PDK81601-2*16AWG+2*20AWG Single-Sheath Buoyancy Cable – Hybrid Power/Control, Bare Copper, PE Insulation, LCP Braid, TPU Jacket, For ROVs & Subsea Floats

This PDK81601 single-sheath buoyancy cable is specifically engineered for underwater and floating applications requiring a combination of medium‑current power delivery, auxiliary control circuits, and lightweight flotation – all within a compact, single‑jacket construction. It integrates two 16 AWG (approx. 1.31 mm²) power conductors for efficient energy transmission and two 20 AWG (approx. 0.52 mm²) auxiliary conductors for low‑current control or sensor signals – a hybrid configuration well‑suited for ROV tether sections, subsea instrument nodes, and marine observation systems.

All conductors are bare copper to minimize resistance and voltage drop over extended cable runs. PE (Polyethylene) provides primary insulation with excellent dielectric properties, very low moisture absorption, and stable performance across a wide temperature range. The cable is reinforced with an LCP (Liquid Crystal Polymer) braid – a high‑strength, low‑creep, ultra‑low‑moisture‑absorption material that delivers exceptional tensile capacity and cut resistance while maintaining a lightweight profile. The outer jacket is extruded from TPU (Thermoplastic Polyurethane) , offering outstanding abrasion, hydrolysis, and oil resistance, as well as flexibility for handling and deployment. Through specialized material selection and construction techniques, the cable achieves near‑neutral to positive buoyancy in seawater, reducing drag on subsea vehicles and simplifying flotation management. This cable is ideal for ROV tether sections, subsea sensor networks, oceanographic moorings, and marine renewable energy systems – where reliable hybrid power/control transmission, lightweight flotation, and mechanical durability are essential.

Key Features – Bare Copper Conductors, PE Insulation, LCP Braid, TPU Sheath

Bare copper conductors – two 16 AWG stranded power cores for efficient current delivery (lights, sonar, small thrusters); two 20 AWG auxiliary cores for low‑current control or sensor signals; bare copper ensures maximum conductivity and minimal signal attenuation.

PE insulation – rated -40°C to +105°C; low dielectric constant, negligible moisture uptake, and resistance to seawater, acids, and alkalis – ensuring stable insulation performance over long‑term immersion.

LCP braid reinforcement – liquid crystal polymer braid provides high tensile strength, minimal creep, and ultra‑low moisture absorption (0.04%), enhancing mechanical durability without adding significant weight.

TPU outer sheath – polyurethane jacket delivers exceptional abrasion, cut, tear, and hydrolysis resistance; remains flexible even at low temperatures and resists oils, greases, UV, and marine fouling.

Buoyant construction – optimized material selection and construction techniques provide near‑neutral to positive buoyancy in seawater, reducing drag on subsea vehicles and eliminating the need for additional flotation devices.

Watertight integrity – pressure‑resistant construction prevents water migration along the cable, ensuring reliable operation under hydrostatic pressure.

Compact and flexible – single‑sheath design maintains a manageable diameter and good flexibility for easy routing, spooling, and deployment.

Ideal For

ROV and AUV tether sections requiring hybrid power (16 AWG) and control/sensor lines (20 AWG) with buoyant characteristics

Subsea floating sensor arrays and oceanographic drifters needing low‑drag, lightweight interconnect

Underwater camera and lighting systems with separate power and control/serial links

Marine renewable energy monitoring (wave, tidal) with submerged, buoyant cabling

Military expendable surveillance cables and acoustic arrays requiring positive buoyancy

Any subsea application demanding hybrid power/control transmission + buoyant/lightweight characteristics + LCP mechanical reinforcement

Conclusion

This PDK81601 single‑sheath buoyancy cable delivers an optimal balance of power capacity, control flexibility, lightweight flotation, and mechanical durability. The combination of bare copper conductors (16 AWG + 20 AWG), PE insulation, LCP braid reinforcement, and a rugged TPU sheath ensures reliable, low‑drag operation in demanding marine environments. It is an ideal solution for ROV tethers, subsea instrumentation, and ocean observation networks.

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