Busan-based IOB Co. Ltd. has begun commercial operations with four 174,000-cubic-meter Arc4 LNG carriers and is targeting a fleet of three to six Arc7 vessels by 2026, positioning the newly established South Korean ship manager as a likely operator for Russian Arctic gas cargoes long considered off-limits to Western interests.

The four vessels — North Moon, North Light, North Ocean and North Valley — were built by Hanwha Ocean in 2024 and 2025 for Japan's Mitsui O.S.K. Lines. Shipping databases now show the ships under new ownership arrangements linking Russian gas producer Novatek with IOB, while IOB identifies itself as their technical, marine and crew manager specializing in ice-class tonnage on the Northern Sea Route.

How did the vessels arrive at this point?

The four Arc4s spent months idle before the transition, caught in the crosscurrent of Western restrictions on Russian LNG. The European Union sanctioned North Moon, North Light and North Ocean in May 2025 for their involvement in Russian LNG trades. Brussels removed them from the list two months later after MOL provided assurances the ships would no longer carry Russian energy.

That assurance now sits awkwardly against a transaction that places the same hulls under a Novatek-linked ownership structure, managed by a company whose website declares its focus on Arctic LNG. IOB claims 13 years of accumulated global LNG fleet-management experience behind its new Busan operation.

Where will the Arc7 tonnage come from?

IOB has not identified the Arc7 vessels it intends to manage, but its three-to-six-ship target aligns with a specific pool of stranded tonnage. Six Arc7 LNG carriers — three originally ordered by MOL and three linked to Russia's Sovcomflot — have sat at Hanwha Ocean since sanctions interrupted their delivery to Novatek's Arctic LNG 2 project.

The planned additional Arc7 newbuildings under IOB management from 2028 suggest the Korean operator is building toward a long-term foothold in the ice-class segment, not a one-off transaction.

What is South Korea's wider Arctic strategy?

IOB's emergence fits a broader Korean push into Arctic shipping that now stretches from the shipyard to the operations desk and into the port of Busan. South Korean yards have built much of the specialized LNG tonnage serving Russia's Arctic projects.

In August, PanStar's 2,758-TEU PanStar Acro departed Busan for Europe via the Northern Sea Route in South Korea's first commercial container trial on the route. Only 737 TEU of cargo loaded — roughly 27% utilization — exposing the thin commercial base for the voyage. PanStar has signaled plans for additional Arctic sailings.

What does it mean for shippers and operators?

For Western LNG traders, the IOB-Novatek linkage shows how Arctic LNG flows are migrating into ownership and management structures designed to sit outside sanctions lists. For MOL, the carve-out leaves the Japanese operator facing questions about the durability of its compliance assurances.

For Busan, the bet is that Arctic volumes — in LNG and eventually in containers — will grow enough to justify investment in route infrastructure, ice-class services and crewing.

The trajectory now hinges on whether IOB can secure cargo for its planned Arc7 fleet in 2026, and whether the stranded Hanwha hulls finally find commercial employment after months at the yard.