By providing ingredient technology to power up the antifouling system

What is Selektope®?

Selektope® is a unique biocide which, through biotechnology is creating the possibility of more sustainable and efficient marine paint systems.

Its powerful, repellent effect on barnacles keeps the ship’s hull clean — which reduces frictional resistance between the ship hull and water, leading to less fuel consumption and emissions to air and sea.

Fouling is a pressing environmental and financial problem.

Prevention rather than cure is I-Tech’s approach to tackling the global issue.

Only with a barnacle free hull can global emission targets be met.

By using the Selektope® biotechnology as an ingredient in the antifouling mix, operators and owners can eradicate hard fouling, ensuring continually clean hulls, optimal business and environmental performance.

Selektope has provided power to antifouling coatings used on over 1000 vessels.


Did you know that, when a hull is covered by 10% barnacle fouling, 36% extra power from the engine is required to maintain the same speed through water.

Prevention against biofouling is vital as vessels idle and sea temperatures rise

The power of Selektope® keeps tanker barnacle free during 63 months of trading on global routes.

Read the case study

Available antifouling coatings containing Selektope® has been used on more than 1000 vessels.

Paint manufacturers

For paint manufacturers

Push the boundaries of coating innovation.

Ship managers

For ship owners & shipyards

Unlock the benefits.

Our customers

A sustainable solution


There are many potential solutions to save energy and reduce the shipping industry´s environmental impact.


Optimal hull performance can save up to 25% for an entire shipping fleet. Selektope® plays an important part in releasing this potential.


Optimised propulsion (engine and propeller control ) has a saving potential of up to 10%.


Route and autopilot optimisations have a saving potential of up to 15%.


A propeller free from marine fouling with an optimal design can deliver savings of up to 8%.


I-Tech, the company behind Selektope®

I-Tech AB is a public held bio-technology company based in Mölndal, Sweden that owns all IP and regulatory rights to the antifouling agent Selektope® (generic name, medetomidine).

Since 2006, I-Tech has successfully transformed the scientific invention of Selektope® into a commercially ready and available antifouling agent.

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Latest News & Blog
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Industry collaboration is key to keeping hulls clean

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12 Apr 2023 insights

The successful journey of Selektope: From lab to hull powered by entrepreneurial spirit and science

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CII takes centre stage at the 2022 Hull Performance and Insight Conference (HullPIC)

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Reflections on Nor-Shipping 2022

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29 Mar 2022 insights

Insights from our time spent on the world’s Largest Hospital Ship

This was a huge deal for us since I-Tech had been working for many years with Mercy Ships Sweden in ...
31 Jan 2022 insights

Looking ahead in 2022

As the industry welcomes in the new year, a wide array of forces that impact the business of interna...
11 Sep 2023 News

Selektope® keeps hull of world’s largest non-governmental hospital ship barnacle-free despite 22-months stationary in biofouling hotspots

The barnacle-repelling antifouling biotechnology, Selektope® has successfully faced its toughest ch...
2 Jun 2023 News

Expert speaker line-up announced for the International Antifouling Conference 2023 

The 2nd International Antifouling Conference will host high-level discussions around current and fut...
2 Jun 2023 News

I-Tech sales in Korea increase by 147% for the first half of 2023 compared to the same period in 2022

I-Tech AB (publ) (ticker: ITECH) sales in the Korean market reached over 32 MSEK during the first ha...

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