Taipei, Feb. 26 -- Taiwan will begin sea acceptance testing (SAT) of its first locally built submarine prototype named Hai Kun or Narwhal in April this year as per schedule Taiwan News has reported.

The local news outlet cited military spokesperson Sun Li-fang as rejecting claims that the country's first indigenously built submarine was facing problems with power supply that caused harbour acceptance tests to run behind schedule.

Taiwan's domestic submarine is aimed at bolstering undersea combat capabilities of the island amidst Chinese military pressure and escalating tensions with Beijing. China continues its aggressive military activities near Taiwan with fighter jets and navy vessels patrolling and conducting drills.

Military spoke...