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Product

subsea ROV umbilical, AUV tether & sonar tow cable ITU-T G.657.B3 / IEC 60794Optical (0 V) (-40 to +85 °C)Subsea / Marine Outer Protective She

SPE-7043 Non-Kink STFOC Drone TetherITU-T G.657.B3 / IEC 60794 — Optical (0 V) — -40 to +85 °C Subsea & Marine Cable

SPE-7043 Non-Kink STFOC Drone Tether featuring bend-insensitive optical core (1×sm/mm) and subsea / marine outer protective sheath (ITU-T G.657.B3 / IEC 60794, Optical (0 V), -40 to +85 °C, min. bend radius 5 × OD).

Water-resistant

Oil-resistant

Outdoor & humid

Approved

Configuration

Order designation: SPE-7043 Non-Kink STFOC Tether 1×SM Ultra-Slim
Outer Ø ≈: 0.9 mm
Net weight ≈: 1 kg/km
Max. pulling ≈: 0.5 kN
Core / stranding: ITU-T G.657.B3 + Non-Kink Buffer + 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: Optical (0 V)
Operating temp.: −40…+85 °C
Min. bend radius: 5 × OD
Core / conductor: Bend-Insensitive
Outer protection: Subsea / Marine
Standard: ITU-T G.657.B3 /

Typical values for this cable type, based on ITU-T G.657.B3 SPE-7043 Non-Kink STFOC Subsea Drone Optical Tether Standard — confirmed in the datasheet and quotation for your order.

Application fit

Is SPE-7043 Non-Kink STFOC Tether right for your machine?

Immersion & wet locations

Suitable

Hydrolysis-resistant subsea PUR or HDPE outer sheath and water-blocked core interstices withstand continuous deep-ocean hydrostatic immers

Vertical / spreader reel

Suitable

Contra-helical galvanized steel wire armour or high-modulus aramid/LCP braid supports vertical traction winches, TMS cages and tow sheaves

Free-hanging vertical run

Suitable

Torque-balanced armour or neutrally buoyant foamed-PUR jacket prevents hockling and kinking during free-swimming ROV and tether excursions

Offshore platform & shipboard deck trays

Suitable

Resists seawater, marine bio-fouling, hydraulic oil, UV radiation and abrasion across vessel A-frames and launch-and-recovery systems (LAR

Energy chain / drag chain

Not suitable

Subsea ROV umbilicals and tow cables are optimized for winch deployment and water-column catenaries rather than high-speed factory drag ch

Use Drag-Chain Feeder Cable

Typical machinesUnderwater & Ocean ExplorationWork-Class & Observation ROV Umbilicals and TMS TethersOffshore Aquaculture Net Cleaners & Subsea Cage InspectionAUV, Ocean Glider & Expendable Spool-Payoff Micro-TethersUSV Towed Sonar Arrays, Seabed Crawlers & Subsea Trenchers

Construction

Layer by layer

Shown: SPE-7043 Non-Kink STFOC Tether (ITU-T G.657.B3 SPE-7043 Non-Kink STFOC Subsea Drone Optical Tether Standard) featuring bend-insensitive optical core (1×sm/mm), uv-cured acrylate primary buffer coating and subsea / marine outer protective sheath (4-layer construction).

SPE-7043 Non-Kink STFOC Tether — stepped horizontal cutaway showing Bend-Insensitive Optical Core (1×SM/MM) and Subsea — Layer cutaway

#	Layer	Material & reference
1	Bend-Insensitive Optical Core (1×SM/MM)	ITU-T G.657.B3 bend-insensitive single-mode / multi-mode optical fiber core
2	UV-Cured Acrylate Primary Buffer Coating	Concentric dual-layer micro-bend-resistant elastomeric primary optical buffer
3	Non-Kink High-Modulus Dielectric Buffer	Precision-extruded kink-resistant structural buffer for high-speed spool payoff
4	Subsea / Marine Outer Protective Sheath	Black hydrolysis- & abrasion-resistant marine Polyurethane (PUR) outer sheath

SPE-7043 Non-Kink STFOC Tether — Standard Subsea & Marine Execution

Built to ITU-T G.657.B3 SPE-7043 Non-Kink STFOC Subsea Drone Optical Tether Standard with bend-insensitive optical core (1×sm/mm) and subsea / marine outer protective sheath

SPE-7043 Non-Kink STFOC Tether — Custom Winch Length / Molded Termination

Available on continuous export winch drums or factory-terminated with subsea wet-mate / mechanical sockets

