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Product

subsea umbilical, ROV tether & oceanographic tow cable 3D Seismic HVDC/EO Lead-In1,000 V – 3,000 V DC (-30 to +80 °C)Low-Drag Abrasion-Resistant Outer Sh

Multi-Streamer 3D Seismic HVDC Power & Single-Mode Optical Heavy Steel-Armoured Lead-In Cable3D Seismic HVDC/EO Lead-In — 1,000 V – 3,000 V DC — -30 to +80 °C Subsea & Offshore Cable

Multi-Streamer 3D Seismic HVDC Power & Single-Mode Optical Heavy Steel-Armoured Lead-In Cable (3D Seismic HVDC/EO Lead-In) engineered for 1,000 V – 3,000 V DC service across -30 to +80 °C (min. bend radius 15 × OD).

Water-resistant

EMC screen

Oil-resistant

Approved

Configuration

Order designation: Heavy Seismic Lead-In 4–12F EOM/Sub
Outer Ø ≈: 8.2 mm
Net weight ≈: 260 kg/km
Tensile rating ≈: 48.0 kN
Core / stranding: Laser-welded SS FIMT + Steel/Aramid Armour

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: 1,000 V – 3,000
Operating temp.: −30…+80 °C
Min. bend radius: 15 × OD
Core / conductor: Single-Mode Opti
Outer protection: Low-Drag Abrasio
Standard: 3D Seismic HVDC/

Typical values for this cable type, based on Multi-Streamer 3D Seismic 6×HVDC XLPE + SMF Contra-Helical Steel-Armoured Lead-In Specification — confirmed in the datasheet and quotation for your order.

Application fit

Is Heavy Seismic Lead-In 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: Heavy Seismic Lead-In (Multi-Streamer 3D Seismic 6×HVDC XLPE + SMF Contra-Helical Steel-Armoured Lead-In Specification) featuring single-mode optical fiber bundle tube, hv dc copper power conductors (6 cores) and low-drag abrasion-resistant outer sheath (4-layer construction).

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	Single-Mode Optical Fiber Bundle Tube	Central stainless-steel tube for high-bandwidth 3D seismic telemetry
2	HV DC Copper Power Conductors (6 Cores)	Stranded copper conductors with XLPE/HDPE insulation
3	Double Prestressed Steel Wire Armour	Contra-helical high-tensile galvanized steel wire armour layers
4	Low-Drag Abrasion-Resistant Outer Sheath	Smooth polymeric outer jacket protecting deck sheaves and fairleads

Heavy Seismic Lead-In — Standard Subsea & Offshore Execution

Built to Multi-Streamer 3D Seismic 6×HVDC XLPE + SMF Contra-Helical Steel-Armoured Lead-In Specification with single-mode optical fiber bundle tube and low-drag abrasion-resistant outer sheath

Heavy Seismic Lead-In — Custom Continuous Winch / Reel Length

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

Heavy Seismic Lead-In — 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 Multi-Streamer 3D Seismic 6×HVDC XLPE + SMF Contra-Helical Steel-Armoured Lead-In Specification. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage / transmission duty: 1,000 V – 3,000 V DC (Multi-Streamer 3D Seismic 6×HVDC XLPE + SMF Contra-Helical Steel-Armoured Lead-In Specification)
Core / conductor construction: Single-Mode Optical Fiber Bundle Tube — Central stainless-steel tube for high-bandwidth 3D seismic telemetry
Primary dielectric / buffering: HV DC Copper Power Conductors (6 Cores) — Stranded copper conductors with XLPE/HDPE insulation

Thermal

Continuous operating temperature: −30…+80 °C (subsea & offshore duty)
Hydrostatic & thermal stability: Verified thermal and hydrostatic stability per Multi-Streamer 3D Seismic 6×HVDC XLPE + SMF Contra-Helical Steel-Armoured Lead-In Specification
Storage & transport temperature: −40…+80 °C on export wooden/steel winch reel

Mechanical

Outer protection / armouring: Low-Drag Abrasion-Resistant Outer Sheath — Smooth polymeric outer jacket protecting deck sheaves and fairleads
Minimum bending radius: 15 × OD
Armour, strength member & mechanical duty: Double Prestressed Steel Wire Armour — Contra-helical high-tensile galvanized steel wire armour layers

Resistance

Seawater, hydrostatic & hydrolysis resistance: Engineered for continuous seawater immersion, pressure cycling and hydrolysis resistance per Multi-Streamer 3D Seismic 6×HVDC XLPE + SMF Contra-Helical Steel-Armoured Lead-In Specification
Oil, drilling mud & abrasion resistance: Resistant to marine hydraulic oils, salt mist, winch sheave wear and seabed abrasion per Multi-Streamer 3D Seismic 6×HVDC XLPE + SMF Contra-Helical Steel-Armoured Lead-In Specification
RoHS & REACH compliance: RoHS 2 (2011/65/EU + 2015/863) & REACH SVHC compliant

Reference standards

Governing standard: Multi-Streamer 3D Seismic 6×HVDC XLPE + SMF Contra-Helical Steel-Armoured Lead-In 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: Heavy Seismic Lead-In
Sheath colour & metre marking: Continuous metre-marked black outer finish (Low-Drag Abrasio)
Customs tariff (HS): 8544.49 / 8544.60 / 8544.70

