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Product

subsea umbilical, ROV tether & oceanographic tow cable 1SSA4 / 40-Ohm Sonar Tow1,500 V DC (-40 to +80 °C)71.2 kN Double Preformed Steel Armou

1SSA4 40-Ohm Heavy Double-Armoured Deep-Water Side-Scan & SAS Sonar Coaxial Tow Cable (71.2 kN)1SSA4 / 40-Ohm Sonar Tow — 1,500 V DC — -40 to +80 °C Subsea & Offshore Cable

1SSA4 40-Ohm Heavy Double-Armoured Deep-Water Side-Scan & SAS Sonar Coaxial Tow Cable (71.2 kN) (1SSA4 / 40-Ohm Sonar Tow) engineered for 1,500 V DC service across -40 to +80 °C (min. bend radius 15 × OD).

Water-resistant

EMC screen

Oil-resistant

Approved

Configuration

Order designation: 1SSA4 40-Ohm Coax / Cat5e
Outer Ø ≈: 8.2 mm
Net weight ≈: 245 kg/km
Tensile rating ≈: 42.7 kN
Core / stranding: Stranded SnCu + Foam PE/FEP + Armour/Aramid

All sizes (3)

Request a quote Datasheet WhatsApp info@tebaoflex.com

Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum

Rated voltage: 1,500 V DC
Operating temp.: −40…+80 °C
Min. bend radius: 15 × OD
Core / conductor: High-Conductivit
Outer protection: 71.2 kN Double P
Standard: 1SSA4 / 40-Ohm S

Typical values for this cable type, based on 1SSA4 (Ø 11.5 mm, 71.2 kN MBL) 40-Ohm Heavy Armoured Coaxial Tow Specification — confirmed in the datasheet and quotation for your order.

Application fit

Is 1SSA4 40-Ohm right for your machine?

Immersion & wet locations

Suitable

Hydrolysis-resistant polyurethane (PUR) or HDPE jacket and water-blocked core withstand continuous deepwater hydrostatic immersion.

Vertical / spreader reel

Suitable

Torque-balanced contra-helical steel wire armour or high-modulus aramid strength member supports dynamic winch deployment without hockling

Trailing & towing

Suitable

Abrasion-resistant outer sheath and high working-load strength elements handle dynamic marine towing, buoy mooring and ROV excursion.

Offshore platform & shipboard deck trays

Suitable

UV-stabilised, oil- and seawater-resistant construction withstands A-frame sheaves, traction winches and open research-vessel decks.

Energy chain / drag chain

Not suitable

Subsea umbilical, ROV tether and towed array cables are not designed for indoor factory automation drag chains.

Use M23 Servo Assembly

Typical machinesUnderwater & Ocean ExplorationOceanographic CTD, ADCP & Deep-Tow SurveysWork-Class & Observation ROV / AUV SystemsSide-Scan Sonar, SAS & Towed Hydrophone ArraysMarine 2D/3D/UHR Seismic Streamers & OBC

Construction

Layer by layer

Shown: 1SSA4 40-Ohm (1SSA4 (Ø 11.5 mm, 71.2 kN MBL) 40-Ohm Heavy Armoured Coaxial Tow Specification) featuring high-conductivity copper center conductor, 40-ohm xlpe coaxial dielectric and 71.2 kn double preformed steel armour (4-layer construction).

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	High-Conductivity Copper Center Conducto	Stranded plain copper coaxial inner conductor
2	40-Ohm XLPE Coaxial Dielectric	Cross-linked polyethylene insulation engineered for 40 O impedance
3	Copper Outer Coaxial Shield & XLPE Beddi	Helically served copper outer conductor + extruded XLPE inner sheath
4	71.2 kN Double Preformed Steel Armour	Two contra-helical layers of high-tensile galvanized steel wire (2 11.5 mm)

1SSA4 40-Ohm — Standard Subsea & Offshore Execution

Built to 1SSA4 (Ø 11.5 mm, 71.2 kN MBL) 40-Ohm Heavy Armoured Coaxial Tow Specification with high-conductivity copper center conductor and 71.2 kn double preformed steel armour

1SSA4 40-Ohm — Custom Continuous Winch / Reel Length

Available in custom continuous subsea winch, tow or seabed lengths with water-blocked terminations

1SSA4 40-Ohm — Hydrostatic, Tensile & Routine Certified

Supplied with EN 10204 3.1 routine dielectric, optical OTDR / DC resistance & tensile test report

