The LINDEN-SPE-7110-1 Hybrid (-054) Buoyant Hybrid Cable is a specialist marine cable designed to provide reliable transmission of optical signals, electrical power, and control data within a single, compact cable construction. Its buoyant design makes it particularly suitable for underwater systems where the cable must remain neutrally supported or float within the water column rather than sink, drag across the seabed, or place excessive mechanical load on connected equipment.

Developed for demanding offshore, subsea, defence, research, and remotely operated equipment applications, the cable combines robust mechanical protection with dependable transmission performance. Its hybrid configuration can be adapted to include optical fibres and electrical conductors according to the requirements of the system.

Hybrid Fibre and Electrical Construction

The LINDEN-SPE-7110-1 integrates multiple transmission functions into one cable assembly. Depending on the final system configuration, the cable may carry:

• High-speed optical data
• Video and telemetry signals
• Electrical power
• Instrumentation signals
• Control and communication data
• Sensor information

Combining these functions within a single cable reduces the need for multiple separate connections. This can simplify subsea system installation, reduce cable management requirements, and minimise the number of potential connection or failure points.

The optical fibre elements support high-bandwidth communication over extended distances while remaining resistant to electromagnetic interference. The electrical conductors provide power or low-voltage control connectivity for connected instruments, sensors, cameras, robotic systems, or other marine equipment.

Buoyant Cable Design

A key characteristic of the LINDEN-SPE-7110-1 is its engineered buoyancy. The cable construction incorporates carefully selected lightweight and buoyant materials that help control its behaviour when deployed underwater.

A buoyant cable may be used to:

• Reduce contact with the seabed
• Minimise snagging on underwater structures
• Reduce drag on moving equipment
• Support free-swimming or tethered systems
• Improve cable positioning in the water column
• Reduce the suspended load placed on subsea equipment

Maintaining the correct buoyancy is especially important in systems where cable movement, bending, drag, and hydrodynamic behaviour can affect the stability or manoeuvrability of the connected equipment.

The final buoyancy characteristics can be engineered according to the operating environment, cable length, deployment depth, attached equipment, and required underwater positioning.

Designed for Dynamic Marine Applications

The cable is suitable for systems where repeated movement, bending, deployment, retrieval, and underwater handling are expected. Its construction is designed to help protect the internal optical fibres and electrical elements from mechanical stresses encountered during operation.

Potential dynamic applications include:

• Remotely operated vehicles
• Autonomous underwater vehicles
• Underwater camera systems
• Marine robotics
• Towed instrumentation
• Oceanographic research systems
• Subsea monitoring equipment
• Diving support systems
• Inspection and survey equipment

The cable structure is developed to balance flexibility with mechanical strength. This allows the cable to move with connected equipment while maintaining reliable signal and power performance.

Mechanical Protection

The internal fibre and conductor components are protected by a layered cable construction intended to withstand demanding marine conditions. Depending on the final specification, the cable may incorporate strength members, protective buffering, water-resistant elements, and a durable external sheath.

These features help protect against:

• Tensile loading
• Repeated flexing
• Crushing forces
• Abrasion
• Water exposure
• Handling damage
• Deployment and retrieval stresses
• Contact with marine equipment

The cable construction is selected to provide adequate protection without creating unnecessary weight or stiffness that could negatively affect buoyancy or equipment movement.

Reliable Optical Performance

The optical fibre section of the hybrid cable provides a secure and high-capacity transmission path for data, video, telemetry, and communication signals. Fibre-optic transmission offers significant advantages in marine environments, including high bandwidth, low signal loss, and immunity to electromagnetic interference.

Optical communication is particularly valuable where sensitive signals must be transmitted close to motors, power systems, generators, sonar equipment, or other sources of electrical noise.

The cable can be configured with suitable fibre types and fibre counts to match the required communication system.

Electrical Power and Control Capability

In addition to optical fibres, the LINDEN-SPE-7110-1 can incorporate electrical conductors for power, control, or instrumentation.

The conductor arrangement may be engineered according to:

• Required voltage
• Current capacity
• Transmission distance
• Signal type
• Equipment power demand
• Electrical isolation requirements
• Connector configuration

This hybrid arrangement enables a single cable to support both communication and power requirements, helping reduce the overall size and complexity of the underwater tether or umbilical system.

Typical Applications

The LINDEN-SPE-7110-1 may be suitable for:

• ROV tether systems
• AUV communication and power links
• Underwater inspection equipment
• Subsea camera and lighting systems
• Oceanographic instruments
• Marine environmental monitoring
• Hydrographic survey equipment
• Offshore energy systems
• Defence and naval systems
• Underwater sensor arrays
• Diving and salvage equipment
• Towed marine devices
• Aquaculture monitoring systems
• Scientific research platforms

Key Benefits

• Combines optical fibre and electrical conductors in one cable
• Engineered buoyancy for controlled underwater positioning
• Supports data, video, power, telemetry, and control functions
• Reduces the need for multiple separate cables
• Suitable for dynamic marine and subsea applications
• Helps minimise seabed contact and snagging
• High-bandwidth fibre-optic communication
• Resistant to electromagnetic interference
• Robust construction for deployment and retrieval
• Configurable to suit project-specific requirements
• Suitable for custom termination and connector systems
• Designed for demanding offshore and underwater environments