Taiwan’s First Indigenous Submarine Hai Kun Completes Sixth Sea Trial Taiwan’s first domestically built submarine, Hai Kun (Hull 711), has successfully completed its sixth sea trial off Kaohsiung. The trial focused on sonar systems, propulsion performance, and underwater speed, bringing the submarine closer to operational readiness. This milestone highlights Taiwan’s growing self-reliant defense capabilities and its advancing expertise in indigenous submarine development. #TaiwanNavy #HaiKunSubm

Taiwan's first domestically-made submarine prototype, known as the Hai Kun, has been spotted floating in a harbor in southern Taiwan, reportedly undergoing testing. | TaiwanPlus News