Intro to Marine Fiber Optic Cables
- Ed Sellian
- Feb 28, 2024
- 3 min read
Updated: Feb 29, 2024

The role of marine fiber optic cables is a cornerstone that often goes unnoticed by the general public. These intricate networks, lying deep beneath the ocean's surface, are pivotal in keeping our interconnected world running smoothly. Subsea Marine Services (SMS), a veteran in marine fiber optic cable operations and survey services, is dedicated to advancing this crucial infrastructure.
The Backbone of Global Communication
Transmitting nearly 95% of the world's data and voice transmissions, Marine fiber optic cables are the unsung heroes of international communication. This incredible system spans hundreds of thousands of miles, connecting continents and enabling the rapid exchange of information that defines our modern era.
Understanding Fiber Optic Technology
At its core, a fiber optic cable is composed of a bundle of glass strands, each thinner than a human hair. These strands are capable of transmitting data at the speed of light, using a method known as total internal reflection. Unlike traditional copper cables, fiber optics offer higher bandwidth and are less susceptible to electromagnetic interference, making them ideal for long-distance and high-capacity data transmission. While this is a generalized explanation, it's important to note that there are various types of submarine cable, each engineered to meet specific environmental and functional requirements, ensuring reliable performance under varying underwater conditions.
The Unique Challenges of Marine Fiber Optics
Laying and maintaining these cables in the harsh marine environment presents unique challenges. The process begins with meticulous route planning, taking into account various geological and environmental factors. This is where Subsea Marine Services excels, combining our expertise in oceanography, geology, and marine technology to identify optimal routes that minimize environmental impact and maximize cable longevity.
Once a route is determined, specialized vessels such as our very own MV Angel lay the cable along the ocean floor. This task requires precise navigation and handling, as the cables must traverse varied terrain, from shallow waters to deep ocean trenches. Our team of experts, state-of-the-art equipment, and fleet of specialized vessels ensure that each phase of the deployment is executed flawlessly.
Maintenance and Repairs: Ensuring Reliability
One area where SMS particularly excels is cable maintenance and remediation. These operations are of critical importance to the longevity of cable systems. Despite their robust design, they are vulnerable to natural hazards such as earthquakes, underwater landslides, and even human activities like fishing and anchoring. Subsea Marine Services provides rapid response teams equipped with advanced diagnostic tools to locate and repair faults efficiently, ensuring minimal disruption to global communications.
Innovations in Cable Design
As our increasingly digital world continues to evolve, so too will our submarine cable systems. Recent advancements in fiber optic technology have led to the development of cables with higher data-carrying capacities. Innovations such as multi-core fibers and new types of optical amplifiers are pushing the boundaries of what these cables can transmit, paving the way for a future of even faster and more reliable global communications.
Environmental Considerations
As stewards of the marine environment, we prioritize the ecological impact of our operations. Our teams work closely with environmental experts to ensure that our activities have minimal impact on marine life and ecosystems. This commitment extends to the entire lifecycle of the cables, from deployment to eventual decommissioning.
The Role of Subsea Marine Services in the Industry
With 40+ years of industry experience, we pride ourselves on our ability to provide marine fiber optic cable operations and survey service excellence. We offer seamless contractor/subcontractor relationships and deliverables that exceed expectation. Our multidisciplinary approach, combining expertise in marine engineering, oceanography, and environmental science, positions us uniquely to tackle the complex challenges of this field.
Expertise in Survey and Installation
Our comprehensive survey services are the first step in any successful cable installation project. Utilizing advanced sonar technology, ROVs (Remotely Operated Vehicles), and more, we gather detailed data about the seabed and marine environment. This information is crucial in designing cable routes that are both efficient and environmentally sound.
Commitment to Training and Development
We believe that our team's expertise is our greatest asset. Subsea Marine Services invests heavily in training and development, ensuring that our staff is equipped with the latest knowledge and skills. This commitment to excellence is reflected in the quality and reliability of the services we provide.
Looking Ahead: The Future of Marine Fiber Optics
The future of marine fiber optics is bright, with new technologies and innovations on the horizon. As global data needs continue to surge, Subsea Marine Services remains committed to advancing the field, ensuring that our underwater cable networks are not only a testament to human ingenuity but also a sustainable and responsible choice for the future.
In conclusion, marine fiber optic cables are a vital component of our global communication infrastructure. As we continue to navigate this exciting industry, we invite you to join us in exploring the depths and contributing to a more connected world.