AYK Energy will supply a 6,758-kWh battery system for MV Yampu, the 11,000-dwt diesel-electric self-unloading bulk carrier being built in China for CSL Australia under a contract held by Finland's Wärtsilä, the UK-based battery maker said in an email statement on Tuesday, 5 May 2026.
The pack will form the core of Yampu's hybrid diesel-electric configuration, with about half of the vessel's energy demand expected to come from shore power and onboard storage. The design leaves open a later move to fully electric operation.
Yampu is intended for South Australia's limestone trade and will replace MV Accolade II. The Australian-crewed vessel is owned and operated by CSL and is under construction at Jiangjiang Nanyang Shipyard in China. CSL and construction-materials producer Adbri named the vessel on 12 March, with Marie-Josée Guérin serving as godmother. The name Yampu was chosen through an Adbri-wide employee process and comes from the Narungga and Kaurna languages of South Australia, where it refers to dolphins.
AYK Energy, founded in 2018 by Chris Kruger, develops marine battery systems for vessel electrification and offshore applications. Wärtsilä is a Finnish technology group supplying marine and energy systems including propulsion, hybrid and lifecycle solutions. CSL Australia, part of Canada Steamship Lines, operates bulk shipping services for industrial cargoes in Australian coastal trades.
Key Takeaways:
1. AYK Energy will supply a 6,758-kWh battery system for CSL Australia's MV Yampu bulker.
2. The deal sits under Wärtsilä's broader contract with CSL as a subcontracted equipment package.
3. The 11,000-dwt hybrid diesel-electric vessel is under construction at Jiangjiang Nanyang Shipyard in China.
4. About half of the ship's energy demand is expected to come from shore power and onboard storage.
5. Yampu is intended for South Australia's limestone trade and will replace MV Accolade II.
