Founded in 1968 and absorbed into the SM Group in 2013, Korea Line Corporation is a maritime cargo transport company organized into shipping, trading, mining, and construction segments.
The shipping segment is further divided into bulk carriers, LNG carriers, and tankers; in 2025, segment revenue came to KRW 628.2 billion for bulk carriers, KRW 321.7 billion for LNG carriers, and KRW 52.9 billion for tankers, down 12.5%, 12.3%, and 58.6% year over year, respectively.
As of the end of 2025 the company directly managed 24 vessels, and including subsidiaries Korea LNG (12 vessels), Daehan Shipping (10 vessels), and Changmyung Shipping (5 vessels), the total managed fleet reached 55 vessels.
Major clients include quality domestic and overseas cargo owners such as POSCO, Korea Gas Corporation, and Korea Electric Power Corporation, with whom the company has signed long-term ocean transport contracts to secure a stable revenue structure.
A substantial share of shipping revenue comes from long-term consecutive voyage charter (CVC) contracts, which Sangsangin Securities estimated at around 75% of shipping revenue; under this structure cargo owners bear a large portion of operating costs, giving the company relatively strong earnings protection against fuel-price and freight-market swings.
The trading segment handles steel and ferroalloy import/export, while the mining segment operates an iron-ore mine in Gangwon Province. On the governance side, SM Sangsun secured largest-shareholder status, completing a vertical affiliate structure centered on SM Sangsun, according to industry analysis. In April 2026 Choi Kwan-ho took office as the new CEO for a term running through April 2029.