LARS Cable Solutions 

for Launch and Recovery Systems

LARS operations place demanding mechanical and environmental requirements on umbilical cables during repeated launch and recovery. The umbilical cable can be engineered for the required bending performance, tensile strength, mechanical protection, power, signal, and fiber optic transmission.

LARS cables may also be referred to as deck cables or shipboard cables in some project applications. A typical LARS system integrates an umbilical cable, winch, overboarding mechanism, and docking head, combining mechanical systems, hydraulic control, automation, and deep-sea communication technologies for reliable subsea deployment and recovery.

Cable Requirements

Repeated Bending, Bending Radius & Handling

↗ Support repeated bending and flexing cycles

↗ Maintain flexibility and handling performance within the required bending radius

High Mechanical Loads

↗ Withstand tensile, compression, and torsional loads

↗ Maintain mechanical integrity under dynamic loading and ROV towing forces

Abrasion, Mechanical Wear & Harsh Marine Exposure

↗ Resist abrasion, mechanical wear, and repeated seawater exposure

↗ Withstand salt spray, UV exposure, drilling fluids, and oil contamination

EMI Protection & Signal Integrity

↗ Reduce electromagnetic interference and signal disruption

↗ Maintain reliable video, data, and control signal transmission

System Integration & Subsea Connectivity

↗ Support reliable integration with LARS and subsea equipment

↗ Maintain secure power, signal, and data connections during operation 

LARS Cable Engineering & Specifications

We provide custom cable design and manufacturing for LARS projects, with cable constructions engineered around each project’s equipment, operating conditions, and performance requirements. Cable construction, materials, dimensions, and performance can be customized to meet specific project requirements.

Typical Configurations — Fully Customizable

3×4 + 8×1.0 + 8FO PUR

3×16 + 12×1.5 + 12FO

Rated Voltage: 300/500V, 0.6/1kV, 3kV, 6kV

Fiber Optics Unit: single-mode or multi-mode.  Optional stainless-steel tight-buffered tube reinforcement.

Cable Construction

Water Blocking: Water-blocking yarn + compound for longitudinal water tightness

Outer Jacket: PUR / TPU

Lightweight ROV Cable: Kevlar tensile reinforcement

Heavy Duty ROV Cable: Stainless-steel wire armor for high tensile strength

Mechanical & Subsea Design

Breaking Load: ≥ 2.5 × maximum working load of the winch

Minimum Reel Bottom Diameter: ≥ 8 × cable outer diameter to reduce compression and potential fiber damage

Water Tightness: Longitudinal and transverse water blocking designed according to maximum operating depth

Deepwater Fiber Unit: Stainless-steel tight-buffered fiber optic units available for deepwater applications

Marine Classification: Support CCS, DNV, and ABS survey requirements

Cable Solutions

The cable solutions below represent typical designs with different functional characteristics, from ultra-flexible small-diameter cables for compact ROVs to armoured and heavy-duty cables for demanding subsea operations.

ROV Umbilical Cable

Suitable for LARS operations involving ROVs, providing combinations of power, control, signal, and communication functions.

→ View more about ROV Umbilical Cable

Hybrid Subsea Cable

Suitable for LARS systems requiring integrated power, signal, data, and fiber optic transmission in a single cable.

 → View more about Hybrid Subsea Cable

Ultra High Flex ROV Cable

Designed for compact and lightweight ROVs, providing ultra-high flexibility and small diameter for repeated launch and recovery cycles.

 → View more about Ultra High Flex ROV Cable

Armoured ROV Cable

Designed for ROV and LARS applications requiring enhanced mechanical protection, abrasion resistance, and reliable operation in demanding subsea environments.

 → View more about Armoured ROV Cable

Heavy Duty ROV Cable

Designed for large ROVs and heavy subsea equipment, providing high tensile strength and robust mechanical protection for demanding launch and recovery operations.

→ View more about Heavy Duty ROV Cable

Integrated Fiber Optic Cable

Integrated optical fibers with a Stainless Steel Tight-Buffered unit for reliable data transmission and enhanced mechanical protection.

→ View more about Integrated Fiber Optic Cables

Cable Gallery

View More Custom Cable Examples

Custom Cable Engineering Capability

Custom Cable Design

Cable structures are engineered according to application requirements, including electrical configuration, mechanical loads and installation conditions.

Material Selection

Materials are selected based on environmental factors such as seawater exposure, temperature, abrasion and flexibility requirements.

Structural Reinforcement 

Reinforcement solutions such as Kevlar, steel wire armour or customized strength members can be integrated according to tensile and mechanical requirements.

Testing Capability

Mechanical and electrical testing is performed to verify cable reliability and performance before delivery.