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Ship Name and Designation History

This section lists the names and designations that the ship had during its lifetime. The list is in chronological order.

    Mount McKinley Class Amphibious Force Flagship
    Keel Laid July 31 1943 as Maritime Commission type (C2-S-AJ1) hull
    Launched September 27 1943 as CYCLONE
    Name changed December 12 1943
    Acquired by U.S. Navy December 27 1943

    Commissioned Amphibious Force Command Ship (AGC) May 1 1944

    Redesignated Amphibious Command Ship (LCC) January 1 1969
    Decommissioned March 26 1970

    Struck from Naval Register July 30 1976
    Sold September 22 1977

Naval Covers

This section lists active links to the pages displaying covers associated with the ship. There should be a separate set of pages for each incarnation of the ship (ie, for each entry in the "Ship Name and Designation History" section). Covers should be presented in chronological order (or as best as can be determined).

Since a ship may have many covers, they may be split among many pages so it doesn't take forever for the pages to load. Each page link should be accompanied by a date range for covers on that page.

  1. Covers Page 1    (1944-69)



This section lists examples of the postmarks used by the ship. There should be a separate set of postmarks for each incarnation of the ship (ie, for each entry in the "Ship Name and Designation History" section). Within each set, the postmarks should be listed in order of their classification type. If more than one postmark has the same classification, then they should be further sorted by date of earliest known usage.

A postmark should not be included unless accompanied by a close-up image and/or an image of a cover showing that postmark. Date ranges MUST be based ONLY ON COVERS IN THE MUSEUM and are expected to change as more covers are added.
>>> If you have a better example for any of the postmarks, please feel free to replace the existing example.


Postmark Type
Killer Bar Text

Date From
Date To
Thumbnail Link To
Postmark Image
Thumbnail Link To
Cover Image

Post office established April 29 1944 - Disestablished 1970


Locy Type


As AGC-7


Locy Type


As AGC-7


Locy Type
2(n+) (USS)


As AGC-7


Locy Type
2t(n+u) (LCC,USS)


As LCC-7


Locy Type

(Br. #13987)


As AGC-7


Locy Type

(Br. #13987)


As AGC-7
Branch #13987 (POE August 15, 1944) was assigned to the 37th Medical Unit embarked in MOUNT McKINLEY. The branch was transferred to and renamed for the ship on January 15, 1947.


Locy Type


As AGC-7


Locy Type


As AGC-7
Mark from back of cover


Locy Type P
(2z with "TOKYO JAPAN" in bars)


As AGC-7
Listed as "TOKYO BAY" in USCS postmark Catalog


Locy Type
SLKb (71x6)


Unlisted Straight Line




Operation Crossroads
Not ship's cancel


Other Information

MOUNT McKINLEY earned 5 battle stars for World War II
* Western Caroline Islands operation
Capture and occupation of southern Palau Islands, Peleliu, September 6 to October 14 1944
* Luzon operation
Lingayen Gulf landings, January 9 1945
* Leyte operation
Ormoc Bay landings, November 9-29 1944
* Manila Bay - Bicol operations
Zambales Subic Bay, January 29-31 1945
* Okinawa Gunto operation
Assault and occupation of Okinawa Gunto, March 26 to May 22 1945

Earned 8 battle stars for Korean War service
* North Korean Aggression
July 17-24 1950
September 18 to November 2 1950
* Communist China Aggression
November 3 1950 to January 24 1951
* Inchon Landing
September 13-17 1950
* First UN Counter Offensive
January 25 to March 17 1951
* Communist China Spring Offensive
April 29 to May 1 1951
* Second Korean Winter
April 9-13 1952
* Korean Defense Summer-Fall 1952
May 2-5 1952
June 8-14 1952
June 19 to July 23 1952
September 1-2 1952
November 25-30 1952
* Third Korean Winter
December 1-2 1952
January 5-7 1953

Earned 3 campaign stars for Vietnam War service
* Vietnamese Counteroffensive
June 29-30 1966
* Vietnamese Counteroffensive - Phase II
July 1-6 1966
* Vietnamese Counteroffensive - Phase III
July 28 to August 4 1967
August 17 to September 4 1967
September 9 to October 12 1967
October 26 to November 16 1967

Awards, Citations and Campaign Ribbons...
Navy Unit Commendation - Navy Meritorious Unit Commendation - Navy Expeditionary Medal (1-Cuba) - American Campaign Medal - Asiatic-Pacific Campaign Medal (5) - World War II Victory Medal - Navy Occupation Medal (with Asia clasp) - National Defense Service Medal (2) - Korean Service Medal (8) - Armed Forces Expeditionary Medal (1-Lebanon, 1-Cuba, 6-Vietnam) - Vietnam Service Medal (3) - Republic of Vietnam Gallantry Cross Unit Citation (6) - United Nations Service Medal - Philippine Liberation Medal - Republic of Korea War Service Medal (retroactive) - Republic of Vietnam Campaign Medal

NAMESAKE - The highest mountain in North America, elevation 20,269 feet, located in south‑central Alaska



If you have images or information to add to this page, then either contact the Curator or edit this page yourself and add it. See Editing Ship Pages for detailed information on editing this page.


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