Coax Armoured Tow Cable for Subsea and Marine Systems
TEBAOFLEX Coax Armoured Tow Cable combines a coaxial transmission core with two layers of preformed galvanized steel wire armour. It is designed for marine towing, subsea sensors, sonar, offshore survey and underwater target systems that require controlled impedance, mechanical protection and high tensile strength.
Three configurations are available for different signal requirements: 40 Ohm, 45 Ohm and 50 Ohm coaxial armoured tow cable. Each construction uses a copper-based coaxial core, polymer insulation, a spiral copper shield, tape, sheath and double-layer galvanized steel wire armour.
Key Features
- Coaxial cable construction for controlled high-frequency signal transmission.
- Two layers of preformed galvanized steel wire armour.
- Suitable for towing, subsea and marine survey applications.
- 40 Ohm, 45 Ohm and 50 Ohm impedance options.
- High tensile strength for demanding deployment and towing loads.
- Designed for controlled bending and dynamic underwater handling.
- Polypropylene or HDPE insulation and sheath options according to configuration.
Available Coaxial Configurations
| Configuration | Core and armour construction | Electrical data | Mechanical data |
|---|---|---|---|
| 1 x COAX 39 Ohm | Tinned copper conductor 7 x 0.40 mm; XLPE insulation; bare copper spiral shield 14 AWG with 90% or higher coverage; XLPE sheath; two galvanized steel wire armour layers | 1200 VDC; 131 pF/m capacitance; 39 Ohm impedance at 1 MHz; attenuation 16.9 dB/km at 1 MHz | 8.20 mm diameter; 260 kg/km in air; 42.7 kN breaking strength; 17.1 kN working load; 180 mm dynamic bending radius; -30 C to +90 C |
| 1 x COAX 40 Ohm | Tinned copper conductor 19 x 0.36 mm; HDPE insulation; bare copper spiral shield 12 AWG with 90% nominal coverage; HDPE sheath; two galvanized steel wire armour layers | 1900 VDC; 131 pF/m capacitance; 40 Ohm impedance at 1 MHz; attenuation < 11.5 dB/km at 1 MHz | 11.50 mm diameter; 460 kg/km in air; 71.2 kN breaking strength; 17.8 kN working load; 230 mm bending radius; -30 C to +80 C |
| 1 x COAX 42 Ohm | Bare copper conductor 19 x 0.18 mm; XLPE insulation; bare copper spiral shield 16 AWG with 90% or higher coverage; XLPE sheath; two galvanized steel wire armour layers | 1800 V; 125 pF/m capacitance; 42 Ohm impedance at 1 MHz; attenuation 18.4 dB/km at 1 MHz | 6.65 mm diameter; 161 kg/km in air; 23 kN breaking strength; 5.75 kN working load; 130 mm dynamic bending radius; -30 C to +90 C |
| 1 x COAX 45 Ohm | Hard-drawn bare copper conductor 18 x 0.57 mm with central PA monofilament; HDPE compound insulation; hard-drawn bare copper spiral shield with 90% or higher coverage; HDPE sheath; two galvanized steel wire armour layers | 3000 VDC; 108 pF/m capacitance; 45 Ohm impedance at 1 MHz; attenuation < 6.1 dB/km at 1 MHz | 17.30 mm diameter; 1013 kg/km in air; 178 kN breaking strength; 44 kN working load; 360 mm bending radius; -40 C to +90 C |
| 1 x COAX 50 Ohm | Bare copper conductor 19 x 0.455 mm; PP insulation; bare copper spiral shield 9 AWG with 90% or higher coverage; PP outer sheath; two galvanized steel wire armour layers | 3000 V; 102 pF/m capacitance; 50 Ohm impedance at 1 MHz; attenuation < 5.6 dB/km at 1 MHz | 14.15 mm diameter; 645 kg/km in air; 89 kN breaking strength; 22 kN working load; 280 mm bending radius; -30 C to +90 C |
Construction Details
- Coaxial conductor: Bare, tinned or hard-drawn copper construction selected for the impedance design.
- Insulation: PP or HDPE insulation according to the coaxial configuration.
- Spiral shield: Copper spiral shield with nominal coverage of 90% or higher.
- Tape layer: Copper/polyester tape for core protection and construction stability.
- Sheath: PP or HDPE outer sheath.
- Armour: First and second layers of preformed galvanized steel wire armour.
Applications
- Marine and subsea towing systems.
- Sonar and underwater acoustic equipment.
- Oceanographic and geophysical survey systems.
- Subsea sensors, cameras and underwater target equipment.
- Offshore inspection, monitoring and deployment systems.
Selection Guidance
Select the coaxial impedance according to the connected equipment and transmission system. Confirm the required signal frequency, attenuation, capacitance, voltage rating, towing load, deployment depth, bending radius, cable length and handling method before ordering.
The listed mechanical values are configuration-specific. The cable should be installed and operated within the specified working load and bending radius, with the winch, termination and towing equipment evaluated as one complete system.
Request a Technical Proposal
TEBAOFLEX can review the required coaxial impedance, signal performance, armour construction, tensile load, cable length and termination arrangement for your marine or subsea project.
Need a custom coax armoured tow cable? Submit your requirements to TEBAOFLEX technical support for a project-specific recommendation.
