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Product

subsea umbilical, ROV tether & oceanographic tow cable UNOLS / .375 EM Winch600 V (-40 to +85 °C)Double Contra-Helical Steel Armour (

A216375 .375-Inch (9.53 mm) 14,600 lbs Double-Armoured Electromechanical Winch CableUNOLS / .375 EM Winch — 600 V — -40 to +85 °C Subsea & Offshore Cable

A216375 .375-Inch (9.53 mm) 14,600 lbs Double-Armoured Electromechanical Winch Cable featuring multi-core stranded copper conductors and double contra-helical steel armour (.375") (UNOLS / .375 EM Winch, 600 V, -40 to +85 °C).

Water-resistant

Ozone, UV & moisture

Oil-resistant

Approved

Configuration

Order designation: A216375 .375 EM Type I
Outer Ø ≈: 8.2 mm
Net weight ≈: 265 kg/km
Tensile rating ≈: 54.3 kN
Core / stranding: Stranded SnCu / Double Steel or UHMWPE

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: 600 V
Operating temp.: −40…+85 °C
Min. bend radius: 15 × OD
Core / conductor: Multi-Core Stran
Outer protection: Double Contra-He
Standard: UNOLS / .375 EM

Typical values for this cable type, based on Hydrographic .375-Inch (9.53 mm) Torque-Balanced Double-Armoured EM Winch Specification — confirmed in the datasheet and quotation for your order.

Application fit

Is A216375 .375 EM 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: A216375 .375 EM (Hydrographic .375-Inch (9.53 mm) Torque-Balanced Double-Armoured EM Winch Specification) featuring multi-core stranded copper conductors, polyolefin core insulation and double contra-helical steel armour (.375") (3-layer construction).

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	Multi-Core Stranded Copper Conductors	Seven stranded copper conductors for hydrographic power & telemetry
2	Polyolefin Core Insulation	High-dielectric polyolefin insulation
3	Double Contra-Helical Steel Armour (.375	Two contra-helical galvanized steel wire layers (Ø 9.53 mm, 14,600 lbs)

A216375 .375 EM — Standard Subsea & Offshore Execution

Built to Hydrographic .375-Inch (9.53 mm) Torque-Balanced Double-Armoured EM Winch Specification with multi-core stranded copper conductors and double contra-helical steel armour (.375")

A216375 .375 EM — Custom Continuous Winch / Reel Length

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

A216375 .375 EM — 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 Hydrographic .375-Inch (9.53 mm) Torque-Balanced Double-Armoured EM Winch Specification. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage / transmission duty: 600 V (Hydrographic .375-Inch (9.53 mm) Torque-Balanced Double-Armoured EM Winch Specification)
Core / conductor construction: Multi-Core Stranded Copper Conductors — Seven stranded copper conductors for hydrographic power & telemetry
Primary dielectric / buffering: Polyolefin Core Insulation — High-dielectric polyolefin insulation

Thermal

Continuous operating temperature: −40…+85 °C (subsea & offshore duty)
Hydrostatic & thermal stability: Verified thermal and hydrostatic stability per Hydrographic .375-Inch (9.53 mm) Torque-Balanced Double-Armoured EM Winch Specification
Storage & transport temperature: −40…+80 °C on export wooden/steel winch reel

Mechanical

Outer protection / armouring: Double Contra-Helical Steel Armour (.375") — Two contra-helical galvanized steel wire layers (Ø 9.53 mm, 14,600 lbs)
Minimum bending radius: 15 × OD
Armour, strength member & mechanical duty: Polyolefin Core Insulation — High-dielectric polyolefin insulation

Resistance

Seawater, hydrostatic & hydrolysis resistance: Engineered for continuous seawater immersion, pressure cycling and hydrolysis resistance per Hydrographic .375-Inch (9.53 mm) Torque-Balanced Double-Armoured EM Winch Specification
Oil, drilling mud & abrasion resistance: Resistant to marine hydraulic oils, salt mist, winch sheave wear and seabed abrasion per Hydrographic .375-Inch (9.53 mm) Torque-Balanced Double-Armoured EM Winch Specification
RoHS & REACH compliance: RoHS 2 (2011/65/EU + 2015/863) & REACH SVHC compliant

Reference standards

Governing standard: Hydrographic .375-Inch (9.53 mm) Torque-Balanced Double-Armoured EM Winch 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: A216375 .375 EM
Sheath colour & metre marking: Continuous metre-marked black outer finish (Double Contra-He)
Customs tariff (HS): 8544.49 / 8544.60 / 8544.70

