Question: Eldon P. Wyman (11 January 1917 - 7 December 1941) was an ensign serving aboard the USS Oklahoma (BB-37), a "Nevada"-class battleship, when the Japanese attacked Pearl Harbor on which date?

Context paragraphs:
USS England (DE-635): USS "England" (DE-635), a "Buckley"-class destroyer escort of the United States Navy, was named in honor of Ensign John C. England (1920–1941), who was killed in action aboard the battleship "Oklahoma" during the Japanese attack on Pearl Harbor on 7 December 1941.  Her sinking of six Japanese submarines in twelve days is a feat unparalleled in the history of antisubmarine warfare.

USS Nokomis (YT-142): USS "Nokomis" (YT-142/YTB-142/YTM-142) was a Woban-class harbor tug built in Bremerton, Wash, and assigned to Pearl Harbor, Hawaii, in 1940.  "Nokomis" was present during the Japanese attack on Pearl Harbor, December 7, 1941.  She was the first vessel on scene at the USS "Arizona", and was called off by the officers on deck because of the imminent explosion of the battery below deck.  It then left and helped beach the USS "Nevada", with  , and YT-153.  The beaching of the Nevada saved Pearl Harbor's mouth from being blocked.  After that the USS "Nokomis" fought fires and dewatered the battleship USS "California", for 3 days.  This effort made the "California" salvageable, to be recommissioned again later in the war.  "Nokomis" was also the last vessel to move the surviving YC-699 barge prior to the Japanese attack on Pearl Harbor.  Post-war she continued serving Pearl Harbor ships until she was decommissioned in May 1973, and eventually sold for "scrap" to Crowley, in San Francisco.  She was renamed "Sea Serpent" and served many years in the San Francisco Bay as a tug and fire boat.  In 1989, after the Loma Prieta earthquake in the SF Bay area, "Nokomis" and "Hoga" (which had been serving the City of Oakland as a fireboat) fought fires alongside each other again.

Battleship Row: Battleship Row was the grouping of eight U.S. battleships in port at Pearl Harbor, Hawaii, when the Japanese attacked on 7 December 1941.  These ships bore the brunt of the Japanese assault.  They were moored next to Ford Island when the attack commenced.  The ships were "Arizona" , "California" , "Maryland" , "Nevada" , "Oklahoma" , "Pennsylvania" , "Tennessee" , and "West Virginia" .  A repair ship (former coal ship), "Vestal" , was also present, moored next to "Arizona".

USS Neuendorf (DE-200): USS "Neuendorf" (DE-200), a "Buckley"-class destroyer escort of the United States Navy, was named in honor of Seaman First Class William Frederick Neuendorf (1916–1941), who was killed in action aboard the USS Nevada, as gun captain of No. 6 A.A. gun, gave an example of leadership, skill, and bravery that is remarked upon by all who observed it during the Japanese attack on Pearl Harbor on 7 December 1941.  He was commended posthumously "for distinguished devotion to duty and extraordinary courage and disregard for his own safety[,]" and was the most junior sailor mentioned specifically for distinguished conduct in the after action report of the USS Nevada regarding the attack on Pearl Harbor.

USS O'Neill: USS "O'Neill" (DE-188) was a "Cannon"-class destroyer escort in the United States Navy.  She was named for Ensign William Thomas O'Neill, Jr., killed on 7 December 1941, during the attack on Pearl Harbor, while serving aboard USS "Arizona" .

USS Darby (DE-218): USS "Darby" (DE-218), a "Buckley"-class destroyer escort of the United States Navy, was named in honor of Ensign Marshall E. Darby (1918–1941), who fell overboard, while serving aboard the battleship USS "Oklahoma" , during the Japanese attack on Pearl Harbor on 7 December 1941.

Benjamin R. Marsh, Jr.: Benjamin Raymond Marsh, Jr. (11 October 1916 – 7 December 1941)was born on 11 October 1916 in Lansing, Michigan.  He enlisted in the Naval Reserve on 17 August 1940 at Detroit, Michigan.  His enlistment terminated 13 February 1941, and he was appointed midshipman in the Reserve the following day, receiving his commission as ensign on 15 May 1941.  Initially assigned to the seaplane tender USS "Tangier" (AV-8), he was transferred on 4 November 1941 to USS "Arizona" (BB-39).  Ensign Marsh was declared dead following the attack on Pearl Harbor, 7 December 1941.

USS Scott (DE-214): USS "Scott" (DE-214), a "Buckley"-class destroyer escort of the United States Navy, was named in honor of Machinist's Mate First Class Robert R. Scott (1915–1941, who was killed in action during the Japanese attack on Pearl Harbor on 7 December 1941, while serving aboard the battleship USS "California" .  He was posthumously awarded the Medal of Honor for his heroism.

Eldon P. Wyman: Eldon P. Wyman (11 January 1917 - 7 December 1941) was an ensign serving aboard the USS Oklahoma (BB-37) when the Japanese attacked Pearl Harbor on 7 December 1941.  Wyman was among the sailors trapped inside the Oklahoma when it sank at its berth.

USS Oklahoma (BB-37): USS "Oklahoma" (BB-37) was a "Nevada"-class battleship built by the New York Shipbuilding Corporation for the United States Navy in 1910, notable for being the first American class of oil-burning dreadnoughts.

Supporting paragraphs: Eldon P. Wyman USS Oklahoma (BB-37)
Answer: 7 December 1941