The Green List

all the big little things we have done for a sustainable future. so far.

Hi and welcome to the greenest site you ever seen, The Green List!

Here you will find the big little things that we have done on our journey towards a sustainable future. Actually they are so many that they didn't fit on one page...

Click here to read the first 30 sustainable big little things

Set a record in material recycling

Our ports have really increased material recycling. Last year 33% of waste plastic, metal, paper and glass was material recycled, while an additional 44% was used for energy recycling. This is an all-time high!

Installed more shore power

During 2018 we connected our 14th vessel to green shore-side electricity. By having 14 “connected ships” we reduce CO2 emissions with close to 14,000 tons/year. This is equivalent to the annual emissions of 7,500 passenger cars.

Minimized single use plastic

On the Irish- and North Sea, we removed or replaced close to 90 % of all single use plastic products during 2018. Another small step to protect life below water.

Started to use AI to save fuel

We have developed an artificial intelligence-model that suggest the most fuel-efficient way to perform each sailing. The model will help our captains and officers to sail smarter and reduce fuel consumption

Installed new cooling refrigerants

In 2018 all the cooling refrigerants in fridges and freezes on Stena Jutlandica were replaced with new, more energy efficient and climate friendly products. Just like the old ones, the new cooling refrigerants have zero ozone depletion potential. The big difference lies in the low global warming potential.

Became ISO certified

Early 2018 we passed certification for ISO 14001:2015, an international standard for environmental management systems and a tool for the company to improve in the sustainability field.

Started pilot testing ultrasonic antifouling

Early 2018 we equipped our first vessel, Stena Hollandica on the Hoek van Holland to Harwich, with ultrasonic transducers on the hull to minimize fouling.

Increased onboard use of Eco-label detergents

We always strive to minimize our impact on marine life, for example by practising safe use of Eco-label detergents on board. We have courses in handling and dosing detergents, as well as using closed dosing systems, making the handling safer for our employees and simultaneously minimizing consumption. In 2018 we doubled the use of Eco-label detergents to 60 %, mainly by making it our new standard on the North Sea and Irish Sea.

Installed more scrubbers

In 2018 Stena Scandinavica on the Gothenburg to Kiel route was our sixth vessel to be equipped with closed looped scrubbers, a system that cleans up exhaust gas using sea water.

Stopped wasting our food oil

Oil from our kitchens on board is recycled and used for a variety of purposes. In the UK it’s turned into biofuel, while the Scandinavian oil is turned into new raw material for the chemical industry such as soap and plastic.

Started pilot testing paper bags

Plastic turned to recycled plastic and recycled plastic turned to sugar canes. In 2018 we started writing yet another chapter for our onboard shopping bags, as paper was taken introduced onboard our ships.

Started experimenting with battery power

Early 2018 we kicked off a new battery-power project by installing batteries to Stena Jutlandica on the Gothenburg to Frederikshavn route. Initially the batteries will power the ship’s thrusters, used to maneuver the vessel in to port. The next step is to run our main engines on battery power on short, inshore distances in close proximity to cities. And then who knows? In a not-too-distant future, hopefully this is how our ferries are run altogether.

Served better seafood

In order to help preserve wildlife in the ocean we want to make sure all our seafood is caught responsibly. In 2017 the percentage of MSC certified fish served on board was 66 %, steadily nearing the long-term goal.

Completed our 300th energy-saving project

Stena Line’s Energy Saving Program (ESP) was launched in 2006 in line with our goal to reduce fuel consumption by 2,5 % per year. Eleven years later, as the main-engine regulators of Stena Scotia were replaced, project number 300 was completed, resulting in an expected annual fuel saving of 3 % on her sailings between the Netherlands and UK.

Tried some sweet new packaging

In the process of phasing out plastic food containers on board, we started pilot testing some different alternatives in 2017. One of them is bagasse, a biodegradable by-product from sugar production that when composted turns into soil in only eight weeks.

Digitalized our tug masters

In 2017 we connected all light port vehicles digitally to be able to follow, analyze and plan their loading in a more efficient and energy saving way.

Switched to green lights

LED lights lower energy consumption by 5 %, have a life span of five years and are also easier to replace. Our vessels, terminals and ports are gradually moving over to such alternatives. In 2017 we changed more than 2,500 light bulbs in the corridors on board the four vessels that sails from Hoek van Holland.

Lowered sulphur emissions with 15%

In 2017 we started running all of our RoRo vessels on the Irish Sea on low-sulphur fuel, drastically lowering sulphur emissions for our entire fleet.

Discovered salt water!

As a way to help minimizing our impact on life below water, we started pilot testing ECA water. This new type of detergent is 100 % chemical free, consisting of water and salt only. Our first vessel to try it was Stena Nautica on the Varberg to Grenaa route in 2017, followed by Stena Danica and Jutlandica the year after.

Disposed of our disposable cups

In 2017 all disposable coffee cups on board were replaced with a biodegradable cup made from a combination of paper and corn starch. That’s more than 1,300,000 cups every year, now making a significantly smaller impact on the environment.

Plugged in another port

In 2017, Port of Trelleborg in southern Sweden was added to our list of onshore-power sharing ports. This allowed another two of our vessels to turn off their engines in favor of green electricity while in port, making a total of 13 Stena ships now connected to onshore power. It also helped us treduce carbon dioxide emissions by more than 12,300 tonnes in 2017.

Switched to organic milk

We always aim to use greener and better ingredients in our restaurants and cafés. For example, 100 % of all milk served on board has been organic since 2016.

Painted our terminals green

The percentage of green electricity consumed across our terminals is steadily on the rise. In 2018, as much as 92% came from renewable energy sources.

Found the balance

Finding the right balance between draught at the bow and the stern will affect the total draught hindering the vessel. By loading Stena Scandinavica to make its bow deeper than the stern, we manage to save up to 7 % fuel on the Gothenburg to Kiel route.

Tilted a propeller

Analyzing the Fuel Management System data of Stena Flavia on the Nynäshamn to Ventspils route led to several energy saving changes lowering the fuel consumption and emissions. One of them: a slight tilt of the propeller. Sometimes the smallest things really can make a big difference.

Continued to save fuel with FMS

Following the successful pilot test on Stena Vision in 2012, close to our entire fleet has been equipped with the energy saving FMS upgrade. Late 2017, Stena Scotia sailing from The Netherlands to UK was our 28th vessel to be crossed off the list.

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