# integration issues

Delayed Dive: Taiwan’s Indigenous Submarine Finally Submerges, But Major Tests and Integration Problems Remain

Taiwan’s first indigenous submarine, the Haikun, completed its first submerged trial on 26 January 2026 after extensive delays caused mainly by integration problems between its platform management system and onboard sensors and weapons. Remaining snorkel, shallow and deep-depth trials mean full delivery is unlikely before mid-2026, prolonging pressures on Taiwan’s defence modernisation and deterrence posture.