SPE-7043 Non-Kink STFOC Tether — Hydrostatic & Routine Certified

Supplied with EN 10204 3.1 routine dielectric, conductor/optical continuity & hydrostatic qualification report

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on ITU-T G.657.B3 SPE-7043 Non-Kink STFOC Subsea Drone Optical Tether Standard. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage / operating system: Optical (0 V) (ITU-T G.657.B3 SPE-7043 Non-Kink STFOC Subsea Drone Optical Tether Standard)
Core / conductor construction: Bend-Insensitive Optical Core (1×SM/MM) — ITU-T G.657.B3 bend-insensitive single-mode / multi-mode optical fiber core
Primary dielectric / optical buffer: UV-Cured Acrylate Primary Buffer Coating — Concentric dual-layer micro-bend-resistant elastomeric primary optical buffer

Thermal

Continuous operating temperature: −40…+85 °C (submerged seawater & topside deck service)
Hydrostatic & thermal cycling endurance: Verified cold-bend and wet dielectric stability across −40…+85 °C per ITU-T G.657.B3 SPE-7043 Non-Kink STFOC Subsea Drone Optical Tether Standard
Storage & transport temperature: −40…+80 °C on export wooden/steel cable drum

Mechanical

Outer jacket / sheath protection: Subsea / Marine Outer Protective Sheath — Black hydrolysis- & abrasion-resistant marine Polyurethane (PUR) outer sheath
Minimum bending radius: 5 × OD
Reinforcement / screen / bedding layer: Non-Kink High-Modulus Dielectric Buffer Tube — Precision-extruded kink-resistant structural buffer for high-speed spool payoff

Resistance

Seawater, hydrolysis & oil resistance: Resistant to permanent seawater immersion, hydrolysis, hydraulic oil and bio-fouling per ITU-T G.657.B3 SPE-7043 Non-Kink STFOC Subsea Drone Optical Tether Standard
Hydrostatic pressure & water blocking: Radial and longitudinal water-blocking integrity verified per ITU-T G.657.B3 SPE-7043 Non-Kink STFOC Subsea Drone Optical Tether Standard
RoHS & REACH compliance: RoHS 2 (2011/65/EU + 2015/863) & REACH SVHC compliant

Reference standards

Governing standard: ITU-T G.657.B3 SPE-7043 Non-Kink STFOC Subsea Drone Optical Tether Standard
Subsea & conductor qualification standards: IEC 60228 / DNV-ST-E402 / ISO 13628-5 / IEC 60794 / EN 10204
Quality management & inspection: ISO 9001:2015 & EN 10204 3.1 factory routine inspection

Identification

Model designation: SPE-7043 Non-Kink STFOC Tether
Sheath colour & metre marking: Continuous metre-marked black outer finish (Subsea / Marine )
Customs tariff (HS): 8544.49 / 8544.60 / 8544.70

Sizes

3 standard SPE-7043 Non-Kink STFOC Tether configurations

Manufactured to ITU-T G.657.B3 SPE-7043 Non-Kink STFOC Subsea Drone Optical Tether Standard for subsea robotics, ROV umbilicals, marine aquaculture and offshore sensor applications.

Dimensions, tensile load & weights
Order designation	Configuration	Core / stranding	Outer Ø ≈ mm	Net weight ≈ kg/km	Max. pulling kN ≈	Min. bend R mm
SPE-7043 Non-Kink STFOC Tether Construction Schedule (−40…+85 °C)
SPE-7043 Non-Kink STFOC Tether 1×SM Ultra-Slim	1 × G.657.B3 Single-Mode Micro-Tether	ITU-T G.657.B3 + Non-Kink Buffer + Aramid	0.9	1	0.5	10
SPE-7043 Non-Kink STFOC Tether 2×SM Buoyant	2 × G.657.B3 Single-Mode Buoyant Tether	ITU-T G.657.B3 + Aramid/LCP + Foamed PUR	2.8	6	2.2	20
SPE-7043 Non-Kink STFOC Tether 4×SM/MM Tactical	4 × G.657.A2/OM3 Subsea Optical Tether	Tight-Buffered Fiber + Aramid + Subsea PUR	5.6	28	6.8	35

Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
Custom core counts, optical fiber channels, wet-mate terminations and continuous winch lengths available per ITU-T G.657.B3 SPE-7043 Non-Kink STFOC Subsea Drone Optical Tether Standard.

