The First Domestically Manufactured Taiwanese Submarine: A Deep Dive

The First Domestically Manufactured Taiwanese Submarine: A Deep Dive
Taiwan’s first domestically manufactured submarine, the Hai Kun (SS-711), has recently entered the water for its inaugural sea trials. This groundbreaking development marks a significant milestone in Taiwan’s naval capabilities and strategic defense posture.

In this article, we’ll delve into the details of the Hai Kun, exploring its design, capabilities, and the broader geopolitical context in which it operates.

The First Domestically Manufactured Taiwanese Submarine: A Deep Dive


Taiwan’s decision to pursue the development of its own submarines stems from a combination of strategic imperatives and geopolitical realities. The island nation, situated in a region of complex maritime disputes, faces growing challenges from neighboring powers, particularly China. Beijing’s assertive maritime expansionism, underscored by its rapid naval buildup, poses a direct threat to Taiwan’s security and sovereignty.

The Hai Kun: A Closer Look

The First Domestically Manufactured Taiwanese Submarine: A Deep Dive

The Hai Kun, a diesel-electric submarine, is the first of eight hulls planned to revitalize Taiwan’s aging submarine fleet. The vessel, constructed by Taiwan’s China Shipbuilding Corporation (CSBC Corp.), represents a significant leap forward in the nation’s naval capabilities. Let’s explore some key features of the Hai Kun:

1. Torpedo Tubes

At the front of the hull, six openings conceal 533 mm torpedo tubes, the submarine’s main armament. These tubes can accommodate Mk 48 torpedoes, Harpoon anti-ship missiles, and sea mines.

2. Cylindrical Array Sonar (CAS)

The CAS, situated in the forward part of the submarine, serves as the primary acoustic sensor suite, providing a panoramic view of surrounding contacts.

3. Acoustic Interception Assembly

Located atop the hull, this mast-shaped assembly is used to locate, process, and display intercepted active sonar transmissions and transient acoustic events.

4. Passive Ranging Sonar (PRS) and Flank Sonar

The PRS, positioned on the hull’s upper section, and the flank sonar, protruding further than the rest of the hull, enhance the submarine’s contact classification capacity.

5. Double Hull Configuration

The forward and aft sections of the submarine feature a double hull, while the center pressure hull, housing crew accommodation, is a single hull, optimizing internal space.

Foreign Involvement

Despite being domestically manufactured, the Hai Kun incorporates critical systems supplied by Lockheed Martin, highlighting the international collaboration behind its development. Additionally, aid from at least six other countries has contributed to the submarine’s construction.

Geopolitical Implications

Taiwan’s submarine program is a strategic response to the growing maritime challenges posed by China. As Beijing continues to expand its naval capabilities, Taiwan’s indigenous submarine fleet serves as a crucial deterrent, ensuring the island’s ability to maintain a lifeline to the Pacific during times of crisis.


The Hai Kun represents a significant milestone in Taiwan’s pursuit of a robust naval defense capability. As the vessel undergoes sea trials and prepares for active duty, it underscores Taiwan’s commitment to safeguarding its sovereignty and security in a rapidly evolving geopolitical landscape.


  1. What is the significance of the Hai Kun’s torpedo tubes? The submarine’s torpedo tubes serve as its primary armament, capable of deploying a range of munitions, including torpedoes, missiles, and sea mines.
  2. How does the CAS contribute to the submarine’s capabilities? The CAS provides the submarine with a comprehensive acoustic sensor suite, allowing it to detect and track surrounding contacts.
  3. What role does foreign involvement play in Hai Kun’s development? While the submarine is domestically manufactured, it incorporates critical systems supplied by international partners, highlighting the collaborative nature of its construction.
  4. How does the Hai Kun contribute to Taiwan’s strategic defense posture? The submarine serves as a vital deterrent, ensuring Taiwan’s ability to maintain a lifeline to the Pacific in the face of potential naval blockades.
  5. What does the Hai Kun’s double hull configuration signify? The double hull design enhances the submarine’s internal space, allowing for improved crew accommodation and operational capabilities.