USS Roper (DD-147)
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USS ''Roper'' (DD-147) was a ''Wickes''-class
destroyer In naval terminology, a destroyer is a fast, maneuverable, long-endurance warship intended to escort larger vessels in a fleet, convoy, or carrier battle group and defend them against a wide range of general threats. They were conceived i ...
in the
United States Navy The United States Navy (USN) is the naval warfare, maritime military branch, service branch of the United States Department of Defense. It is the world's most powerful navy with the largest Displacement (ship), displacement, at 4.5 millio ...
, later converted to a
high-speed transport High-speed transports were converted destroyers and destroyer escorts used in US Navy amphibious operations in World War II and afterward. They received the US Hull classification symbol APD; "AP" for transport and "D" for destroyer. In 1969, t ...
and redesignated APD-20. She was named for Lieutenant Commander Jesse M. Roper, commanding officer of , who died in 1901 while attempting to rescue a member of his crew. As of 2016, no other ships in the United States Navy have borne this name.


Construction

''Ropers keel was laid down on 19 March 1918 by
William Cramp & Sons William Cramp & Sons Shipbuilding Company (also known as William Cramp & Sons Ship & Engine Building Company) was an American shipbuilding company based in Philadelphia, Pennsylvania, founded in 1830 by William Cramp. During its heyday in late 19 ...
, of
Philadelphia Philadelphia ( ), colloquially referred to as Philly, is the List of municipalities in Pennsylvania, most populous city in the U.S. state of Pennsylvania and the List of United States cities by population, sixth-most populous city in the Unit ...
. She was launched on 17 August 1918 sponsored by Mrs. Jesse M. Roper, widow of Lieutenant Commander Roper, and commissioned on 15 February 1919.
Dictionary of American Naval Fighting Ships The ''Dictionary of American Naval Fighting Ships'' (''DANFS'') is the official reference work for the basic facts about ships used by the United States Navy. When the writing project was developed the parameters for this series were designed to ...

Roper
Accessed 27 January 2015.
''Roper'' was the first United States Navy warship to sink a German submarine during World War II.


