DEEP RESEARCH · LS MARINE SOLUTION

LS Marine Solution: At the Center of Global Energy and Data Supercycles

A J-curve growth scenario driven by offshore wind, subsea communications, and HVDC cable-laying vessels

Published: 2025-08-31 · Company deep dive · Naver Blog

0. Bottom line first

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1. Investment thesis summary

Interpretation: The core point is that LSMS is not a manufacturer that makes cables; it is a high-value service company that installs them under the sea. For customers, installation failure can cause hundreds of billions of won in losses and project delays, so proven installation capability deserves a premium.

2. The dual supercycle: electrification and connectivity

Official fact: Citing market-research firms, the source summarizes global offshore-wind market forecasts of 8.9% to 18.6% CAGR through 2030-2034. It also notes expansion into waters deeper than 50 meters, more than 28.5% annual growth for that deeper-water segment, and a 60.1% CAGR forecast for floating offshore wind from 2025 to 2030.

Official fact: On the data side, the source states that more than 90% of global data traffic is transmitted through subsea fiber-optic cables, and that the subsea cable market is expected to grow at a 5.6% to 11.1% CAGR through 2030.

Interpretation: Offshore wind farms need power cables to move generated electricity to land, and communications networks to control remote assets. The ability to lay power and communications cables together is therefore not just diversification; it is a project-efficiency advantage.

3. Competitive landscape: manufacturing versus specialist services

Interpretation: LS Cable and Taihan Cable are manufacturing-centered companies that mass-produce cables. LSMS is a marine engineering, logistics, and installation-services company that places cables under the sea. This distinction explains the profitability gap between raw-material-exposed manufacturers and a service model centered on cable-laying vessels and specialist labor.

Official fact: In the first half of 2025, LSMS recorded KRW 111.5 billion in revenue, KRW 6.4 billion in operating profit, and KRW 4.1 billion in net profit. The source gives year-over-year growth rates of +114%, +107%, and +8%, respectively, and presents this as the company’s largest first-half result since founding.

4. Customers and project pipeline

LSMS’s growth path has four pillars: internal synergy with LS Cable, Korea Electric Power Corporation’s national-grid investment, large Korean offshore-wind projects such as Anma and Haesong, and expansion into Asian markets including Taiwan and Vietnam.

5. Economic moat: turnkey, entry barriers, and the HVDC vessel

Interpretation: LSMS’s strongest moat is the turnkey solution completed through vertical integration with LS Cable. Developers increasingly prefer one partner that can handle cable manufacturing, transport, and final installation to reduce execution risk. The source frames this as a differentiated capability offered by only a few global players such as Prysmian and Nexans.

Official fact: The new HVDC cable-laying vessel investment totals KRW 345.8 billion. The source says the vessel will have 13,000 tons of cable-loading capacity, making it the largest in Asia and top-five globally, and that only three vessels worldwide have similar specifications. Operation is presented as starting in 2028.

6. Five-year financial outlook and J-curve

Official fact: The outlook is based on the current backlog of about KRW 650 billion and large projects including Anma 532MW, Taean 500MW, Haesong, and Shinan Uui. The source notes that a typical 400-500MW offshore-wind farm can generate about KRW 200-300 billion in installation revenue.

Interpretation: The model is a classic J-curve. From 2025 to 2027, FCF may be negative because of the KRW 345.8 billion vessel investment. After 2028, as CAPEX falls and the new vessel begins generating revenue, FCF is expected to turn positive.

Official fact: The source states that these forecasts are estimates based on brokerage consensus and public investment plans, and that actual results may differ.

7. Investment conclusion and risks

Interpretation: In conclusion, LSMS offers direct exposure to the subsea cable installation market. The post-LS Group turnaround, synergy with LS Cable, large backlog, and HVDC vessel investment could support a revaluation of long-term earnings power.

Key risks

• Project execution and concentration risk: Delays, cost overruns, or cancellations in a small number of large projects can materially affect results. Dependence on orders from LS Cable also needs monitoring.
• Policy risk: Offshore wind depends on subsidies, tax benefits, and permitting. Policy changes in key markets such as Europe, the United States, and Taiwan can slow growth.
• New-vessel investment risk: The KRW 345.8 billion investment is large. Construction delays, cost overruns, or failure to secure high-margin projects after 2028 would hurt returns.
• Macro risk: Higher interest rates raise financing costs for offshore-wind projects, and supply-chain disruptions can affect schedules.