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Making net-zero shipping a reality

Market-leading air lubrication technology.

Empowered by air.

Our Technology

Latest News Fuel savings at scale: How ALS is boosting profitability for Chinese cruise

200 +

Vessels

The number of vessels with Silverstream ALS system onboard in service

5 bn

Fuel dollar savings

Amount of fuel saved across the in service fleet averaged across fleet and sectors expected operational profiles

20 m

Tonnes of Co2

Amount of CO2 reduced from the fuel savings

2 bn

Carbon tax dollars

The potential Carbon tax the in-service fleet would pay if they didn’t have Silverstream ALS saving them fuel

At Silverstream, we aim high.

Shipping industry’s decarbonisation ambitions can be advanced with action today. By deploying and scaling our proven air lubrication technology, we strive to transform maritime energy efficiency. We help shipping cut fuel use, emissions, and costs – delivering real savings and driving performance. As the industry moves towards net-zero, we partner with leading owners, charterers, and shipyards to deliver lasting impact — empowered by air.

Our Story

Unlock the benefits of the Silverstream^® System

Our patented and fuel-agnostic Silverstream^® System creates a uniform carpet of microbubbles that cuts frictional resistance between a ship’s hull and the water. This dramatically reduces fuel consumption and associated emissions, delivering between 5-10% proven net fuel and emissions savings, depending on vessel type. Our savings have been verified by independent third parties, including classification societies, academic institutions and shipping industry leaders.

Our Technology

Control and Monitoring System

The Control and Monitoring System (CMS) for the Silverstream^® System comprises the main Control Cabinet, which includes the processing unit, and at least one workstation which is either mounted to the CMS panel or installed in a location defined by the customer. Additional Workstations can be positioned in other locations around the vessel depending on design requirements. The CMS interfaces with the ALS plant as well as shipboard systems. The workstation is the primary Human Machine Interface (HMI) for operation of the ALS. In addition to the main ALS workstation, portable workstations can be connected to the Ethernet control network at locations requested by the owner to act as an additional HMI.

Air Compressors

The ALS utilises a set of low-pressure oil-free volumetric compressors, mostly of the helical screw type, which generate a constant volumetric flow for a given speed of motor operation. Each compressor is powered through a VSD-controlled motor. The compressor speed is controlled by the Silverstream^® System and varies depending on the vessel’s draught and speed.

Each compressor supplies air to two (2) ARUs. The location of the compressors is decided depending on the position of the ARUs, the existing piping arrangements and piping that potentially needs to be installed. They are arranged in such a manner that they are as evenly distributed as possible between the port and starboard sides of the vessel.

Air Release Units

An Air Release Units (ARU) is a proprietary discharge unit that penetrates the hull and releases air fed through the Silverstream^® System pipework into the water stream. As the vessel sails, the ARUs generate a carpet of microbubbles which reduces the vessel’s frictional resistance. The ARUs are built using structural steel, fabricated in accordance with Class requirements. They are arranged in a pattern, determined during the design phase, and are integrated into the bottom structure towards the bow.

Air Balancing Module

The air balancing module is a custom fabricated galvanised steel component for the Silverstream^® System that distributes air from the compressor to both ARU branches. Flanged bosses are welded for the drain valve, level sensor and spares that are blanked to allow for troubleshooting.

Work with the leader in air lubrication

Since 2010, Silverstream has been harnessing the power of air to drive decarbonisation in shipping, creating the market for air lubrication.

Today, we are a global multi-award-winning business leading the way with the largest installed base of air lubrication systems. We work with industry-leading shipyards as well as owners and charterers across all major shipping segments, setting the standard for energy savings, safety, and quality.

Talk to an expert

Newbuilds

The Silverstream^® System is simple to operate, and is easy to install on newbuilds. Our goal is to make air lubrication a global standard for all newbuild vessels.

Newbuilds Solution

Retrofits

Our retrofitting projects can typically be completed in 10 days during planned dry dock periods, with the fastest recorded dry dock installation being 6 days.

Retrofits Solution

Aftercare

Silverstream^® Service helps customers unlock the full value of their Silverstream^® System over its lifetime. We provide tailored aftercare solutions to meet individual needs, ensuring reliable uptime and long-term performance.

Silverstream^® Service

Decarbonisation and regulatory compliance

The Silverstream^® System supports compliance with key regulations such as EEDI, EEXI, CII, FUEL EU Maritime and the EU ETS.

We help our customers navigate an evolving regulatory landscape, delivering real emissions savings and future-proofing their fleet.

Regulations & Compliance

EEDI
EEXI
CII
FUEL EU Maritime
EU ETS

Trusted by our industry-leading partners

Global reach

With a global footprint and strong partnerships across the maritime industry, our technology is trusted by leading shipowners and operators, and we work closely with 20 major shipyards worldwide to deliver installations at scale.

Find us at our headquarters in London, our offices in Southampton and Shanghai, and at the many global maritime hubs where our projects are delivered.

Silverstream offices
Partner Shipyards
Customers