Service history


Interwar period

Following shakedown off the
New England New England is a region consisting of six states in the Northeastern United States: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont. It is bordered by the state of New York (state), New York to the west and by the ...
coast, ''Roper'' sailed east in mid-June 1919 and, after stops at
Ponta Delgada Ponta Delgada (; ) is the largest municipality (''concelho'') and executive capital of the Autonomous Region of the Azores in Portugal. It is located on São Miguel Island, the largest and most populous in the archipelago. As of 2021, it has 67,2 ...
,
Gibraltar Gibraltar ( , ) is a British Overseas Territories, British Overseas Territory and British overseas cities, city located at the southern tip of the Iberian Peninsula, on the Bay of Gibraltar, near the exit of the Mediterranean Sea into the A ...
, and
Malta Malta, officially the Republic of Malta, is an island country in Southern Europe located in the Mediterranean Sea, between Sicily and North Africa. It consists of an archipelago south of Italy, east of Tunisia, and north of Libya. The two ...
, anchored in the
Bosporus The Bosporus or Bosphorus Strait ( ; , colloquially ) is a natural strait and an internationally significant waterway located in Istanbul, Turkey. The Bosporus connects the Black Sea to the Sea of Marmara and forms one of the continental bo ...
on 5 July. For the next month she supported
Peace Commission and Relief Committee Peace is a state of harmony in the absence of hostility and violence, and everything that discusses achieving human welfare through justice and peaceful conditions. In a societal sense, peace is commonly used to mean a lack of conflict (such a ...
work in the
Black Sea The Black Sea is a marginal sea, marginal Mediterranean sea (oceanography), mediterranean sea lying between Europe and Asia, east of the Balkans, south of the East European Plain, west of the Caucasus, and north of Anatolia. It is bound ...
area, carrying mail and passengers to and from
Constantinople Constantinople (#Names of Constantinople, see other names) was a historical city located on the Bosporus that served as the capital of the Roman Empire, Roman, Byzantine Empire, Byzantine, Latin Empire, Latin, and Ottoman Empire, Ottoman empire ...
,
Novorossisk Novorossiysk (, ; ) is a city in Krasnodar Krai, Russia. It is one of the largest ports on the Black Sea. It is one of the few cities designated by the Soviet Union as a Hero City. The population was History In antiquity, the shores of the ...
,
Batum Batumi (; ka, ბათუმი ), historically Batum or Batoum, is the second-largest city of Georgia and the capital of the Autonomous Republic of Adjara, located on the coast of the Black Sea in Georgia's southwest, north of the border ...
,
Samsun Samsun is a List of largest cities and towns in Turkey, city on the north coast of Turkey and a major Black Sea port. The urban area recorded a population of 738,692 in 2022. The city is the capital of Samsun Province which has a population of ...
, and
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. On 20 August the destroyer returned to the United States, at New York City, only to sail again six days later. At the end of the month she transited the
Panama Canal The Panama Canal () is an artificial waterway in Panama that connects the Caribbean Sea with the Pacific Ocean. It cuts across the narrowest point of the Isthmus of Panama, and is a Channel (geography), conduit for maritime trade between th ...
and moved north to San Diego. ''Roper'' remained on the West Coast until July 1921. On 23 July, she departed San Francisco, for duty on the Asiatic Station. Arriving at
Cavite Cavite, officially the Province of Cavite (; Chavacano: ''Provincia de Cavite''), is a Provinces of the Philippines, province of the Philippines located in the Calabarzon region. On the southern shores of Manila Bay and southwest of Manila, i ...
,
Philippine Islands The Philippines, officially the Republic of the Philippines, is an Archipelagic state, archipelagic country in Southeast Asia. Located in the western Pacific Ocean, it consists of List of islands of the Philippines, 7,641 islands, with a tot ...
, on 24 August, she remained in the Philippines into December. She then moved into Chinese waters and, into the summer, operated primarily from Hong Kong and
Chefoo Yantai, formerly known as Chefoo, is a coastal prefecture-level city on the Shandong Peninsula in northeastern Shandong province of the People's Republic of China. Lying on the southern coast of the Bohai Strait, Yantai borders Qingdao o ...
. On 25 August 1922, she headed back to California. Routed via
Nagasaki , officially , is the capital and the largest Cities of Japan, city of Nagasaki Prefecture on the island of Kyushu in Japan. Founded by the Portuguese, the port of Portuguese_Nagasaki, Nagasaki became the sole Nanban trade, port used for tr ...
, Midway, and
Pearl Harbor Pearl Harbor is an American lagoon harbor on the island of Oahu, Hawaii, west of Honolulu. It was often visited by the naval fleet of the United States, before it was acquired from the Hawaiian Kingdom by the U.S. with the signing of the Reci ...
