The landing vessel depict on this stamp of Tanzania for the 50th Anniversary of D-Day on the 6th June 1944 is according her No. the US 538, a unnamed landing tank vessel of which many were built.
Watercraft Philately Vol. 42 page 56 gives:
The landing ship USS 538 landed US troops on Utah Beach. The design of Turks and Caicos Is and Tanzania is similar and based on a photograph from the National Archives in Washington, DC, a copy of the photograph is included in D-Day: The Invasion in Photographs.
29 October 1943 laid down at the Missouri Valley Bridge and Iron Co., Evansville, Ind. for the US Navy.
05 January 1944 launched as US 538, sponsored by Mrs. John W. Evans.
Displacement 1.652 tons light and 4.080 fully loaded. Dim. 99.97 x 15.24 x 2.31m. (light draught)’
Powered by two General Motors V-12 engines, original the engines were for railroad use, but she were adapted for marine use, each 900 hp., speed 11 knots.
Endurance 24.000 miles at 9 knots with a load of 3.960 tons.
Armament 2 – 40mm. double mounts, 4 – 40mm. single mounts, 12 – 20mm. single mounts.
Crew 7 Officers and 104 enlisted.
Accommodation for 163 troops.
Carried 2 to 6 LCVP’s.
14 February 1944 commissioned.
After completed she was assigned to the European war zone.
14 March 1944 she sailed from Cape Henry in convoy UGS-36 together with 104 other ships and 12 escort vessels to Europe, during this voyage she carried medical supplies and 125 pontoons with assembles, with a total weight of 810 tons.
During the Normandy landings in June 1944 was she a unit of Force B, which loaded at Falmouth and Plymouth, Force B sailed from Fowey, Hellfort River, Falmouth and Plymouth.
Arrived Western Task Force Area 6th/7th June.
11 June was damaged by a torpedo of a German MTB in position 49 48N 00 31W.
Decommissioned and transferred to the Royal Navy, date unknown.
Commissioned HM LST-538, date unknown.
According the photo on this web-site took she part in Operation Zipper the invasion of Malaya in August 1945.
March 1946 returned to US naval custody.
16 March 1946 struck from the Naval Register.
05 December 1947 sold to Bosey, Philippines, fate unknown.
Many LST were after the war refitted in merchant ship, and Bosey bought many landings vessel.
Tanzania 1994 1000sh sgMS2016, scott1277.
Turks and Caicos Islands 1994 $1.10 sg1275, scott1106
Source: http://www.navsource.org/archives/10/16/160538.htm http://www.history.navy.mil/danfs/119/1st-538.htm The D-Day Ships by John de S. Winter.