Which country commissioned its first submarine base at Pekua in Cox’s Bazar? 

Bangladesh Prime Minister Sheikh Hasina inaugurated the first submarine base of Bangladesh ‘BNS Sheikh Hasina’ at Pekua in Cox’s Bazar.  The newly commissioned submarine base would help navy increase its operational capacity to secure the vast marine resources. Ships passing through the Bay of Bengal also can take help from the base.  Two submarines were added to the fleet of Bangladesh Navy in March 2017 which has turned it into a three dimensional naval force.  The Government of Bangladesh signed an agreement with China in September 2019 for the construction of the submarine base. The groundbreaking function was held in February 2021.