SU’AO, Taiwan — Taiwan’s president oversaw the commissioning of a new domestically made warship Thursday as part of the island’s plan to boost indigenous defense capacity amid heightened tensions with China.

President Tsai Ing-wen spoke at a naval base in Su’ao, on the island’s east coast, saying the ship “proves that on the path to becoming independent in national defense, no matter what difficulties arise, we can overcome them one by one.”

The ship is known as the Ta Jiang and nicknamed a “carrier killer.” It was built by Taiwanese firm Lung Teh Shipbuilding Company. It’s designed to have air defense capabilities and can carry anti-ship missiles.

It is the first of six of its kind that will be commissioned by the Navy.

Tsai has made boosting Taiwan’s domestic defense industry a priority. She has pushed the military aviation industry with the production of new trainer jets and called for the development of more sophisticated systems by using the island’s high-tech industries.

In addition, Taiwan is producing its own submarine after four years of research and design. It decided to built its own after Beijing successfully prevented it from purchasing such craft from abroad in recent years through the use of economic and diplomatic threats.

China claims Taiwan is a part of its national territory, although the two have functioned independently since a civil war in 1949. China has publicly said it seeks “peaceful reunification” with Taiwan.

China’s Foreign Ministry spokesman Zhao Lijian noted Tsai’s commissioning of the warship, saying “there is no way out for Taiwan’s separatist forces to use military means to confront the mainland.”

In the past few years, Taiwan has faced increasing harassment from China, which has sent fighter jets flying toward the island on a near daily basis.

On Sunday, China’s People Liberation Army sent 19 fighter jets toward the southwestern part of Taiwan’s air defense identification zone, the island’s Defense Ministry said.

In August, the PLA conducted live assault drills with a squad of fighter jets, anti-submarine aircraft and combat ships.

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