concept. The two ironclads had steamed forward, tried to outflank or ram the other, circled, backed away, and came forward firing again and again, but neither was able to sink or demand surrender of its opponent. After four hours, both ships were taking on water through split seams and breaches from enemy shot. The engines of both ships were becoming dangerously overtaxed, and their crews were near exhaustion. The two ships turned and steamed away, never to meet again. This part in

6674-599: The primary indicator were shoulder straps. Only line officers wore those straps shown below as officers of various staff departments (Medical, Pay, Engineering and Naval Construction) had separate ranks and different straps. Likewise the anchor symbol on the hats was substituted accordingly and they did not wear loops on the sleeve insignias. Paymasters, surgeons and chief engineers of more than twelve year's standing ranked with commanders. Paymasters, surgeons and chief engineers of less than twelve year's standing ranked with lieutenants. Assistant paymasters ranked with masters during

6768-693: The project as "not fair and honest warfare". In 1854, during the unsuccessful attempt of the Anglo-French (101 warships) fleet to seize the Kronstadt fortress, British steamships HMS  Merlin (9 June 1855, the first successful mining in Western history), HMS  Vulture and HMS Firefly suffered damage due to the underwater explosions of Russian naval mines. Russian naval specialists set more than 1,500 naval mines, or infernal machines , designed by Moritz von Jacobi and by Immanuel Nobel , in

6862-910: The responsibility of the US Army's Artillery Corps, and in 1907 this was a founding responsibility of the United States Army Coast Artillery Corps . The Imperial Russian Navy , a pioneer in mine warfare, successfully deployed mines against the Ottoman Navy during both the Crimean War and the Russo-Turkish War (1877-1878) . During the War of the Pacific (1879-1883), the Peruvian Navy , at

6956-419: The sale of prizes and the distribution thereof," was also passed. Both acts granted the president power to issue letters of marque and detailed regulations as to the conditions on which letters of marque should be granted to private vessels, the conduct and behavior of the officers and crews of such vessels, and the disposal of such prizes made by privateer crews. The manner in which Confederate privateers operated

7050-579: The seal of these Confederate States... President Davis was not confident of his executive authority to issue letters of marque and called a special session of Congress on April 29 to formally authorize the hiring of privateers in the name of the Confederate States. On 6 May the Confederate Congress passed "An act recognizing the existence of war between the United States and the Confederate States, and concerning letters of marque, prizes, and prize goods." Then, on May 14, 1861, "An act regulating

7144-440: The ships lacked the generating capacity to energise such a coil. It was found that "wiping" a current-carrying cable up and down a ship's hull temporarily canceled the ships' magnetic signature sufficiently to nullify the threat. This started in late 1939, and by 1940 merchant vessels and the smaller British warships were largely immune for a few months at a time until they once again built up a field. The cruiser HMS  Belfast

7238-461: The state of Alabama , and numerous commerce raiders making war on Union merchant ships. When Virginia seceded the Virginia Navy was absorbed into the Confederate Navy. The practice of using primary and secondary naval flags after the British tradition was common practice for the Confederacy; the fledgling Confederate navy therefore adopted detailed flag requirements and regulations in

7332-468: The successful use of mines. The first ship sunk by a mine, USS  Cairo , foundered in 1862 in the Yazoo River . Rear Admiral David Farragut 's famous/apocryphal command during the Battle of Mobile Bay in 1864, " Damn the torpedoes, full speed ahead! " refers to a minefield laid at Mobile , Alabama. After 1865 the United States adopted the mine as its primary weapon for coastal defense . In

7426-424: The use of battle ensigns , naval jacks , as well as small boat ensigns , commissioning pennants , designating flags, and signal flags aboard its warships. Changes to these regulations were made during 1863, when a new naval jack, battle ensign, and commissioning pennant design was introduced aboard all Confederate ships, echoing the Confederacy ' s change of its national flag from the old " Stars and Bars " to

7520-560: The war concluded, eight countries conducted clearance operations. Houthi forces in the Yemeni Civil War have made frequent use of naval mines, laying over 150 in the Red Sea throughout the conflict. In the first month of the 2022 Russian invasion of Ukraine , Ukraine accused Russia of deliberately employing drifting mines in the Black Sea area. Around the same time, Turkish and Romanian military diving teams were involved in defusing operations, when stray mines were spotted near

7614-468: The war costly for the United States by attacking its merchant ships worldwide, and running the U.S. blockade by drawing off Union ships in pursuit of Confederate commerce raiders and warships. It was ineffective in these tasks, as the coastal blockade by the United States Navy reduced trade by the South to 5 percent of its pre-war levels. Additionally, the control of inland rivers and coastal navigation by

