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Why depth defines everything

Dec 12, 2025 1:20:55 PM / by Jeroen Romijn posted in Defense & Security

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Every sonar engineer knows that signal clarity begins with the cable. But in naval defense, not all sonar systems are created equal. And neither are their cables.

 

At DeRegt, we’ve spent decades helping navies and defense engineers turn hydrodynamic challenges into predictable performance. In this article, we explore two main sonar architectures: Towed Array Sonar and Variable Depth Sonar. And how depth, buoyancy, and cable mechanics reshape what’s possible underwater. Because sometimes, being able to detect an enemy is just a matter of a few grams per meter, or the right cable design.

 

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Subsea cables: a strategic link for mission success

Dec 12, 2025 1:12:49 PM / by Jeroen Romijn posted in Defense & Security

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Subsea operations are expanding rapidly, from offshore energy and marine science to defense and security. No matter the mission, one component often determines whether a project succeeds or fails: the subsea cable. Far more than just a connection, it transmits power, data, and control, while also carrying mechanical loads in harsh and unpredictable environments. Selecting the right cable is not simply a technical decision; it is a strategic one.

 

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Testing & Validating Subsea Cable Specifications

Dec 12, 2025 1:12:05 PM / by Jeroen Romijn posted in Remotely Operated Vehicles, Energy, Defense & Security

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Discover how to turn theory into proven performance under pressure. We've also designed this blog post for an optimum user experience: first, read this blog post in less than 5 minutes, then decide if you want to download the ebook (30-minute-read).

 

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How to find the right termination solution for your subsea equipment

Dec 12, 2025 1:09:54 PM / by Jeroen Romijn posted in Remotely Operated Vehicles, Energy, Defense & Security

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If you’ve ever worked on a subsea project, you’ve probably seen it happen: Two world-class pieces of technology, flawlessly designed, but they never perform as expected once deployed. Why? Often, the weakest link isn’t software, electronics, or hydraulics. It’s the cable termination. That small interface between the umbilical and the equipment carries everything: power, data, tension, and trust. And when it’s not engineered to the same standard as the rest of the system, the deep sea has a way of reminding you. Fast.

 

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Deeper, Faster, Quieter: What Fairings Can Do for Your Cable

Jun 23, 2025 9:48:00 AM / by Dino Hajdarbegovic posted in Energy, Defense & Security

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Introduction

Whenever something moves through water—whether it's a submarine, a sonar system, or a seismic streamer—it has to deal with water resistance. This resistance, known as hydrodynamic drag, affects not only the towed equipment but also the cable that connects it. That drag can slow things down, cause wear, or make it harder to reach the desired towing depth.

To counter these effects, engineers use something called cable fairings. These are smart add-ons that improve the flow of water around the cable, making operations smoother, faster, and more efficient. In this article, we’ll break down what cable fairings are, how they work, and which types might be right for your specific mission.

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How to Select the Best Subsea Cable Termination

Jan 31, 2025 2:31:48 PM / by Jeroen Romijn posted in Energy, Defense & Security

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Decoding the Importance of Subsea Cable Terminations

In the dynamic world of marine operations, the role of subsea cable terminations cannot be overstated. These crucial components serve as the lifeline between sophisticated underwater equipment and surface support systems, ensuring seamless data transfer and power supply. Whether you're dealing with naval defense, offshore renewables, or seismic exploration, the effectiveness of your subsea operations hinges on well-designed cables and their terminations. They offer a reliable, efficient interface that allows for easy connection and disconnection, which is particularly beneficial during equipment transportation or maintenance. Understanding the intricacies of these terminations not only enhances operational efficiency but also extends the equipment's longevity under the harsh conditions of the marine environment.

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Seeing the Subsea World Differently: How Fiber Optics Transform Cable Performance at Depth

Feb 7, 2024 9:18:10 AM / by George Brandenburg posted in Remotely Operated Vehicles, Energy, Defense & Security

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What really happens inside your cable when the ocean starts pushing back.

 

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Your Guide to Subsea Cable Installation to Maximize Performance (Part 2 of 2)

Jun 15, 2023 10:29:38 AM / by Mario Boot posted in Remotely Operated Vehicles, Energy, Defense & Security

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One of the key elements of working with dynamic subsea cables is installing it onto a winch. This can be done in various methods, however, it is of utmost importance to execute the process correctly to prevent any potential damage. Your cables play a vital role in your operations, and safeguarding them from harm will help you avoid significant costs and minimize downtime.

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5 Costly Mistakes to Avoid When Handling Subsea Cables (Part 1 of 2)

May 24, 2023 11:50:00 AM / by Mario Boot posted in Remotely Operated Vehicles, Energy, Defense & Security

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Proper handling of subsea cables during installation is crucial to ensure their integrity and longevity. However, without knowledge of the correct handling procedures, it's easy to make mistakes that can lead to costly maintenance and repairs, causing significant downtime. We have a blog series dedicated to providing you with essential information on cable handling, especially during installation.

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Maximise The Lifespan of Your Subsea Cabling With Preventative Maintenance

May 2, 2023 10:11:00 AM / by Mario Boot posted in Remotely Operated Vehicles, Energy, Defense & Security

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Preventative maintenance is a proactive approach to cable maintenance that aims to identify and fix potential problems before they become bigger issues. By detecting and addressing problems early, you can prevent costly downtime and ensure that the cable systems are operating at optimal efficiency.

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