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How a shipowner gained actionable insight into their carbon emissions using Spinergie’s Activity-Indexed CII

Find out how Spinergie’s Activity-Indexed Carbon Intensity Indicator (CII) helped a vessel manager access actionable insights that helped them shape strategy and accurately compile ESG reports.

In the ever-dynamic Maritime Sector, monitoring carbon emissions is more than just a compliance necessity; it's a commitment to a sustainable and environmentally responsible future. Spinergie's client required a game-changing solution that would provide them with precise, easy-to-access carbon emissions data. This data is the key to helping our client shape strategic decisions and take the lead on green shipping practices. 


Spinergie's client, a US-based vessel manager with global coverage and a fleet that includes Platform Supply Vessels (PSV), Fast Support Vessels (FSV), and Anchor Handling Towing Supply Vessels (AHTS), wanted to be able to use data gathered from an adapted Carbon Intensity Indicator (CII) within the Smart Fleet Management (SFM) solution for granular fleet emission analyses. 

The maritime industry has a need for a universal CII as the IMO's CII regulations only apply to vessels over 5,000 gross tonnes. Currently, there are multiple ways to calculate CII, perhaps too many. Still, a solution like Spinergie’s SFM is required to evaluate consumption with and without sensors on board for accurate calculation. Spinergie has been working to fulfill the industry need for an offshore-specific CII. With a fleet that predominantly falls outside this tonnage parameter, the client, in its commitment to improving fuel efficiency and reducing emissions, worked alongside Spinergie to create a CII calculation that would apply to the offshore fleet.

With this data now in hand, the client required additional analytics tools that would help them improve their emissions performance and give them the accurate data necessary for ESG reporting. They wanted to see year-on-year comparisons among other granular comparative analyses throughout their fleet of vessels.


Vessel managers are under growing pressure to meet stricter environmental regulations and customer and investor demands for more transparency in the carbon emissions of their fleets. It is unavoidable that the maritime sector currently accounts for a significant portion of global CO2 emissions (3% of global greenhouse gas emissions, according to the European Commission in 2022). So, vessel managers must be equipped with the tools to access the data that will help them make sustainable changes within their fleet. 

Gathering accurate carbon emissions data is especially complicated in the OSV sector. Existing tools available in the market don’t account for their unique specifics, or if they do, the data is difficult to decipher and challenging for vessel managers to use this analysis to create actionable insight or report with confidence.   

Spinergie’s digital platform, Smart Fleet Management, applies a methodology that calculates CII for each activity mode of an offshore vessel. By consolidating these ratings using standardized utilization weighting, the method isolates the influence of varying operating profiles and utilization rates across the offshore industry to provide an accurate baseline. Without this, the CII scores become moving targets primarily influenced by changing market conditions, masking any actual improvements or setbacks.

Once able to benchmark vessels by CII, the inclination is to then be able to drill down into each vessel to understand the operational behaviors driving the result. Some high scores may be justifiable, but sometimes, there are obvious behaviors that can be addressed to make a big impact. An integrated fleet management platform can enable this root-cause analysis.

Spinergie’s Smart Fleet Management Solution

Spinergie’s Smart Fleet Management solution now has the Activity-Indexed CII feature, tailored for use in the OSV sector to help vessel managers gather and analyze their carbon emission data. 

The Activity-Indexed CII module offers a composite view of the Carbon Intensity Index (CII) across an entire fleet to provide users with an at-a-glance clear overview of their environmental footprint. Vessel managers can use it to benchmark and compare vessels, gain further understanding of the carbon impact of individual activities, and extract specific data for ESG reporting. Combined with data from integrated high-frequency fuel sensors, Spinergie’s activity-based calculations, specially adapted for OSVs, offer an undistorted emissions benchmark for the offshore industry. 

Smart Fleet Management users can view the Activity-Indexed CII in multiple ways to suit their needs. Data is broken down into three main categories: ashore, transit, and working, which are then shown on a monthly, quarterly, or annual basis. It is also possible to compare vessels alongside each other to better understand the composition of different categories and what impacts their performance.

Activity Indexed CII details dashboard

Advanced filters allow for even deeper analysis. Users can view the analysis monthly, with further filtering by vessel types or data based on vessel activity status. With intuitive page components, the solution presents an overview for selected periods with detailed CIIs for each vessel.

Carbon indicator dashboard


Using Spinergie's Activity Indexed Carbon Intensity (CII) feature, the client gained a holistic and precise understanding of their environmental impact, extending far beyond compliance and regulatory mandates. With this data and analysis, clients can proactively strategize and optimize their operations to reduce emissions, minimize their carbon footprint, and transition towards eco-friendly shipping practices. In addition, while ESG reporting is becoming increasingly important, access to the Activity Indexed CII can give clients the accurate data they need to bolster their environmental communications.

Read more about how Spinergie’s carbon intensity and fuel consumption analysis is helping clients in their decarbonization journey in our white paper on the topic, then contact our team for a demo to find out how our Smart Fleet Management solution can help you make sustainable change.  

Published on
November 7, 2023
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Sarah McLean
Marketing Content Writer

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