The ship had been built as River-class frigate HMS Fal for the Royal Navy during World War II and was transferred to the Burmese government in 1947 on loan, and permanently in 1948.

HMS Fal was a River-class frigate of the Royal Navy, built for anti-submarine warfare and convoy escort duty in the Second World War.

She took part in a 25 gun salute along with HMS Birmingham on 4 January 1948 to mark Burma's independence from the British colonial rule.

[1] On 29 August 1948, was transferred permanently to the Burmese Navy as a free gift and she was officially renamed as UBS Mayu.

Following her decommissioning, she was designated as an historic war vessel and has been preserved as a museum ship at Myanmar Naval Training Headquarters, Seikkyi.