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USS O'Brien (DD-51)
USS O&#039;brien DD-51
O'Brien during trials in 1915
Career (US Navy) US flag 48 stars.svg
Name: USS O'Brien (DD-51)
Namesake: Jeremiah O'Brien and his five brothers.
Ordered: March 1913[1]
Builder: William Cramp and Sons[2]
Yard number: 404[3]
Laid down: 8 September 1913[4]
Launched: 20 July 1914[2]
Sponsored by: Miss Marcia Bradbury Campbell[2]
Commissioned: 22 May 1915[4]
Decommissioned: 5 June 1922[2]
Struck: 8 March 1935[4]
Fate: Sold on 23 April 1935 and scrapped[2]
General characteristics
Class & type: O'Brien-class destroyer
Displacement: 1,050 long tons (1,070 t)[4]
1,171 long tons (1,190 t) fully loaded[2]
Length: 305 ft 3 in (93.04 m)[4]
Beam: 31 ft 1 in (9.47 m)[4]
Draft: 9 ft 6 in (2.90 m)[2]
10 ft 7 in (3.23 m) max[4]
Propulsion: 2 × screw propellers[1]
2 × Zoelly direct-drive steam turbines, 17,000 shp (13,000 kW)
4 × White-Forster boilers
Speed: 29 kn (33 mph; 54 km/h)[2]
Complement: 106 officers and enlisted[2]
Armament: 4 × 4 in (100 mm)/50 cal guns[1]
8 × 21 in (530 mm) torpedo tubes (4x2)
8 × torpedoes

USS O'Brien (Destroyer No. 51/DD-51) was the lead ship of her class of destroyers built for the United States Navy prior to the American entry into World War I. The ship was the second US Navy vessel named in honor of Jeremiah O'Brien and his five brothers Gideon, John, William, Dennis, and Joseph who, together on the sloop Unity, captured a British warship during the American Revolutionary War.

O'Brien was laid down by William Cramp and Sons of Philadelphia in September 1913 and launched in July 1914.

After her May 1915 commissioning, O'Brien sailed off the east coast and in the Caribbean. She was one of seventeen destroyers sent out to rescue survivors from five victims of German submarine U-53 off the Lightship Nantucket in October 1916. After the United States entered World War I in April 1917, O'Brien was sent overseas to patrol the Irish Sea out of Queenstown, Ireland.

After returning to the United States in January 1919, O'Brien revisited European waters in May to serve as one of the picket ships for the NC-type seaplanes in the first aerial crossing of the Atlantic. O'Brien was decommissioned at Philadelphia in June 1922. She was struck from the Naval Vessel Register in March 1935 and sold for scrapping in April.

Design and constructionEdit

O'Brien was authorized in March 1913 as the lead ship of the O'Brien class, which was an improved version of the Cassin-class destroyers authorized in 1911. Construction of the vessel was awarded to William Cramp and Sons of Philadelphia which laid down her keel on 8 September 1913. On 20 July 1914, O'Brien was launched by sponsor Miss Marcia Bradbury Campbell, great-great-granddaughter of Gideon O'Brien, one of the ship's namesakes. Gideon and his four brothers—John, William, Dennis, and Joseph—were crewmen aboard sloop Unity, under the command of their brother Jeremiah O'Brien, when that vessel captured HMS Margaretta on 12 June 1775 during the American Revolutionary War; the destroyer O'Brien was named after all six brothers, and was the second US Navy vessel named in their honor.[2] As built, the destroyer was 305 ft 3 in (93.04 m) in length, 31 ft 1 in (9.47 m) abeam, and drew 9 ft 6 in (2.90 m).[2][1] The ship had a standard displacement of 1,050 long tons (1,070 t) and displaced 1,171 long tons (1,190 t) when fully loaded.[1][4]

O'Brien had two Zoelly steam turbines that drove her two screw propellers, and an additional pair triple-expansion steam engines, each connected to one of the propeller shafts, for cruising purposes. Four oil-burning White-Forster boilers powered the engines, which could generate 17,000 shaft horsepower (13,000 kW), moving the ship at up to 29 knots (54 km/h).[2][1]