she arrived at San Francisco on 13 October. Two days later she shifted to
San Pedro, Los Angeles San Pedro ( ; ) is a neighborhood located within the South Bay (Los Angeles County), South Bay and Los Angeles Harbor Region, Harbor region of the city of Los Angeles, California, United States. Formerly a separate city, it consolidated with Los ...
, thence proceeded to San Diego, where she was decommissioned on 14 December 1922 and berthed with the Pacific Reserve Fleet. Recommissioned on 18 March 1930, ''Roper'' resumed operations in the Pacific. Operating primarily in the southern California area, in active and rotating reserve squadrons, for the next seven years, she deployed to
Panama Panama, officially the Republic of Panama, is a country in Latin America at the southern end of Central America, bordering South America. It is bordered by Costa Rica to the west, Colombia to the southeast, the Caribbean Sea to the north, and ...
, to Hawaii and to the Caribbean for fleet problems and maneuvers in 1931, 1933, 1935, and 1936. During 1933,
Lieutenant, junior grade Lieutenant junior grade is a Junior officer, junior commissioned officer rank used in a number of navies. United States Lieutenant (junior grade), commonly abbreviated as LTJG or, historically, Lt. (j.g.) (as well as variants of both ab ...
Robert A. Heinlein Robert Anson Heinlein ( ; July 7, 1907 – May 8, 1988) was an American science fiction author, aeronautical engineer, and naval officer. Sometimes called the "dean of science fiction writers", he was among the first to emphasize scientific acc ...
, who would later gain fame as a
science fiction Science fiction (often shortened to sci-fi or abbreviated SF) is a genre of speculative fiction that deals with imaginative and futuristic concepts. These concepts may include information technology and robotics, biological manipulations, space ...
author, transferred aboard ''Roper''. In 1934 he was promoted to
lieutenant A lieutenant ( , ; abbreviated Lt., Lt, LT, Lieut and similar) is a Junior officer, junior commissioned officer rank in the armed forces of many nations, as well as fire services, emergency medical services, Security agency, security services ...
, then "invalided out," permanently disabled by
tuberculosis Tuberculosis (TB), also known colloquially as the "white death", or historically as consumption, is a contagious disease usually caused by ''Mycobacterium tuberculosis'' (MTB) bacteria. Tuberculosis generally affects the lungs, but it can al ...
. During January and February 1936, ''Roper'' moved north for operations in
Alaska Alaska ( ) is a non-contiguous U.S. state on the northwest extremity of North America. Part of the Western United States region, it is one of the two non-contiguous U.S. states, alongside Hawaii. Alaska is also considered to be the north ...
n waters. In February 1937, ''Roper'' departed California and, after transiting the
Panama Canal The Panama Canal () is an artificial waterway in Panama that connects the Caribbean Sea with the Pacific Ocean. It cuts across the narrowest point of the Isthmus of Panama, and is a Channel (geography), conduit for maritime trade between th ...
, joined the Atlantic Fleet. For the remainder of the year, through 1938, and into 1939, she conducted exercises primarily off the mid-Atlantic seaboard and, during part of each year, in the Caribbean. In November 1939, after the outbreak of World War II in Europe, she shifted from
Norfolk, Virginia Norfolk ( ) is an independent city (United States), independent city in the U.S. state of Virginia. It had a population of 238,005 at the 2020 United States census, 2020 census, making it the List of cities in Virginia, third-most populous city ...
, to
Key West Key West is an island in the Straits of Florida, at the southern end of the U.S. state of Florida. Together with all or parts of the separate islands of Dredgers Key, Fleming Key, Sunset Key, and the northern part of Stock Island, it con ...
, Florida, whence she patrolled the
Yucatán Channel The Yucatán Channel or Straits of Yucatán (Spanish: ''Canal de Yucatán'') is a strait between Mexico and Cuba. It connects the Yucatán Basin of the Caribbean Sea with the Gulf of Mexico. It is just over wide and nearly deep at its deepest po ...
and the
Florida Straits The Straits of Florida, Florida Straits, or Florida Strait () is a strait located south-southeast of the North American mainland, generally accepted to be between the Gulf of Mexico and the Atlantic Ocean, and between the Florida Keys (U.S.) ...
. In December, she returned to Norfolk. In January 1940, she moved south again, to
Charleston, South Carolina Charleston is the List of municipalities in South Carolina, most populous city in the U.S. state of South Carolina. The city lies just south of the geographical midpoint of South Carolina's coastline on Charleston Harbor, an inlet of the Atla ...
, and in March she headed north for duty on the New England Patrol.


