# Hanwha Ocean Wins $508 Million Thai Stealth Frigate Program *The South Korean shipbuilder beat five international yards to secure the 16.73 billion baht naval contract, positioning the yard for follow-on Southeast Asian warship orders.* **Published:** September 21, 2026 **By:** Hyun-jung Lee **Section:** Shipbuilding & Defense — South Korea **Format:** Breaking **Confidence:** medium **Source:** https://eastasiabrief.com/shipbuilding/hanwha-ocean-wins-508-million-thai-stealth-frigate-program-337 **Publisher:** East Asia Brief (https://eastasiabrief.com/) --- ## What to know - Hanwha Ocean won preferred status Sept. 19 for a 16.73 billion baht ($508 million) Thai frigate - Deal covers one 4,000-ton OCEAN-40F warship and unlocks up to 3 trillion won in follow-on hulls - Contract negotiation teams are scheduled to conclude final terms by Dec. 31 ![Shipyard workers weld near the hull of a stealth warship under construction as South Korean shipbuilders expand their naval export contracts. (AI-generated image)](https://eastasiabrief.com/media/2026-09-20-877dcbc55ac8.webp) *Shipyard workers weld near the hull of a stealth warship under construction as South Korean shipbuilders expand their naval export contracts. (AI-generated image)* Hanwha Ocean won preferred bidder status on Sept. 19 for Thailand's next-generation frigate program, securing a 16.73 billion baht ($508 million) contract to construct a 4,000-ton stealth warship. The selection gives South Korea's second-largest shipbuilder its first overseas naval export since rebranding under Hanwha Group in 2023. It also establishes a commercial bridgehead for Southeast Asian fleet recapitalization programs. The tender price covers the construction of one frigate alongside an integrated logistics support package. The bid landed 1.6% below the Thai military's procurement ceiling of 17 billion baht ($516 million). The award follows formal evaluation reviews conducted by the Royal Thai Navy procurement committee. Service leadership announced the conclusion of the contest on Sept. 18 at naval headquarters in Bangkok. Hanwha Ocean submitted its proprietary OCEAN-40F design for the tender. The vessel measures 124 meters in length with a beam of 14.4 meters and a maximum operating speed of 28 knots. The design incorporates low-observable hull geometry to minimize radar cross-section signatures. The platform is configured to conduct simultaneous anti-surface, anti-submarine and air-defense missions across regional maritime corridors. The procurement drew submissions from six defense shipbuilders across four nations. Bidders included domestic rival HD Hyundai Heavy Industries, Spain's Navantia, Singapore's ST Engineering, and Turkish state contractors ASFAT and TAIS. Five competing yards were eliminated during preliminary qualification and technical proposal reviews. Thai procurement officials cited documentation non-compliance and unfulfilled baseline engineering requirements for the exclusions. HD Hyundai Heavy Industries proposed a 40% local construction quota during the tender. That proposal failed to overcome structural scoring deficits during the naval evaluation phase. Hanwha Ocean leveraged an established maintenance record with the customer. Its predecessor, Daewoo Shipbuilding & Marine Engineering, built Thailand's flagship frigate HTMS Bhumibol Adulyadej under a 2013 export agreement. That 3,700-ton warship was commissioned into operational service in 2018. Fleet command officials praised the ship's combat availability and commonality advantages during the technical scoring process. Operational familiarity lowered training and technical retooling costs for the naval branch. Retaining compatible combat management architectures avoids costly subsystem redesigns for Thai naval personnel. The procurement marks the initial tranche of a broader naval modernization plan. Bangkok aims to induct up to four new frigates through sequential procurement cycles. Long-term white papers published by the defense ministry outline an eight-frigate fleet target through 2037. Securing the first hull positions Hanwha Ocean to capture follow-on orders worth 3 trillion won ($2.2 billion). South Korean naval shipyards are expanding exports to offset volatile commercial container and gas carrier ordering cycles. Defense sales generate stable operating margins insulated from cyclical commercial merchant shipping charter rates. Naval programs also create recurring lifecycle support revenue. Maintenance, overhaul and systems upgrade packages typically generate double the initial hull value over a 30-year operational life. Southeast Asian navies are accelerating capital ship acquisitions to counter regional maritime security challenges. The Philippines, Indonesia and Malaysia have initiated multi-year surface combatant replacement tenders. Hanwha Ocean's selection tightens South Korea's footprint across regional defense supply networks. South Korean shipyards already supply guided-missile frigates and offshore patrol vessels to the Philippine Navy. Contract finalization will trigger supplier procurement runs for South Korean defense manufacturers. Hanwha Systems and domestic radar vendors are positioned to supply tactical datalinks and electro-optical fire-control systems. Korean specialized component builders will supply reduction gearboxes, shaft lines and propulsion machinery. Subcontracting packages for domestic defense suppliers will begin distribution once definitive contract milestones are signed. The Royal Thai Navy has not published the final contract signing date. Official documents do not state whether Hanwha Ocean agreed to satisfy the military's initial demand for 20% domestic hull construction. Bilateral contract negotiations are scheduled to conclude before the end of the Thai fiscal calendar on Dec. 31. Technical teams will finalize warranty schedules and mission weapon integration clauses before final signature. ## Impact map | Event | Korea | China | Japan | Global impact | | --- | --- | --- | --- | --- | | Thai frigate tender award | Hanwha Ocean secures $508 million export order, opening a 3 trillion won pipeline | PLAN encounters standardized South Korean combatants along regional sea lanes | Mitsubishi Heavy Industries misses out on Southeast Asian escort ship procurement | Western yards Navantia and ST Engineering lose Southeast Asian surface warship market share | ## In this story - **Companies:** Hanwha Ocean - **Tickers:** 042660.KS - **Exposed:** HD Hyundai Heavy Industries, ST Engineering, Navantia, Hanwha Systems - **Policy:** Defense Procurement, Export Controls - **Impact:** Order Book, Capex, Supply Chain ## Primary sources 1. haesanews.com 2. hanwhaocean.com 3. aa.com.tr 4. khaosodenglish.com 5. thaipbs.or.th --- Cite as: East Asia Brief, "Hanwha Ocean Wins $508 Million Thai Stealth Frigate Program," September 21, 2026. https://eastasiabrief.com/shipbuilding/hanwha-ocean-wins-508-million-thai-stealth-frigate-program-337