Subsea markers: what standard testing should you look for?

You’re in the middle of your the procurement process and your asset needs subsea identification markers. How do you make sure you’re choosing the right ones?

At the end of the day, it’s about performance and compliance. Can the marker system deliver everything you need while keeping you compliant with all the relevant legislation?

In this blog, we’ve pulled together a checklist for you to use, detailing the standard testing you should look for when choosing subsea identification markers.


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1. Anti-fouling performance

Put simply, there’s no point to an identification marker that you can’t identify.

Subsea identification markers that quickly become obscured by marine growth aren’t just an inconvenience – they can endanger both people and projects by leading to mistakes in identifying cables, pipes and other key points on your asset.

Make sure the marker system you choose has, meets or exceeds standards for anti-fouling performance for the duration of your project.

2. Durability 💪🏻

Can your ID marker withstand long-term offshore and subsea use?

The marine environment is a harsh one, even without taking into account additional environmental factors such as temperature and tidal currents.

Choose a subsea identification system that’s independently tested on factors including:

  • Damage impact
  • Slam loading
  • Vibration
  • Cathodic protection
  • Salt spray and salinity
  • Environmental factors, including temperature and humidity


quote from blog, white text on black background with underwater sea image in background


3. Fixing security

So you’ve got an anti-fouling subsea marker that’s built to withstand anything the ocean can throw at it.

But what’s the point of an effective marker system if it won’t stay on the asset for as long as you need it to?

Whatever installation or adhesion method you choose for your asset and markers, make sure you have some kind of guarantee that your markers will stay where you need them for the duration of your project.

4. Toxicity ☠️

It’s not just your identification marker and your asset you have to consider when you’re installing something in a subsea environment.

Environmental responsibility and compliance are important points for consideration, so it’s vital to make sure that your marker system doesn’t fall foul of laws on toxicity.

Legislation can vary widely depending on location, so make sure the subsea marker you choose complies with the latest relevant rulings around toxicity in a marine environment.

How does Aquasign stack up?

So sure, we have a vested interest in singing the praises of Aquasign. But one thing we don’t do is make claims we can’t back up.

Aquasign anti-fouling markers are rigorously tested by third-party organisations to make sure they perform exactly how you need them to.

The short version:

  • Anti-fouling performance: Aquasign is guaranteed to remain visible for 60 years
  • Durability: Aquasign exceeds industry standards for a wide range of factors
  • Fixing security: We guarantee that Aquasign will remain in place for 60 years
  • Toxicity: Aquasign is completely non-toxic and qualified for use anywhere in the world

The more detailed version:

How to prepare your standard specification document

Drawing up standard specification documents for a project can be a headache at the best of times.

Don’t make life any harder than it has to be. Our pre-qualification document (downloadable in full from our free-to-access Knowledge Hub) provides details on all testing standards that should be considered when it comes to selecting an underwater marker system.

Read through, learn more about independent testing standards and industry best practices, and make sure your project has the right product for the job.

And, if you want one-to-one assistance, contact us today for a no-obligation chat. We’re happy to help.


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➡️ Related content: read our guide to the different Aquasign installation methods or review our smart silicone marker’s key features for your next project.

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