O'Brien's main battery consisted of four 4 in (100 mm)/50 cal Mark 9 guns,[2][5][Note 1] with each gun weighing in excess of 6,100 lb (2,800 kg).[5] The guns fired 33 lb (15 kg) armor-piercing projectiles at 2,900 ft/s (880 m/s). At an elevation of 20°, the guns had a range of 15,920 yd (14,560 m).[5]

O'Brien was also equipped with eight 21 in (533 mm) torpedo tubes. The General Board of the United States Navy had called for two anti-aircraft guns for the O'Brien-class ships, as well as provisions for laying up to 36 floating mines.[1] From sources, it is unclear if these recommendations were followed for O'Brien or any of the other ships of the class.

Pre-World War IEdit

O'Brien was commissioned into the United States Navy on 22 May 1915 under the command of Lieutenant Commander C. E. Courtney, after which she conducted her shakedown cruise between Newport, Rhode Island, and Hampton Roads, Virginia.[2] In fleet exercises off New York in November, O'Brien collided with the destroyer USS Drayton (DD-23), in a minor incident that carried away part of Drayton's topmast and wireless gear.[6] In December, she was assigned to the 5th Division, Torpedo Flotilla, Atlantic Fleet. From early 1916-spring of 1917, she operated with the Fleet along the East Coast and in Cuban waters.

At 05:30 on 8 October 1916, wireless reports came in of a German submarine stopping ships near the Lightship Nantucket, off the eastern end of Long Island. After an SOS from the British steamer SS West Point was received at about 12:30, Rear Admiral Albert Gleaves ordered O'Brien and other destroyers at Newport to attend to survivors.[7][Note 2]

The American destroyers arrived on the scene at about 17:00 when the U-boat, U-53 under the command of Kapitänleutnant Hans Rose,[Note 3] was in the process of stopping the Holland-America Line cargo ship Blommersdijk. Shortly after, U-53 stopped the British passenger ship Stephano.[9] As Rose had done with three other ships U-53 had sunk earlier in the day,[Note 4] he gave passengers and crew aboard Blommersdijk and Stephano adequate time to abandon the ships before sinking the pair.[10][11] In total, 226 survivors from U-53's five victims were rescued by the destroyer flotilla.[12]

In February 1917, one of O'Brien's gun crews hit a target at 5,000 yd (4,600 m) eight times in eight attempts with one of the destroyer's 4 in (100 mm) guns, a feat which earned the crew and O'Brien recognition in The Independent, a weekly newsmagazine published in Boston.[13]

World War IEdit

Returning from winter maneuvers off Cuba in March 1917, the ship was in the York River when the United States declared war on Germany on 6 April, entering World War I. After fitting out at Brooklyn Navy Yard, she got underway from New York on 15 May with Cummings,[2][14] Nicholson,[15] Cushing,[16] and Sampson,[17] and joined convoy at Halifax, Nova Scotia, en route to Ireland. Upon arrival at Queenstown on 24 May, O'Brien was assigned to the 6th Destroyer Division which cooperated with the British forces. She patrolled off the Irish coast in company with other destroyers answering distress calls and meeting eastbound convoys to escort them through the war zone.[2]

While escorting SS Elysia 12 nmi (14 mi; 22 km) off Queenstown on 16 June, lookouts on O'Brien sighted a periscope. Heading toward the submarine for an attack, a lookout in the foretop saw the submerged boat pass close along the starboard side. A depth charge was dropped but no immediate evidence of damage was found. Nearly three hours later, the British vessel HMS Jessamine reported a large patch of oil in approximately the same position. The next morning, Cushing also reported and confirmed Jessamine's report. The British Admiralty believed the submarine was probably seriously damaged. However, later investigation reveals that German submarine U-16, the submarine in question, continued to operate and completed her cruise.[2]

In the summer of 1918, O'Brien was transferred to the French coast where she continued her antisubmarine patrols through the end of the war.[2]

Inter-war periodEdit

After the signing of the Armistice on 11 November, which ended all fighting, O'Brien transported mail and passengers between Brest, France, and Plymouth, England.[2] She returned to New York on 8 January 1919,[2] but returned to European waters in May when she served as one of the rescue pickets stationed along the route across the Atlantic flown by three Navy NC-type seaplanes in the first aerial crossing of the Atlantic.[18]