Electrical, optical & thermal parameters
Configuration	Max. DC R₂₀ Ω/km	Rating / Impedance / Load	Operating temp.
1 × G.657.B3 Single-Mode Micro-Tether	0.01	1310/1550 nm (≤0.35 dB/km)	−40…+85 °C
2 × G.657.B3 Single-Mode Buoyant Tether	0.01	1310/1550 nm · SG ≈ 1.01	−40…+85 °C
4 × G.657.A2/OM3 Subsea Optical Tether	0.01	4-Ch Optical · 6.8 kN MBS	−40…+85 °C

Every production length undergoes routine conductor DC resistance / OTDR optical attenuation, AC dielectric 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 DC resistance / OTDR optical & dimensional check (ITU-T G.657.B3 SPE-7043 Non-Kink STFOC Subsea Drone Optical Tether Standard)	DC resistance at 20 °C, optical attenuation and wall thickness within ITU-T G.657.B3 SPE-7043 Non-Kink STFOC Subsea Drone Optical Tether Standard limits	Every manufactured drum length
AC high-voltage dielectric & insulation resistance test (ITU-T G.657.B3 SPE-7043 Non-Kink STFOC Subsea Drone Optical Tether Standard)	Zero dielectric breakdown and verified wet insulation resistance for Optical (0 V) rating	Every manufactured drum length
Sample tests
Hydrostatic pressure, tensile load & seawater immersion qualification (ITU-T G.657.B3 SPE-7043 Non-Kink STFOC Subsea Drone Optical Tether Standard)	Verified hydrostatic pressure integrity, breaking load and flex endurance 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

ITU-T G.657.B3 / IEC 60794 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 SPE-7043 Non-Kink STFOC Tether ITU-T G.657.B3 / IEC 60794 Optical (0 V) CE

Delivery form: Heavy-duty export fumigated wooden drums, steel winch reels or pre-terminated subsea assemblies
Standard lengths: 500 m, 1,000 m, 3,000 m continuous winch lengths or custom cut-to-length subsea jumpers
MOQ: 100 m (standard configurations) · 300 m (custom subsea builds)
Lead time: 2–4 weeks ex-works
Incoterms: EXW, FCA, FOB, CIF, DAP

Technical documents

Downloads

PDFSPE-7043 Non-Kink STFOC Drone Tether – technical datasheet3 sizes · construction, technical data, approvals XLSXSPE-7043 Non-Kink STFOC Tether spec data (Excel)All 3 sizes with dimensions and data, for your BOM or quotation

Revision: 2026-10-29
Updated: 2026-10-29

FAQ

Questions engineers ask first

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

What governing standard and construction define SPE-7043 Non-Kink STFOC Tether (SPE-7043 Non-Kink STFOC Drone Tether)?

SPE-7043 Non-Kink STFOC Tether (SPE-7043 Non-Kink STFOC Drone Tether) is manufactured in accordance with ITU-T G.657.B3 SPE-7043 Non-Kink STFOC Subsea Drone Optical Tether Standard for Optical (0 V) subsea,ROV and marine aquaculture service over -40 to +85 °C. Its 4-layer construction comprises bend-insensitive optical core (1×sm/mm), uv-cured acrylate primary buffer coating and subsea / marine outer protective sheath.

What is the minimum bending radius and operating temperature range for SPE-7043 Non-Kink STFOC Tether?

The minimum bending radius for SPE-7043 Non-Kink STFOC Tether is 5 × OD across its continuous operating temperature range of -40 to +85 °C, ensuring mechanical flex endurance and hydrostatic reliability in subsea winches, TMS cages and aquaculture installations.

How are the concentric layers of SPE-7043 Non-Kink STFOC Tether arranged from inside to outside?

From inside to outside, the construction sequence is: (01) Bend-Insensitive Optical Core (1×SM/MM) — ITU-T G.657.B3 bend-insensitive single-mode / multi-mode optical fiber core; (02) UV-Cured Acrylate Primary Buffer Coating — Concentric dual-layer micro-bend-resistant elastomeric primary optical buffer; (03) Non-Kink High-Modulus Dielectric Buffer Tube — Precision-extruded kink-resistant structural buffer for high-speed spool payoff; (04) Subsea / Marine Outer Protective Sheath — Black hydrolysis- & abrasion-resistant marine Polyurethane (PUR) outer sheath.

What factory test certificates are supplied with SPE-7043 Non-Kink STFOC Tether?

Every production drum of SPE-7043 Non-Kink STFOC Tether undergoes routine conductor DC resistance / optical OTDR continuity, AC high-voltage dielectric and dimensional testing per ITU-T G.657.B3 SPE-7043 Non-Kink STFOC Subsea Drone Optical Tether Standard, and is delivered with an EN 10204 3.1 factory test certificate.

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SPE-7043 Non-Kink STFOC Drone Tether

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