` ALACRITY (AG 520) Class
Quick Links Menu.



USS Assurance (AG 521) in a photo received in 1977.
Click on this photograph for links to larger images of this class.

Class: ALACRITY (AG 520)
Design: Navy MSO 519
Displacement (tons): #,###
Dimensions (feet): ###.#' x ##.#' x ##.#'
Original armament: 4-5"/38
Later armaments: (19xx) 4-20mm
Complement: ###
Speed (kts.): ##.#
Propulsion (HP): #,###
Machinery: turbines, # screw

Construction:
AGNameReclasBuilderKeelLaunchComm
520ALACRITY1 Jun 1973Peterson3 May 19568 Jun 1957COMM
521ASSURANCE1 Mar 1973Peterson28 Jan 195731 Aug 1957COMM

Disposition:
AGNameTDecommStrikeDisposalFateMA Sale
520ALACRITY30 Sep 197730 Sep 19771 Jul 1978Navy sale--
521ASSURANCE30 Sep 197730 Sep 19771 Jul 1978Navy sale--

Class Notes:
Three MSOs of a new design were ordered on 26 Oct 1955 from Peterson, ABILITY (MSO 519) and these two. On 11 Jun 1970 MSO 519 began a SCB 502.69 alteration under a contract of 2 Feb 1970 with Todd, Brooklyn but the project was cancelled on 16 Oct 1970 and the MSO was struck on 1 Feb 1971 and sold on 3 Dec 1971. Her sisters were used as sonar research ships from 1973, the minesweeping cable reels aft of the stack being replaced with a deckhouse.

Ship Notes:
AGNameMANotes
520ALACRITY(ex-MSO-520,ex-AM-520, comm. 1 Oct 1958) [Sold 28 Dec 1979 in Silverstone.]
521ASSURANCE(ex-MSO-521,ex-AM-520, comm. 21 Nov 1958)

Page Notes:
Compiled: 18 Oct 2021
© Stephen S. Roberts, 2021
Sources: DB, Maroon, NVR