Seaspan and Maersk widen containership efficiency drive
Retrofit of four 13,000 teu ships anchors a programme spanning 18 vessels

Seaspan and Maersk are broadening their long-standing relationship with a new vessel efficiency programme covering 18 containerships on long-term charter to the Danish liner operator.
The companies said the effort is aimed at improving fuel efficiency, cargo capacity, operational flexibility and emissions performance across the shared time-chartered fleet. Its centrepiece is a retrofit package for four 13,000 teu vessels.
That work includes shaft generators to cut auxiliary engine fuel use, main engine performance optimisation, a new high-efficiency propeller and pre-swirl device, and preparation for carbon capture. Lashing bridges are being raised to increase box intake and deadweight lifted to improve loading. Together, the measures are expected to reduce slot costs by around 10% to 13%, and completed and planned investment across the 18 vessels now stands at about $75m.
Separately, WattSpan, Seaspan's maritime technology and engineering joint venture focused on vessel performance and decarbonisation, has signed a non-binding memorandum of cooperation with Maersk and COSCO Shipyard. The one-year framework covers vessel upgrades, energy efficiency and decarbonisation technology.
Dimitrios Panagopoulos, chief fleet operations officer at Seaspan, said the partnership showed how practical, high-impact collaboration can advance decarbonisation at scale.