World War II

Through the prewar
Neutrality Patrol On September 3, 1939, the British and French declarations of war on Germany initiated the Battle of the Atlantic. The United States Navy Chief of Naval Operations (CNO) established a combined air and ship patrol of the United States Atlantic co ...
period, ''Roper'' continued to range the waters off the East and Gulf Coasts. Off
Cape Cod Cape Cod is a peninsula extending into the Atlantic Ocean from the southeastern corner of Massachusetts, in the northeastern United States. Its historic, maritime character and ample beaches attract heavy tourism during the summer months. The ...
on 7 December 1941, it returned to Norfolk for an abbreviated availability at midmonth, and then steamed to NS Argentia,
Newfoundland Newfoundland and Labrador is the easternmost province of Canada, in the country's Atlantic region. The province comprises the island of Newfoundland and the continental region of Labrador, having a total size of . As of 2025 the population ...
. In early February 1942, it completed a convoy escort run to
Londonderry Port Londonderry Port, now operating as Foyle Port, is a port located on Lough Foyle in Northern Ireland. It is the United Kingdom’s most westerly port and an important northerly port on the island of Ireland. The current port is at Lisahally, Co ...
, then, in March, returned to the Norfolk area for patrol and escort duty. ''Roper'' was one of several ships to rescue survivors of the SS ''City of New York'' that had been sunk by '' U-160''. Desanka Mohorovic, one of the passengers, ended up giving birth in one of the lifeboats. She was picked up by ''Roper'', and ended up naming her baby after the rescue vessel. A month later, on the night of 13/14 April, it made contact with a surfaced
U-boat U-boats are Submarine#Military, naval submarines operated by Germany, including during the World War I, First and Second World Wars. The term is an Anglicization#Loanwords, anglicized form of the German word , a shortening of (), though the G ...
off the coast of
North Carolina North Carolina ( ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It is bordered by Virginia to the north, the Atlantic Ocean to the east, South Carolina to the south, Georgia (U.S. stat ...
. The ensuing chase ended with the sinking by artillery fire of , a unit of the
7th U-boat Flotilla The 7th U-boat Flotilla (German 7. Unterseebootsflottille), also referred to as the Wegener Flotilla, was a combat unit within the ''Kriegsmarine'', the naval warfare branch of Nazi Germany. It was the seventh operational flotilla focused on U-bo ...
. Thus the ''Roper'' sank the first German submarine by U.S. naval forces in WWII. According to the after-action report, the attack occurred after midnight local time after ''Roper'' closed to identify an unknown contact (''U-85'') and was narrowly missed by a torpedo before opening fire. The commanding officer delayed rescue operations until daybreak and after the arrival of air support from a
PBY Catalina The Consolidated Model 28, more commonly known as the PBY Catalina (U.S. Navy designation), is a flying boat and amphibious aircraft designed by Consolidated Aircraft in the 1930s and 1940s. In U.S. Army service, it was designated as the O ...
and an airship due to concern of an attack by a second U-boat. No charges were filed against the crew of ''Roper'' and 29 sailors of ''U-85'' were buried with military honors at
Hampton National Cemetery Hampton National Cemetery is a United States National Cemetery in the city of Hampton, Virginia. It encompasses , and as of 2014, had over 30,000 interments. There are two separate parts to this facility. The original cemetery is called the "Ham ...
. For their actions in sinking ''U-85'', Destroyer Division 54 commander, Commander Stanley C. Norton, and the ''Roper''s captain, Lieutenant commander Hamilton W. Howe, were each awarded the
Navy Cross The Navy Cross is the United States Naval Service's second-highest military decoration awarded for sailors and marines who distinguish themselves for extraordinary heroism in combat with an armed enemy force. The medal is equivalent to the Army ...
. Former commander of German
U-boat U-boats are Submarine#Military, naval submarines operated by Germany, including during the World War I, First and Second World Wars. The term is an Anglicization#Loanwords, anglicized form of the German word , a shortening of (), though the G ...
''U-802'' and author Helmut Schmoeckel suggested in a 2002 book that the failure of ''Roper'' to rescue the ''U-85'' crew after they abandoned the submarine and ''Roper''s subsequent depth charging of ''U-85'' should be investigated. He never used the phrase war crime, as is sometimes stated, and he relied on a very inaccurate American book as his source.Helmut Schmoeckel, ''79. Tötung deutscher Schiffbrüchiger durch den US-Zerstörer ROPER nach der Versenkung von »U 85« am 18 April 1942.'' In: Franz W. Seidler /
Alfred de Zayas Alfred-Maurice de Zayas (born 31 May 1947) is a Cuban-born American lawyer and writer, active in the field of human rights and international law. From 1 May 2012 to 30 April 2018, he served as the first UN Independent Expert on the Promotion o ...
(Hg.) ''Kriegsverbrechen in Europa und im Nahen Osten im 20. Jahrhundert'' (War crimes in Europe and the Near East in 20th Century). (German). .
On 29 April, ''Roper'' rescued 14 survivors from the British merchantman , which had been torpedoed and sunk by five days earlier. On 1 May, it rescued another 13 survivors from ''Empire Drum''. They were landed at
Norfolk, Virginia Norfolk ( ) is an independent city (United States), independent city in the U.S. state of Virginia. It had a population of 238,005 at the 2020 United States census, 2020 census, making it the List of cities in Virginia, third-most populous city ...
, that day. At the end of May, ''Roper'' began a series of coastwise escort runs, from Key West to New York, which took her into 1943. In February of that year, it shifted to Caribbean–Mediterranean convoy work and remained on that duty until October when it entered the
Charleston Navy Yard Charleston Naval Shipyard (formerly known as the Charleston Navy Yard) was a U.S. Navy ship building and repair facility located along the west bank of the Cooper River (South Carolina), Cooper River, in North Charleston, South Carolina and p ...
for conversion to a high-speed transport.


