Swedish tanker owner Terntank has entered into a commercial agreement with maritime performance specialist Oversea following a successful trial period involving the company’s Fleet Support Center services.
The partnership will initially cover nine vessels, including Terntank’s latest Hybrid-Plus tankers, while two additional newbuildings scheduled for delivery next year are also expected to join the programme.
Among the vessels included in the agreement, two are equipped with wind-assisted propulsion systems as part of Terntank’s broader strategy to reduce emissions and improve energy efficiency across its operations.
Under the deal, Oversea will provide continuous monitoring, analysis and operational support designed to improve vessel efficiency and environmental performance. The company will work closely with both onboard crews and shore-based teams, delivering operational recommendations and regular performance reporting.
The Fleet Support Center focuses on several key operational areas, including hull and propeller optimisation, main engine efficiency, condition monitoring, auxiliary systems, onboard power generation and Carbon Intensity Indicator (CII) forecasting.
Terntank chief executive Claes Möller said the agreement was the logical continuation of a trial that delivered measurable operational benefits.
“The agreement with Oversea is a natural next step following a trial period that clearly demonstrated the value of their Fleet Support Center services,” Möller said.
He explained that while Terntank’s vessels generate large amounts of technical and operational data, analysing that information internally can be time-consuming.
“Our vessels are technically sophisticated with a lot of data available, but we have limited time to collect and analyse the data we receive from the vessels,” he added.
“In a sense, Oversea will act as our performance division, providing support and monthly updates on hull and propeller, main engine, auxiliaries and CII.”
The collaboration reflects a growing trend within the maritime industry, where shipowners are increasingly relying on external digital performance specialists to manage complex operational data and support compliance with tightening environmental regulations.
For Oversea, the agreement also represents its first commercial engagement within the tanker sector.
Chief executive Jesper Lögdström said the transition from trial phase to a full commercial agreement highlights the operational value created through close collaboration between digital monitoring teams and vessel operators.
“We are very pleased to have moved from a successful trial into a commercial agreement, and grateful for the continued trust and expanded collaboration,” Lögdström said.
“As Oversea’s first engagement within the tanker segment, it is especially rewarding to see how we can deliver clear value and tangible results through close collaboration between the client teams and Oversea Fleet Support Center.”
Terntank has established itself as one of Northern Europe’s more progressive tanker operators in terms of low-emission vessel development. Its Hybrid-Plus series incorporates battery systems, shore power connectivity and energy recovery technologies aimed at lowering fuel consumption and reducing overall emissions.
