January 28th - On This Date - RN Submarine Service

1943	X8	Submarine HMS X8 completed
1906	B4	Submarine HMS B4 completed
1918	H21	Submarine HMS H21 completed
1918	P514	Submarine HMS P514 launched
1919	L20	Submarine HMS L20 completed
1941	Urchin	Submarine HMS Urchin completed
1941	P33	Submarine HMS P33 launched
1941	HMS Rorqual	HMS Rorqual lays mines off the Adriatic coastal port of Ancona
1941	HMS Upholder	HMS Upholder torpedoes and damages the German transport Duisburg south of the Kerkennah Shallows.
1942	HMS Thorn	HMS Thorn torpedoes and sinks the Italian tanker Ninuccia off Cape Planka, Yugoslavia.
1945	HMS Thrasher	HMS Thrasher sinks three Japanese sailing vessels with gunfire of the west coast of Siam.
1946	HMS Sidon	Taken in hand at Portsmouth for repair to armaments. Completed 9th March 1946.
1958	HMS Montclare	Left Portsmouth under tow to be broken up at Inverkeithing

SAB