OceanWings wingsail fitted to Ultramax MARIA TOPIC in Japanese retrofit

Sources reported the successful completion of an OceanWings rigid tiltable wingsail installation aboard the Ultramax bulk carrier MARIA TOPIC, following a retrofit at TSUNEISHI SHIPBUILDING in Japan.

The vessel has returned to commercial service, the report added, and the completion was described by the parties involved as a significant step in OceanWings’ move from demonstration projects towards regular commercial deployment.

The retrofit

The work was carried out at TSUNEISHI SHIPBUILDING and involved fitting OceanWings’ rigid, tiltable wingsail system to the MARIA TOPIC, an Ultramax-class bulk carrier; the installation is presented as a retrofit to an existing merchant ship rather than newbuild equipment specification.

Completion of the physical installation and the vessel’s return to trading mark the technical handover from shipyard to owner and the start of operational testing and commercial use in ordinary service conditions, according to the report.

Commercial implications

OceanWings’ deployment aboard MARIA TOPIC is being framed as a major milestone in the company’s commercial roll‑out and, more broadly, in the adoption of wind-assisted propulsion by merchant shipping, signalling a shift from trial stages to routine operation aboard trading tonnage.

The case of the MARIA TOPIC therefore serves as an early example of a retrofit pathway for owners considering wind-assist technologies, demonstrating that established shipyards can carry out installations on existing vessels and that such ships can re-enter service following completion.

The successful installation and the vessel’s prompt return to commercial service underline the practical focus of current wind-assist initiatives: translating demonstrator projects into commercially operable systems that can be integrated into the schedules and commercial requirements of working ships.

Sources indicated the announcement, which the shipping sector will watch for further evidence of how readily wind-assisted systems can be adopted at scale across different vessel types and trading patterns.