Sizes

3 standard Heavy Seismic Lead-In subsea & offshore configurations

Manufactured to Multi-Streamer 3D Seismic 6×HVDC XLPE + SMF Contra-Helical Steel-Armoured Lead-In 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
Heavy Seismic Lead-In Construction Schedule (−30…+80 °C)
Heavy Seismic Lead-In 4–12F EOM/Sub	4–12 × ITU-T G.652D / G.654E SM (+ Power)	Laser-welded SS FIMT + Steel/Aramid Armour	8.2	260	48.0	125
Heavy Seismic Lead-In 24–48F EOM/Sub	24–48 × ITU-T G.652D / G.654E SM (+ Power)	Laser-welded SS FIMT + Contra-Helical Steel	17.5	680	120.0	260
Heavy Seismic Lead-In 96–192F Trunk	96–192 × ITU-T G.654E / G.652D Submarine	SS Tube + Steel Vault + Cu Tube + DA Armour	28.0	1,650	300.0	420

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 Multi-Streamer 3D Seismic 6×HVDC XLPE + SMF Contra-Helical Steel-Armoured Lead-In Specification.

Electrical, optical & thermal parameters
Configuration	Max. DC R₂₀ / Atten. Ω/km or dB/km	Rating / Impedance	Operating temp.
4–12 × ITU-T G.652D / G.654E SM (+ Power)	0.35	≤0.35 dB/km @ 1310 nm	−30…+80 °C
24–48 × ITU-T G.652D / G.654E SM (+ Power)	0.21	≤0.21 dB/km @ 1550 nm	−30…+80 °C
96–192 × ITU-T G.654E / G.652D Submarine	0.18	≤0.18 dB/km @ 1550 nm	−30…+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 (Multi-Streamer 3D Seismic 6×HVDC XLPE + SMF Contra-Helical Steel-Armoured Lead-In Specification)	DC resistance at 20 °C / optical attenuation and outer diameter within Multi-Streamer 3D Seismic 6×HVDC XLPE + SMF Contra-Helical Steel-Armoured Lead-In Specification tolerances	Every manufactured drum length
High-voltage dielectric & insulation resistance test (Multi-Streamer 3D Seismic 6×HVDC XLPE + SMF Contra-Helical Steel-Armoured Lead-In Specification)	Zero dielectric breakdown and verified insulation resistance for 1,000 V – 3,000 V DC rating	Every manufactured drum length
Sample tests
Hydrostatic pressure, tensile breaking load & water-blocking qualification (Multi-Streamer 3D Seismic 6×HVDC XLPE + SMF Contra-Helical Steel-Armoured Lead-In Specification)	Verified subsea pressure integrity, torque-balanced tensile performance and thermal stability across −30…+80 °C	Type qualification & periodic lot audit

Inspection certificate

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

Product approvals

3D Seismic HVDC/EO Lead-In 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 Heavy Seismic Lead-In 3D Seismic HVDC/EO Lead-In 1,000 V – 3,000 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

PDFMulti-Streamer 3D Seismic HVDC Power & Single-Mode Optical Heavy Steel – technical datasheet3 sizes · construction, technical data, approvals XLSXHeavy Seismic Lead-In 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 Heavy Seismic Lead-In (Multi-Streamer 3D Seismic HVDC Power & Single-Mode Optical Heavy Steel-Armoured Lead-In Cable)?

Heavy Seismic Lead-In (Multi-Streamer 3D Seismic HVDC Power & Single-Mode Optical Heavy Steel-Armoured Lead-In Cable) is manufactured in accordance with Multi-Streamer 3D Seismic 6×HVDC XLPE + SMF Contra-Helical Steel-Armoured Lead-In Specification for 1,000 V – 3,000 V DC service over -30 to +80 °C. Its 4-layer construction comprises single-mode optical fiber bundle tube, hv dc copper power conductors (6 cores) and low-drag abrasion-resistant outer sheath.

What is the minimum bending radius and operating temperature range for Heavy Seismic Lead-In?

The minimum bending radius for Heavy Seismic Lead-In is 15 × OD across its continuous operating temperature range of -30 to +80 °C, ensuring mechanical, hydrostatic and dielectric reliability in subsea and offshore service.

How are the concentric layers of Heavy Seismic Lead-In arranged from inside to outside?

From inside to outside, the construction sequence is: (01) Single-Mode Optical Fiber Bundle Tube — Central stainless-steel tube for high-bandwidth 3D seismic telemetry; (02) HV DC Copper Power Conductors (6 Cores) — Stranded copper conductors with XLPE/HDPE insulation; (03) Double Prestressed Steel Wire Armour — Contra-helical high-tensile galvanized steel wire armour layers; (04) Low-Drag Abrasion-Resistant Outer Sheath — Smooth polymeric outer jacket protecting deck sheaves and fairleads.

What factory test certificates are supplied with Heavy Seismic Lead-In?

Every production drum of Heavy Seismic Lead-In undergoes routine conductor resistance/OTDR continuity, high-voltage dielectric and dimensional testing per Multi-Streamer 3D Seismic 6×HVDC XLPE + SMF Contra-Helical Steel-Armoured Lead-In Specification, and is delivered with an EN 10204 3.1 factory test certificate.

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Your selection and application details are copied into the enquiry form below.

01Selected sizes

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02Reel & motion

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03Message for our engineers

Heavy Seismic Lead-In Multi-Streamer 3D Seismic HVDC Power & Single-Mode Optical Heavy Steel-Armoured Lead-In Cable

Selected sizes:


Reel & motion:
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