Convoys escorted


Auxiliary service

Reclassified and given
hull classification symbol The United States Navy, United States Coast Guard, and United States National Oceanic and Atmospheric Administration (NOAA) use a hull classification symbol (sometimes called hull code or hull number) to identify their ships by type and by ind ...
APD-20 (transport destroyer) on 20 October 1943, ''Roper'' departed Charleston in late November and trained in the
Chesapeake Bay The Chesapeake Bay ( ) is the largest estuary in the United States. The bay is located in the Mid-Atlantic (United States), Mid-Atlantic region and is primarily separated from the Atlantic Ocean by the Delmarva Peninsula, including parts of the Ea ...
area and off the Florida coast into the new year, 1944. On 13 April, she steamed east and at the end of the month joined the 8th Fleet at
Oran Oran () is a major coastal city located in the northwest of Algeria. It is considered the second most important city of Algeria, after the capital, Algiers, because of its population and commercial, industrial and cultural importance. It is w ...
, Algeria. A unit of Transport Division 13, assigned to support the offensive in Italy, ''Roper'' landed units of the
French Army The French Army, officially known as the Land Army (, , ), is the principal Army, land warfare force of France, and the largest component of the French Armed Forces; it is responsible to the Government of France, alongside the French Navy, Fren ...
on
Pianosa Pianosa () is an island in the Tuscan Archipelago in the Tyrrhenian Sea, Italy. It is about in area, with a coastal perimeter of . Geography In Roman times, the island was named ''Planasia'' (plain) because of its flatness – its highest po ...
on 17 June and, into July, plied between Oran and
Naples Naples ( ; ; ) is the Regions of Italy, regional capital of Campania and the third-largest city of Italy, after Rome and Milan, with a population of 908,082 within the city's administrative limits as of 2025, while its Metropolitan City of N ...
and operated along the western coast of the embattled peninsula. In August, she shifted her attention to southern France. On 15 August, she arrived off that coast as part of the "Sitka" Force and landed troops on
Levant Island Île du Levant (), sometimes referred to as Le Levant, is a French island in the Mediterranean off the coast of the Riviera, near Toulon. It is one of the four that constitute the Îles d'Hyères. Part of the island is occupied by the naturist r ...
. On 5 September she returned to Italy; resumed runs between Naples and Oran, and, in early December departed the latter port for
Hampton Roads Hampton Roads is a body of water in the United States that serves as a wide channel for the James River, James, Nansemond River, Nansemond, and Elizabeth River (Virginia), Elizabeth rivers between Old Point Comfort and Sewell's Point near whe ...
. Arriving at Norfolk on 21 December, ''Roper'' sailed again on 29 January 1945. On transiting the
Panama Canal The Panama Canal () is an artificial waterway in Panama that connects the Caribbean Sea with the Pacific Ocean. It cuts across the narrowest point of the Isthmus of Panama, and is a Channel (geography), conduit for maritime trade between th ...
, she reported to the Pacific Fleet, and, after stops in California and Hawaii, moved into the
Mariana Islands The Mariana Islands ( ; ), also simply the Marianas, are a crescent-shaped archipelago comprising the summits of fifteen longitudinally oriented, mostly dormant volcanic mountains in the northwestern Pacific Ocean, between the 12th and 21st pa ...
.


