USS Mackenzie (DD-175)/ HMCS Annapolis

USS Mackenzie (DD-175) was a Wickes class destroyer that served with the Royal Canadian Navy as HMCS Annapolis.

The Mackenzie (DD-175) was named after Lt Commander Alexander Slidell MacKenzie, a US naval officer during the American Civil War who was killed after the war during an attack on Formosa.

The MacKenzie was laid down at the Union Iron Works, San Francisco, on 4 July 1918, launched on 29 September 1919 and commissioned on 25 July 1919.

At the start of 1920 she was flagship of the 22nd Destroyer Division (USS Rizal (DD-174), USS Renshaw (DD-176), USS O'Bannon (DD-177), USS Hogan (DD-178), and USS MacKenzie (DD-175). She served with the Pacific Fleet along the west coast for nearly three years, before being decommissioned on 27 May 1922.

The MacKenzie was recommissioned on 6 November 1939 as part of the expansion of the US Navy after the outbreak of the Second World War. In 1940 she was chosen as one of fifty destroyers to be given to the Royal Navy under the 'destroyers for bases' deal. On 24 September 1940 she was decommissioned from the US Navy at Halifax and commissioned into the Royal Canadian Navy as HMCS Annapolis.

As HMCS Annapolis

The Mackenzie was the only one of the seven Town Class destroyers that went to Canada to actually be named after a town, becoming HMCS Annnapolis. The other seven were named after rivers.

The Annapolis was converted into a long range escort. She had boiler no.4 removed after burning out, and a new open bridge built on top of the existing US bridge. 

The Annapolis operated with the Halifax and Western Local Escort Forces and was used to escort convoys from St. Johns,Newfoundland, to New York.

In April 1944 she became a training ship and was based at HMCS Cornwallis, a training base near Annapolis, Novia Scotia. She performed that duty until the end of the war.

On 4 June 1945 she was handed over to the War Assets Corps to be disposed of, and they sold her to Frankel Bros of Toronto to be scrapped.

Displacement (standard)


Displacement (loaded)


Top Speed

35kts design
34.81kts at 27,350shp at 1,236t on trial (Kimberly)


2 shaft Parsons turbines
4 boilers
27,000shp design


2,500nm at 20kts (design)

Armour - belt


 - deck



314ft 4.5in


30ft 11.5in


Four 4in/ 50 guns
Twelve 21in torpedo tubes in four triple mountings
Two 1-pounder AA guns
Two depth charge tracks

Crew complement


Laid down

4 July 1918


29 September 1919


25 July 1919

Disposed of

4 June 1945

U.S. Destroyers: An Illustrated Design History, Norman Friedmann . The standard history of the development of American destroyers, from the earliest torpedo boat destroyers to the post-war fleet, and covering the massive classes of destroyers built for both World Wars. Gives the reader a good understanding of the debates that surrounded each class of destroyer and led to their individual features.
cover cover cover

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How to cite this article: Rickard, J (26 April 2018), USS Mackenzie (DD-175)/ HMCS Annapolis ,

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