7708-704: Was the sister ship of the RMS Titanic , and the RMS ; Olympic . During World War II , the U-boat fleet, which dominated much of the battle of the Atlantic, was small at the beginning of the war and much of the early action by German forces involved mining convoy routes and ports around Britain. German submarines also operated in the Mediterranean Sea , in the Caribbean Sea , and along

7802-402: Was effective against this type of mine, but this consumed valuable time and resources and required harbours to be closed. Later, some ships survived mine blasts, limping into port with buckled plates and broken backs. This appeared to be due to a new type of mine, detecting ships by their proximity to the mine (an influence mine) and detonating at a distance, causing damage with the shock wave of

7896-774: Was equal to 14 kg (31 lb) of black powder . In the summer of 1853, the production of the mine was approved by the Committee for Mines of the Ministry of War of the Russian Empire . In 1854, 60 Jacobi mines were laid in the vicinity of the Forts Pavel and Alexander ( Kronstadt ), to deter the British Baltic Fleet from attacking them. It gradually phased out its direct competitor the Nobel mine on

7990-459: Was further disguised by wearing dark clothes and a black cap. His task was to approach the French ship, hook the torpedo to the anchor cable and, having activated the device by removing a pin, remove the paddles and escape before the torpedo detonated. Also to be deployed were large numbers of casks filled with gunpowder, ballast and combustible balls. They would float in on the tide and on washing up against an enemy's hull, explode. Also included in

8084-467: Was generally similar to those of privateers of the United States or of European nations. The 1856 Declaration of Paris outlawed privateering for such nations as the United Kingdom and France , but the United States had neither signed nor endorsed the declaration. Therefore, privateering was constitutionally legal in both the United States and the Confederacy, as well as Portugal , Russia ,

8178-472: Was loaded in a wooden box, sealed with putty . General Qi Jiguang made several timed, drifting explosives, to harass Japanese pirate ships. The Tiangong Kaiwu ( The Exploitation of the Works of Nature ) treatise, written by Song Yingxing in 1637, describes naval mines with a ripcord pulled by hidden ambushers located on the nearby shore who rotated a steel wheel flint mechanism to produce sparks and ignite

8272-471: Was lowered for the final time. This surrender brought about the end of the Confederate navy. The Shenandoah had circumnavigated the globe, the only Confederate ship to do so. The act of the Confederate Congress that created the Confederate Navy on February 21, 1861, also appointed Stephen Mallory as Secretary of the Department of the Navy. Mallory was experienced as an admiralty lawyer and had served for

8366-614: Was manned partly by a C. S. Navy crew; she became the first submarine to sink a ship in a wartime engagement. The Hunley later sank the sloop-of-war USS  Housatonic , resulting from the large blastwave that traveled from its exploding spar torpedo 's 500-pound black powder charge, during the sinking of USS Housatonic . The sinking of the Housatonic became the first successful submarine attack in history. Confederate Navy commerce raiders were also used with great success to disrupt U.S. merchant shipping. The most famous of them

8460-565: Was mostly from Liverpool, and the cruiser never once dropped anchor in a Confederate port, though she sank a blockading Union gunboat off the coast of Texas. She was sunk in June 1864 by USS  Kearsarge at the Battle of Cherbourg outside the port of Cherbourg, France . A similar raider, CSS Shenandoah , fired the last shot of the American Civil War in late June 1865; she did not strike her colors and surrender until early November 1865, in Liverpool, England five months after

8554-476: Was published in print by the Naval Historical Center (NHC) as bound hardcover volumes, ordered by ship name, from Volume I (A–B) in 1959 to Volume VIII (W–Z) in 1981. Several volumes subsequently went out of print. In 1991 a revised Volume I Part A , covering only ship names beginning with A, was released. Work continues on revisions of the remaining volumes. Volunteers at

8648-670: Was the naval branch of the Confederate States Armed Forces , established by an act of the Confederate States Congress on February 21, 1861. It was responsible for Confederate naval operations during the American Civil War against the United States's Union Navy . The three major tasks of the Confederate States Navy during its existence were the protection of Confederate harbors and coastlines from outside invasion, making

8742-560: Was the screw sloop-of-war CSS Alabama , a warship secretly built for the Confederacy in Birkenhead , near Liverpool , United Kingdom . She was launched as Enrica but was commissioned as CSS Alabama just off the Azores by her captain, Raphael Semmes . She began her world-famous raiding career under his command, accounting for 65 U.S. ships, a record that still remains unbeaten by any ship in naval warfare. CSS Alabama ' s crew

8836-469: Was used on the Delaware River as a drift mine, destroying a small boat near its intended target, a British warship. The 1804 Raid on Boulogne made extensive use of explosive devices designed by inventor Robert Fulton . The 'torpedo-catamaran' was a coffer-like device balanced on two wooden floats and steered by a man with a paddle. Weighted with lead so as to ride low in the water, the operator

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