When did Sulnox announce Spring Marine’s fleet-wide rollout?

Sulnox announced the fleet-wide rollout on 2025-11-03. The announcement follows two years of use and evaluation of Sulnox Eco on some Spring Marine vessels.

What fuel savings has Sulnox reported from Spring Marine’s use of Sulnox Eco?

Sulnox reported that evaluations over two years demonstrated consistent fuel savings averaging 5%. The evaluations also showed reductions in specific fuel oil consumption and evidence of improved engine efficiency.

How were Spring Marine’s fuel savings from Sulnox Eco evaluated?

The vessels were fitted with Coriolis mass flow meters, torque meters and engine performance monitoring systems. Sulnox said these systems enabled evaluations of fuel savings, specific fuel oil consumption reductions and engine efficiency.

Is Sulnox Eco being extended to vessels under charter by Spring Marine?

Yes, Spring Marine is extending Sulnox Eco to a number of vessels under charter. Sulnox said charterers benefit from reduced voyage costs and improved profit margins, while Spring Marine benefits from better charter rates, improved vessel Energy Efficiency Operational Indicator and asset value preservation.

What operational and maintenance benefits did Sulnox report from Spring Marine’s use of Sulnox Eco?

Sulnox reported cleaner combustion components, reduced carbon build-up on piston crowns, rings and grooves, clean injectors, efficiently operating purifiers with minimal sludge and consistently clean exhaust with no visible black smoke. These benefits were reported by onboard crews.

What is Sulnox Eco and how does it affect emissions?

Sulnox Eco is described as a drop-in solution that lowers fuel consumption and supports more complete combustion. Sulnox said this significantly lowers particulate matter, including black carbon, CO2 and other pollutants.

What annual product use does Sulnox estimate for Spring Marine?

Based on current plans, Sulnox estimates that annual Spring Marine product use could reach around 80,000 litres per annum as the rollout progresses. This is an estimate attributed to Sulnox and is not presented as a completed usage level.

What did Spring Marine’s General Manager say about Sulnox Eco?

Captain George Chondronikolas said Sulnox Eco had noticeably reduced fuel consumption and that results remained compelling two years after adoption. He also cited improved engine cleanliness, operational efficiency and lower emissions, and said the product required no capex or time in dry dock.

What did Sulnox CEO Ben Richardson say about the Spring Marine rollout?

Ben Richardson said Spring Marine’s results demonstrated the long-term effectiveness of Sulnox Eco and that sustained improved performance over two years validated the products. He also linked lower fuel consumption and more complete combustion with emissions reductions as the industry faces tighter carbon regulation and rising compliance costs.

How many shipping companies and vessels is Sulnox currently engaged with?

Sulnox said it is currently engaged with c.75 shipping companies with combined fleets of c. 6,000 vessels. The company presented this activity in the context of increasing regulatory and financial pressure on shipping operators to improve fuel efficiency and reduce greenhouse gas intensity.

What pressures does Sulnox identify for the global shipping industry?

Sulnox said the global shipping industry is facing increasing regulatory and financial pressure to improve fuel efficiency and reduce greenhouse gas intensity. It added that carbon pricing and emissions reporting are expected to play a growing role in operating costs.

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Sulnox announces planned fleet-wide expansion with Spring Marine across 28 vessels

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Sulnox Group PLC

AQSE:SNOX
OTCQX:SNOXF

Sulnox announces planned fleet-wide expansion with Spring Marine across 28 vessels

Published Monday, 03 November 2025

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Plain English summaries when Sulnox Group PLC announces news.

At a glance

Company: Sulnox Group PLC
Listings: AQSE:SNOX, OTCQX:SNOXF
Announcement type: Operational update
Published: Monday, 03 November 2025
Source announcement: sulnoxgroup.com

Key figures
Measure	Figure	Period
Fleet	28 Tankers and Bulk Carriers	Not stated
Fuel savings	5%	Over two years
Combined fleets	c. 6,000 vessels	Not stated

Figures are quoted from this announcement and selected automatically.

FAQSIR Generated from this announcement View original release below for safe harbor and regulatory notices

Announcement Summary

Sulnox announced that Spring Marine Group is expanding its use of Sulnox Eco across its entire fleet.

Spring Marine operates a fleet of 28 Tankers and Bulk Carriers.
Spring Marine first introduced Sulnox Eco on some vessels in 2023 and is extending its use to vessels under charter.
Two-year evaluations using Coriolis mass flow meters, torque meters and engine monitoring systems showed fuel savings averaging 5% and SFOC reductions.
Based on current plans, Sulnox estimates annual Spring Marine product use could reach around 80,000 liters per annum as rollout progresses.
Onboard crews reported cleaner combustion components, injectors, efficiently operating purifiers and consistently clean exhaust with no visible black smoke.

Spring Marine said the drop-in solution required no capex or time in dry dock. Sulnox said charterers bear fuel costs and benefit from reduced voyage costs and improved profit margins.

Investor FAQs

Sulnox announced that Spring Marine Group is expanding its use of Sulnox Eco across its entire fleet. Spring Marine operates 28 Tankers and Bulk Carriers and first introduced the product on a number of vessels in 2023.

Source announcement

Company: Sulnox Group PLC
Title: Spring Marine Fleet-Wide Adoption on 28 vessels
Published: Monday, 03 November 2025
Source site: sulnoxgroup.com

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