USS Zenith (SP-61) was an armed motorboat that served in the United States Navy as a Section patrol vessel from 1917 to 1918.

USS Zenith (SP-61)
USS Zenith (SP-61) in 1917 or 1918
History
United States
NameUSS Zenith
NamesakePrevious name retained
BuilderMathis Yacht Building Company, Camden, New Jersey
Yard number65[1]
Completed1917
Acquired21 April 1917
Commissioned23 April 1917
Decommissioned21 November 1918
Stricken21 November 1918
HomeportPhiladelphia, Pennsylvania[2]
IdentificationON #214868, Callsign:LGTN[2]
FateReturned to owner 21 November 1918
General characteristics
TypeSection patrol vessel
Tonnage32 GRT[2]
Displacement19 tons
Length73 ft 3 in (22.33 m)
Beam11 ft 8.5 in (3.569 m)
Draft3 ft 10 in (1.17 m) aft
Propulsion2 X eight cylinder Duesenberg diesels
Speed27 knots
Complement12
Armament

Zenith was a motorboat or yacht designed by Bowes and Mower, Philadelphia, and built by the Mathis Yacht Building Company in 1917 at Camden, New Jersey for Charles Longstreth of Philadelphia, Commodore of the Corinthian Yacht Club of Philadelphia. The design was approved by naval authorities with the possibility of naval reserve service in mind. Zenith was turned over to naval authorities just before completion.[3][4] Zenith was the second Longstreth vessel in naval service. The first of the designated S.P. type, USS Arawan II (SP-1), entered naval service 27 March 1917.[5] Longstreth had been commissioned a Lieutenant Commander by the Navy and expected to command Zenith as he had Arawan II.[3][4][5]

The boat was powered by two 400 horsepower, eight cylinder Duesenberg diesel engines with estimated speed of 30 miles per hour at maximum 1,200 revolutions per minute. Armament was expected to be one 3-pounder gun forward and two machine guns aft with a complement of nine men.[3][4]

She was acquired by the U.S. Navy on 21 April 1917 at Philadelphia, Pennsylvania for service as a patrol vessel in World War I. She was designated SP-61 and commissioned as USS Zenith at Philadelphia on 23 April 1917. Assigned to section-patrol duty, Zenith conducted surveillance patrols to protect the harbors and estuaries of the 4th Naval District coastline—Pennsylvania, Delaware, and southern New Jersey—from enemy incursion, primarily against submarine and minelaying operations. She served until hostilities ended on 11 November 1918.

Zenith was decommissioned on 21 November 1918, just 10 days after the armistice. That same day, her name was struck from the Navy list and Zenith was returned to her owner.

References

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  1. ^ Colton, Tim (6 June 2018). "Mathis Yacht Building, Camden and Gloucester City NJ". ShipbuildingHistory. Retrieved 2 September 2018.
  2. ^ a b c United States Department of Commerce, Bureau of Navigation (1918). Fifteenth Annual List of Merchant Vessels of the United States. Washington, D.C.: U.S. Government Printing Office. p. 86. Retrieved 2 September 2018.
  3. ^ a b c "Zenith—30 Mile Patrol Boat". Motor Boat. Vol. XIV. 10 May 1917. p. 17. Retrieved 2 September 2018.
  4. ^ a b c "Yachts in Their War Paint". Motor Boat. Vol. XIV. 10 June 1917. p. 25. Retrieved 2 September 2018.
  5. ^ a b Naval History And Heritage Command (20 January 2016). "Arawan II". Dictionary of American Naval Fighting Ships. Naval History And Heritage Command. Retrieved 2 September 2018.