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on 1SSA4 (Ø 11.5 mm, 71.2 kN MBL) 40-Ohm Heavy Armoured Coaxial Tow Specification. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage / transmission duty: 1,500 V DC (1SSA4 (Ø 11.5 mm, 71.2 kN MBL) 40-Ohm Heavy Armoured Coaxial Tow Specification)
Core / conductor construction: High-Conductivity Copper Center Conductor — Stranded plain copper coaxial inner conductor
Primary dielectric / buffering: 40-Ohm XLPE Coaxial Dielectric — Cross-linked polyethylene insulation engineered for 40 O impedance

Thermal

Continuous operating temperature: −40…+80 °C (subsea & offshore duty)
Hydrostatic & thermal stability: Verified thermal and hydrostatic stability per 1SSA4 (Ø 11.5 mm, 71.2 kN MBL) 40-Ohm Heavy Armoured Coaxial Tow Specification
Storage & transport temperature: −40…+80 °C on export wooden/steel winch reel

Mechanical

Outer protection / armouring: 71.2 kN Double Preformed Steel Armour — Two contra-helical layers of high-tensile galvanized steel wire (2 11.5 mm)
Minimum bending radius: 15 × OD
Armour, strength member & mechanical duty: Copper Outer Coaxial Shield & XLPE Bedding — Helically served copper outer conductor + extruded XLPE inner sheath

Resistance

Seawater, hydrostatic & hydrolysis resistance: Engineered for continuous seawater immersion, pressure cycling and hydrolysis resistance per 1SSA4 (Ø 11.5 mm, 71.2 kN MBL) 40-Ohm Heavy Armoured Coaxial Tow Specification
Oil, drilling mud & abrasion resistance: Resistant to marine hydraulic oils, salt mist, winch sheave wear and seabed abrasion per 1SSA4 (Ø 11.5 mm, 71.2 kN MBL) 40-Ohm Heavy Armoured Coaxial Tow Specification
RoHS & REACH compliance: RoHS 2 (2011/65/EU + 2015/863) & REACH SVHC compliant

Reference standards

Governing standard: 1SSA4 (Ø 11.5 mm, 71.2 kN MBL) 40-Ohm Heavy Armoured Coaxial Tow Specification
Environmental & test standards: IEC 60228 / IEC 60794 / ITU-T G.972 / IEEE 1580 / EN 10204
Quality management & inspection: ISO 9001:2015 & EN 10204 3.1 factory routine inspection

Identification

Model designation: 1SSA4 40-Ohm
Sheath colour & metre marking: Continuous metre-marked black outer finish (71.2 kN Double P)
Customs tariff (HS): 8544.49 / 8544.60 / 8544.70

Sizes

3 standard 1SSA4 40-Ohm subsea & offshore configurations

Manufactured to 1SSA4 (Ø 11.5 mm, 71.2 kN MBL) 40-Ohm Heavy Armoured Coaxial Tow Specification for subsea, oceanographic, ROV, seismic and offshore applications.

Dimensions, tensile load & weights
Order designation	Configuration	Core / stranding	Outer Ø ≈ mm	Net weight ≈ kg/km	Breaking / tensile kN ≈	Min. bend R mm
1SSA4 40-Ohm Construction Schedule (−40…+80 °C)
1SSA4 40-Ohm Coax / Cat5e	Coax (39/40/50/75 Ω) or 4Pr Cat5e + Power	Stranded SnCu + Foam PE/FEP + Armour/Aramid	8.2	245	42.7	120
1SSA4 40-Ohm Composite B	Heavy Coax / 64-Ch Digital Bus + Power	Stranded SnCu + Low-Loss Dielectric + Strength	11.5	485	71.2	170
1SSA4 40-Ohm Array / Trunk C	Multi-Ch Digital Streamer / 255-Ch Bus	Redundant Telemetry + Aramid + PUR Jacket	44.5	1,620	95.0	445

Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
Custom core cross-sections, pair/fibre counts, armour breaking loads and continuous winch/seabed lengths available per 1SSA4 (Ø 11.5 mm, 71.2 kN MBL) 40-Ohm Heavy Armoured Coaxial Tow Specification.

Electrical, optical & thermal parameters
Configuration	Max. DC R₂₀ / Atten. Ω/km or dB/km	Rating / Impedance	Operating temp.
Coax (39/40/50/75 Ω) or 4Pr Cat5e + Power	18.50	1,500 V DC (High-Speed)	−40…+80 °C
Heavy Coax / 64-Ch Digital Bus + Power	11.20	1,500 V DC (Deep-Tow/Array)	−40…+80 °C
Multi-Ch Digital Streamer / 255-Ch Bus	6.80	1,500 V DC (Full Array)	−40…+80 °C

Every production length undergoes routine conductor DC resistance, high-voltage dielectric or OTDR continuity and dimensional verification.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

ConductorClass 5 stranding
Spark test100 % in-line
Lay-upCores, earth, fillers
SheathingInner, braid / screen, outer
Electrical testsAC voltage, resistance
DimensionsOD, wall thickness
Inspection documents & dispatchDrum & dispatch

