ONE Symphony Joins 14,000-TEU Fleet as ONE Expands Alternative-Fuel-Ready Newbuildings

Summary

Ocean Network Express (ONE) has named its 13,932-TEU container vessel ONE Symphony in Japan, marking another milestone in its 20-ship newbuilding programme. The vessel, named on 22 October 2026, is designed to accommodate future conversion to ammonia or methanol propulsion. The programme forms part of ONE’s fleet renewal strategy, which also includes a separate order for methanol dual-fuel container ships scheduled for delivery from 2027.

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ONE Symphony Naming Ceremony Held in Japan

Ocean Network Express (ONE) held the naming ceremony for its new 13,932-TEU container vessel, ONE Symphony, in Japan on 22 October 2026. The ship is part of the carrier’s 20-vessel newbuilding programme, which incorporates design provisions for potential future use of ammonia or methanol as marine fuels.

ONE Chief Executive Officer Till Ole Barrelet and Senior Advisor Jeremy Nixon attended the ceremony, alongside representatives from Yusen Logistics, Imabari Shipbuilding and Nihon Shipyard.

The name ONE Symphony reflects the coordination required between different sections of an orchestra. According to the company, it recognises the collaboration between the carrier, its customers, shipbuilders and other operational partners.

ONE’s fleet register records the vessel’s capacity at 13,932 TEUs, with Singapore registration and a 2026 build year. The company has not disclosed its planned commercial deployment or port rotation.

ONE’s 20-Ship Newbuilding Programme

ONE Symphony is part of a series of 20 large container vessels, each designed with provisions for future ammonia or methanol fuel adoption.

According to ONE’s published investment plans, the vessels have capacities exceeding 13,700 TEUs. Their designs incorporate provisions intended to facilitate potential future conversion as alternative marine fuel technologies develop.

The programme is intended to support fleet renewal while retaining flexibility in the choice of future propulsion technologies.

An earlier milestone in the series came in June 2025, when ONE named the 13,900-TEU ONE Singapore at Imabari Shipbuilding’s Hiroshima yard. The vessel was the sixth ship in the 20-vessel programme.

ONE Singapore followed ONE Sparkle, which the carrier identified as its first owned newbuilding, alongside other sister vessels delivered under the programme.

What Does Ammonia- and Methanol-Ready Mean for Container Ships?

The ammonia- and methanol-ready designation indicates that a vessel incorporates design provisions for potential future installation or conversion to alternative-fuel systems. It does not mean the ship is currently operating on either fuel.

ONE’s published explanation describes a classification society’s “ready” notation as recognition that the basic design meets requirements for systems anticipated to be used in the future.

The carrier has also referred to approval in principle, which involves an assessment of a proposed design rather than confirmation that a complete alternative-fuel propulsion system is installed and operational.

The distinction is relevant when assessing the environmental implications of newbuilding investments. Fuel-ready designs preserve the possibility of future conversion, but actual emissions performance will depend on the propulsion configuration, fuel selected and operating conditions.

ONE’s Separate Methanol Dual-Fuel Vessel Programme

Alongside its 20 ammonia- and methanol-ready newbuildings, ONE is pursuing a separate programme involving 12 methanol dual-fuel container ships, with deliveries scheduled to begin in 2027.

The two programmes represent different stages of the carrier’s alternative-fuel investment strategy. While the 20-ship series incorporates provisions for potential future fuel conversion, the 12 methanol dual-fuel vessels are intended to operate using methanol through dual-fuel propulsion systems.

ONE’s published sustainability plans also identify several efficiency technologies for its forthcoming dual-fuel fleet. These include optimised hull designs, waste-heat recovery systems and bow windshields.

Selected vessels are also expected to incorporate air lubrication systems and shaft generators. However, these specifications should not be attributed to ONE Symphony without vessel-specific confirmation.

The naming of ONE Symphony adds another vessel to the carrier’s large-container-ship renewal programme. Its design combines additional container capacity with provisions intended to retain flexibility for future alternative-fuel adoption as marine propulsion technologies and fuel availability evolve.

FAQs

What is the capacity of ONE Symphony?

ONE Symphony has a registered capacity of 13,932 TEUs, placing it in the approximately 14,000-TEU container ship category.

When was ONE Symphony named?

Ocean Network Express held the vessel’s naming ceremony in Japan on 22 October 2026.

Is ONE Symphony powered by ammonia or methanol?

No. The vessel is described as ammonia- and methanol-ready, meaning its design incorporates provisions for potential future conversion. This does not confirm that it currently operates on either alternative fuel.

How many vessels are included in ONE’s alternative-fuel-ready programme?

ONE’s programme includes 20 large container vessels designed with provisions for future ammonia or methanol fuel adoption.

How is ONE’s methanol dual-fuel programme different?

ONE has a separate programme covering 12 methanol dual-fuel container ships, with deliveries scheduled to begin in 2027. Unlike fuel-ready vessels, these ships are intended to use methanol through dual-fuel propulsion systems.