In 1919, she assisted in the unsuccessful first attempt to lay the Ambrose Channel pilot cable.[19] In July 1920, she was assigned the hull code of DD-51 under the US Navy's alphanumeric classification system. O'Brien was decommissioned at Philadelphia on 5 June 1922.[2] The ship was struck from the Naval Vessel Register on 8 March 1935,[4] and broken up at the Philadelphia Navy Yard, and her materials sold for scrap on 23 April.[2]


  1. The 50 denotes the length of the gun barrels; in this case, the gun is 50 calibers, meaning that the gun is 50 times as long as its bore, or 200 inches (5.1 m) in this case. The Mark number is the version of the gun; in this case, the ninth US Navy design of the 4-inch/50 gun.
  2. According to a report in The New York Times on 9 October the other ships, in addition to O'Brien, were the flotilla's destroyer tender, Melville, and fifteen other destroyers: Aylwin, Balch, Benham, Cassin, Conyngham, Cummings, Cushing, Drayton, Ericsson, Fanning, Jarvis, McCall, Paulding, Porter, and Winslow.[7] A firsthand account of the events by a quartermaster from destroyer McDougal, published on 22 October 1916, indicates that ship was present as well.[8]
  3. U-53 had called at Newport on 7 October 1916, the day before the attacks, to drop off a letter for Johann Heinrich von Bernstorff, the German Ambassador to the United States, and had exchanged courtesy visits with Admirals Albert Gleaves and Austin M. Knight before departing.
  4. The other three ships were the British cargo ships West Point and Strathdene, and the Norwegian tanker Christian Knutsen.


  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Gardiner, pp. 122–23.
  2. 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 2.11 2.12 2.13 2.14 2.15 2.16 2.17 2.18 2.19 2.20 2.21 Naval History & Heritage Command. "O'Brien". Dictionary of American Naval Fighting Ships (DANFS). Retrieved 26 May 2009. 
  3. "O'Brien (6104888)". Miramar Ship Index. Retrieved 26 May 2009.  (subscription required)
  4. 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 Bauer and Roberts, p. 171.
  5. 5.0 5.1 5.2 DiGiulian, Tony (15 August 2008). "United States of America: 4"/50 (10.2 cm) Marks 7, 8, 9 and 10". 
  6. "Naval boats collide". 3 November 1915. p. 2. 
  7. 7.0 7.1 "Newport aroused by U-boat's raid" (pdf). 9 October 1916. p. 2. 
  8. "United States sailor describes rescue of U-53's victims" (pdf). 22 October 1916. p. X1. 
  9. Long, pp. 93–94.
  10. Long, p. 93.
  11. "Six of our ships see Stephano sunk" (pdf). 9 October 1916. p. 1. 
  12. "Newport opens arms to U-boat survivors" (pdf). 10 October 1916. p. 2. 
  13. "If you want to win your battles...". 19 February 1917. pp. 308–09. 
  14. "Cummings". Dictionary of American Naval Fighting Ships. Navy Department, Naval History & Heritage Command. Retrieved 26 May 2009. 
  15. "Nicholson". Dictionary of American Naval Fighting Ships. Navy Department, Naval History & Heritage Command. Retrieved 26 May 2009. 
  16. "Cushing". Dictionary of American Naval Fighting Ships. Navy Department, Naval History & Heritage Command. Retrieved 26 May 2009. 
  17. "Sampson". Dictionary of American Naval Fighting Ships. Navy Department, Naval History & Heritage Command. Retrieved 26 May 2009. 
  18. "Picture Data: Photo#: NH 95794, Trans-Atlantic Flight of the "NC" Aircraft, May 1919". Online Library of Selected Images. Naval History & Heritage Command. 16 December 2003. Retrieved 26 May 2009. 
  19. Crossley, A. (February 1921). "Piloting Vessels by Electrically Energized Cables". pp. 33–59. 

This article incorporates text from the public domain Dictionary of American Naval Fighting Ships. The entry can be found here.



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