= Okinawa

= On 11 May 1945, she departed
Guam Guam ( ; ) is an island that is an Territories of the United States, organized, unincorporated territory of the United States in the Micronesia subregion of the western Pacific Ocean. Guam's capital is Hagåtña, Guam, Hagåtña, and the most ...
for the
Ryukyu Islands The , also known as the or the , are a chain of Japanese islands that stretch southwest from Kyushu to Geography of Taiwan, Taiwan: the Ryukyu Islands are divided into the Satsunan Islands (Ōsumi Islands, Ōsumi, Tokara Islands, Tokara and A ...
. Arriving in
Nakagusuku Wan is a bay on the southern coast of Okinawa Island on the Pacific Ocean in Japan. The bay covers and ranges between to deep. The bay is surrounded by the municipalities of Uruma, Kitanakagusuku, Nakagusuku, Nishihara, Yonabaru, Nanjō, all in ...
on 22 May, she circled to the
Hagushi Hagushi bay is located in Yomitan, Okinawa Island, Okinawa. The bay is at the mouth of Hija River. The north side of the mouth of the river has a public beach called Toguchi Beach. World War II Hagushi bay was the primary unloading point for ...
anchorage off Okinawa the same day. Three days later, while on screening station off that transport area she was hit by a ''
kamikaze , officially , were a part of the Japanese Special Attack Units of military aviators who flew suicide attacks for the Empire of Japan against Allied naval vessels in the closing stages of the Pacific campaign of World War II, intending to d ...
'' attack. Ordered back to the United States to complete repairs, she departed the Ryukyus on 6 June and reached San Pedro a month later. In August, she shifted to
Mare Island Mare Island (Spanish language, Spanish: ''Isla de la Yegua'') is a peninsula in the United States in the city of Vallejo, California, about northeast of San Francisco. The Napa River forms its eastern side as it enters the Carquinez Strait junc ...
, but with the cessation of hostilities repair work was halted.


Fate

Decommissioned on 15 September 1945, ''Roper''s name was stricken from the
Naval Vessel Register The ''Naval Vessel Register'' (NVR) is the official inventory of ships and service craft in custody of or titled by the United States Navy. It contains information on ships and service craft that make up the official inventory of the Navy from t ...
on 11 October 1945, and her hulk was sold to the Lerner Company,
Oakland, California Oakland is a city in the East Bay region of the San Francisco Bay Area in the U.S. state of California. It is the county seat and most populous city in Alameda County, California, Alameda County, with a population of 440,646 in 2020. A major We ...
. Removed in June 1946, she was scrapped in December 1946.


Legacy

''Ropers
anchor An anchor is a device, normally made of metal, used to secure a vessel to the bed of a body of water to prevent the craft from drifting due to wind or current. The word derives from Latin ', which itself comes from the Greek (). Anch ...
is located outside of building 5 of the
Massachusetts Institute of Technology The Massachusetts Institute of Technology (MIT) is a Private university, private research university in Cambridge, Massachusetts, United States. Established in 1861, MIT has played a significant role in the development of many areas of moder ...
campus.


Awards

*
American Defense Service Medal The American Defense Service Medal was a United States service medals of the World Wars, military award of the United States Armed Forces, established by , by President Franklin D. Roosevelt, on June 28, 1941. The medal was intended to recogniz ...
*
American Campaign Medal The American Campaign Medal was a military award of the United States Armed Forces which was first created on November 6, 1942, by issued by President Franklin D. Roosevelt. The medal was intended to recognize those military members who had per ...
with one
battle star A service star is a miniature bronze or silver five-pointed star in diameter that is authorized to be worn by members of the eight uniformed services of the United States on medals and ribbons to denote an additional award or service period. T ...
* European-African-Middle Eastern Campaign Medal with two battle stars *
Asiatic–Pacific Campaign Medal The Asiatic–Pacific Campaign Medal was a United States military award of the Second World War, which was awarded to any member of the United States Armed Forces who served in the Asiatic-Pacific Theater from 1941 to 1945. The medal was create ...
with one battle star *
World War II Victory Medal The World War II Victory Medal was a service medal of the United States military which was established by an Act of Congress on 6 July 1945 (Public Law 135, 79th Congress) and promulgated by Section V, War Department Bulletin 12, 1945. Histo ...
''Roper'' was one a very few U.S. Navy ships to have received battle stars in all three theaters of operations during World War II.


Notable crew

* Ernest E. Evans – future MOH recipient. Served aboard ''Roper'' from 1932 to 1933 as an ensign. *
Robert A. Heinlein Robert Anson Heinlein ( ; July 7, 1907 – May 8, 1988) was an American science fiction author, aeronautical engineer, and naval officer. Sometimes called the "dean of science fiction writers", he was among the first to emphasize scientific acc ...
– served aboard ''Roper'' from 1933 to 1934 as a lieutenant.


Notes


Bibliography

* *


External links


Uboat Archive – ''U-85''


(German) {{DEFAULTSORT:Roper (Dd-147) Wickes-class destroyers World War II destroyers of the United States World War II amphibious warfare vessels of the United States Ships built by William Cramp & Sons 1918 ships