Sizes

3 standard A216375 .375 EM subsea & offshore configurations

Manufactured to Hydrographic .375-Inch (9.53 mm) Torque-Balanced Double-Armoured EM Winch 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
A216375 .375 EM Construction Schedule (−40…+85 °C)
A216375 .375 EM Type I	Standard oceanographic / offshore build	Stranded SnCu / Double Steel or UHMWPE	8.2	265	54.3	125
A216375 .375 EM Type II	Medium-duty deepwater / offshore build	Stranded SnCu / Double Steel or UHMWPE	9.5	355	64.9	145
A216375 .375 EM Type III	Heavy-duty deep-tow / offshore build	Stranded SnCu / Double Steel or UHMWPE	10.5	440	79.2	160

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 Hydrographic .375-Inch (9.53 mm) Torque-Balanced Double-Armoured EM Winch Specification.

Electrical, optical & thermal parameters
Configuration	Max. DC R₂₀ / Atten. Ω/km or dB/km	Rating / Impedance	Operating temp.
Standard oceanographic / offshore build	11.50	600 V (Std Duty)	−40…+85 °C
Medium-duty deepwater / offshore build	8.20	600 V (Med Duty)	−40…+85 °C
Heavy-duty deep-tow / offshore build	6.50	600 V (Heavy Duty)	−40…+85 °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 (Hydrographic .375-Inch (9.53 mm) Torque-Balanced Double-Armoured EM Winch Specification)	DC resistance at 20 °C / optical attenuation and outer diameter within Hydrographic .375-Inch (9.53 mm) Torque-Balanced Double-Armoured EM Winch Specification tolerances	Every manufactured drum length
High-voltage dielectric & insulation resistance test (Hydrographic .375-Inch (9.53 mm) Torque-Balanced Double-Armoured EM Winch Specification)	Zero dielectric breakdown and verified insulation resistance for 600 V rating	Every manufactured drum length
Sample tests
Hydrostatic pressure, tensile breaking load & water-blocking qualification (Hydrographic .375-Inch (9.53 mm) Torque-Balanced Double-Armoured EM Winch Specification)	Verified subsea pressure integrity, torque-balanced tensile performance and thermal stability across −40…+85 °C	Type qualification & periodic lot audit

Inspection certificate

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

Product approvals

UNOLS / .375 EM Winch 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 A216375 .375 EM UNOLS / .375 EM Winch 600 V 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

PDFA216375 .375-Inch (9.53 mm) 14,600 lbs Double-Armoured Electromechanic – technical datasheet3 sizes · construction, technical data, approvals XLSXA216375 .375 EM 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 A216375 .375 EM (A216375 .375-Inch (9.53 mm) 14,600 lbs Double-Armoured Electromechanical Winch Cable)?

A216375 .375 EM (A216375 .375-Inch (9.53 mm) 14,600 lbs Double-Armoured Electromechanical Winch Cable) is manufactured in accordance with Hydrographic .375-Inch (9.53 mm) Torque-Balanced Double-Armoured EM Winch Specification for 600 V service over -40 to +85 °C. Its 3-layer construction comprises multi-core stranded copper conductors, polyolefin core insulation and double contra-helical steel armour (.375").

What is the minimum bending radius and operating temperature range for A216375 .375 EM?

The minimum bending radius for A216375 .375 EM is 15 × OD across its continuous operating temperature range of -40 to +85 °C, ensuring mechanical, hydrostatic and dielectric reliability in subsea and offshore service.

How are the concentric layers of A216375 .375 EM arranged from inside to outside?

From inside to outside, the construction sequence is: (01) Multi-Core Stranded Copper Conductors — Seven stranded copper conductors for hydrographic power & telemetry; (02) Polyolefin Core Insulation — High-dielectric polyolefin insulation; (03) Double Contra-Helical Steel Armour (.375") — Two contra-helical galvanized steel wire layers (Ø 9.53 mm, 14,600 lbs).

What factory test certificates are supplied with A216375 .375 EM?

Every production drum of A216375 .375 EM undergoes routine conductor resistance/OTDR continuity, high-voltage dielectric and dimensional testing per Hydrographic .375-Inch (9.53 mm) Torque-Balanced Double-Armoured EM Winch Specification, and is delivered with an EN 10204 3.1 factory test certificate.

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03Message for our engineers

A216375 .375 EM A216375 .375-Inch (9.53 mm) 14,600 lbs Double-Armoured Electromechanical Winch Cable

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