Taiwan’s First Domestically Built Submarine Completes Maiden Underwater Trial
Taiwan has completed the first underwater sea trial of its first domestically built submarine. The trial took place on Thursday off the southern port of Kaohsiung.
Taiwan’s state-owned shipbuilder CSBC Corporation said the submarine successfully carried out a shallow-water submerged navigation test, calling the event an important milestone for the indigenous submarine programme.
The submarine, named Hai Kun and also known as Narwhal, is the first vessel built under Taiwan’s plan to develop its own submarines.
The programme aims to build a total of eight boats to modernise the island’s undersea fleet.
Taiwan has made the submarine programme a central part of its military modernisation as China continues to conduct frequent military exercises around the island. China claims Taiwan as its territory, a claim rejected by Taipei.
The project has used technology and expertise from several countries, including the United States and the United Kingdom.
CSBC said the programme has faced multiple challenges since it began, citing international constraints and external pressure that complicated development.
Hai Kun was originally due to be delivered to the navy in 2024, where it would have joined two older submarines bought from the Netherlands in the 1980s. However, the project has been delayed.
Taiwan has said it hopes to deploy at least two domestically built submarines by 2027, with the possibility of fitting later vessels with missiles.
The first submarine is reported to have cost T$49.36 billion (about $1.58 billion). It will be equipped with a combat system supplied by Lockheed Martin and armed with U.S.-made Mark 48 heavyweight torpedoes.
Hai Kun was unveiled in September 2023 and was described by its builder as Taiwan’s most important domestic defence project in decades.
Although full details have not been released, the submarine is estimated to be around 70 metres long with a displacement of about 2,500 tonnes.
The design is based on Taiwan’s older Hai Lung-class submarines but includes improvements such as cross-form rudders to improve movement in shallow waters.
CSBC said further sea trials and system tests will continue under the supervision of the Republic of China Navy, with support from foreign technical advisers.
Taiwan’s military is much smaller than China’s, which operates aircraft carriers, ballistic missile submarines and advanced fighter jets.
To address this gap, Taiwan has focused on “asymmetric warfare”, using systems such as submarines, drones and truck-mounted missiles.
Taiwan has also increased defence spending. President Lai Ching-te announced in November 2025 that the government would invest an additional $40 billion in defence.
References: Reuters, Firstpost
Disclaimer :
The information on this website is for general purposes only. While efforts are made to ensure accuracy, we make no warranties of any kind regarding completeness, reliability, or suitability. Any reliance you place on such information is at your own risk. We are not liable for any loss or damage arising from the use of this website.
Related Posts
Disclaimer :
The information on this website is for general purposes only. While efforts are made to ensure accuracy, we make no warranties of any kind regarding completeness, reliability, or suitability. Any reliance you place on such information is at your own risk. We are not liable for any loss or damage arising from the use of this website.
Related Articles
Latest News
⚓️ Enhance Your Knowledge. Prevent Accidents. Stay Safe at Sea.
1. eBooks for Engine Department
Master machinery operations, troubleshooting, and safety procedures with expertly written guides tailored for marine engineers. Prevent costly breakdowns and onboard accidents through practical knowledge.
👉 Explore Engine Department eBooks
2. eBooks for Deck Department
Sharpen your seamanship, navigation, and cargo-handling skills with real-world case studies and practical insights designed for deck officers and cadets.
👉Discover Deck Department eBooks
3. eBooks on Electrical Fundamentals & Issues
Understand marine electrical systems, identify potential faults, and prevent onboard electrical failures with step-by-step explanations from industry experts.
4. Pocket Guides for Quick Reference
Compact, handy, and loaded with essential checklists—perfect for on-the-go reference during operations and emergencies at sea.
5. Combo Packs to Save Big
Access multiple expert eBooks at discounted prices. Ideal for professionals seeking complete safety and operational knowledge across various ship departments.
6. Digital Maritime Courses – Learn at Your Own Pace
Upgrade your competence with Marine Insight Academy’s online courses. Learn from industry professionals anytime, anywhere, and become a safer, smarter seafarer.
Subscribe To Our Daily Newsletter
By subscribing, you agree to our Privacy Policy and may receive occasional deal communications; you can unsubscribe anytime.
BE THE FIRST TO COMMENT