Testing & inspection	Test value / reference	Frequency
Routine tests
Conductor resistance, optical OTDR continuity & dimensional verification (1SSA4 (Ø 11.5 mm, 71.2 kN MBL) 40-Ohm Heavy Armoured Coaxial Tow Specification)	DC resistance at 20 °C / optical attenuation and outer diameter within 1SSA4 (Ø 11.5 mm, 71.2 kN MBL) 40-Ohm Heavy Armoured Coaxial Tow Specification tolerances	Every manufactured drum length
High-voltage dielectric & insulation resistance test (1SSA4 (Ø 11.5 mm, 71.2 kN MBL) 40-Ohm Heavy Armoured Coaxial Tow Specification)	Zero dielectric breakdown and verified insulation resistance for 1,500 V DC rating	Every manufactured drum length
Sample tests
Hydrostatic pressure, tensile breaking load & water-blocking qualification (1SSA4 (Ø 11.5 mm, 71.2 kN MBL) 40-Ohm Heavy Armoured Coaxial Tow Specification)	Verified subsea pressure integrity, torque-balanced tensile performance and thermal stability across −40…+80 °C	Type qualification & periodic lot audit

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

1SSA4 / 40-Ohm Sonar Tow CompliantEN 10204 3.1 Factory Test CertificateCE, RoHS 2 (2011/65/EU) & REACH

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX 1SSA4 40-Ohm 1SSA4 / 40-Ohm Sonar Tow 1,500 V DC CE

Delivery form: Heavy-duty export fumigated wooden drums, steel oceanographic winch reels or submarine turntables
Standard lengths: 500 m, 1,000 m, 3,000 m, 6,000 m or custom continuous subsea lengths
MOQ: 100 m (standard configurations) · 500 m (custom subsea builds)
Lead time: 2–6 weeks ex-works
Incoterms: EXW, FCA, FOB, CIF, DAP

Technical documents

Downloads

PDF1SSA4 40-Ohm Heavy Double-Armoured Deep-Water Side-Scan & SAS Sonar Co – technical datasheet3 sizes · construction, technical data, approvals XLSX1SSA4 40-Ohm spec data (Excel)All 3 sizes with dimensions and data, for your BOM or quotation

Revision: 2026-10-26
Updated: 2026-10-26

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

What governing standard and construction define 1SSA4 40-Ohm (1SSA4 40-Ohm Heavy Double-Armoured Deep-Water Side-Scan & SAS Sonar Coaxial Tow Cable (71.2 kN))?

1SSA4 40-Ohm (1SSA4 40-Ohm Heavy Double-Armoured Deep-Water Side-Scan & SAS Sonar Coaxial Tow Cable (71.2 kN)) is manufactured in accordance with 1SSA4 (Ø 11.5 mm, 71.2 kN MBL) 40-Ohm Heavy Armoured Coaxial Tow Specification for 1,500 V DC service over -40 to +80 °C. Its 4-layer construction comprises high-conductivity copper center conductor, 40-ohm xlpe coaxial dielectric and 71.2 kn double preformed steel armour.

What is the minimum bending radius and operating temperature range for 1SSA4 40-Ohm?

The minimum bending radius for 1SSA4 40-Ohm is 15 × OD across its continuous operating temperature range of -40 to +80 °C, ensuring mechanical, hydrostatic and dielectric reliability in subsea and offshore service.

How are the concentric layers of 1SSA4 40-Ohm arranged from inside to outside?

From inside to outside, the construction sequence is: (01) High-Conductivity Copper Center Conductor — Stranded plain copper coaxial inner conductor; (02) 40-Ohm XLPE Coaxial Dielectric — Cross-linked polyethylene insulation engineered for 40 O impedance; (03) Copper Outer Coaxial Shield & XLPE Bedding — Helically served copper outer conductor + extruded XLPE inner sheath; (04) 71.2 kN Double Preformed Steel Armour — Two contra-helical layers of high-tensile galvanized steel wire (2 11.5 mm).

What factory test certificates are supplied with 1SSA4 40-Ohm?

Every production drum of 1SSA4 40-Ohm undergoes routine conductor resistance/OTDR continuity, high-voltage dielectric and dimensional testing per 1SSA4 (Ø 11.5 mm, 71.2 kN MBL) 40-Ohm Heavy Armoured Coaxial Tow Specification, and is delivered with an EN 10204 3.1 factory test certificate.

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01Selected sizes

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02Reel & motion

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03Message for our engineers

1SSA4 40-Ohm Heavy Double-Armoured Deep-Water Side-Scan & SAS Sonar Coaxial Tow Cable (71.2 kN)

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Reel & motion:
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