Published on:2026-05-24 Click:26
ROV composite neutrally buoyant tether cable. Multi-function composite design with power, signal, and fiber in a single foamed PUR neutrally buoyant ROV tether.
The ROV composite neutrally buoyant tether is a fully configurable multi-function tether cable that combines power conductors, signal twisted pairs, and optical fiber cores within a single foamed PUR neutrally buoyant jacket. The composite design allows the ROV integrator to specify exactly the conductor types, counts, and cross-sections required for their vehicle, eliminating the need for multiple separate tether cables. The foamed polyurethane (PUR) jacket uses a micro-cellular expanded jacket compound with a bulk density lower than seawater (~1.025 g/cm³), giving the cable near-zero or positive net buoyancy. This eliminates tether sag and reduces drag force on the ROV, improving vehicle manoeuvrability and reducing tether management workload during subsea operations.
| Parameter | Specification |
|---|---|
| Power Cores | Per spec (copper, size and count) |
| Signal Pairs | Per spec (twisted pairs, shielded) |
| Fiber | Per spec (SM or MM, count) |
| Jacket | Foamed micro-cellular PUR |
| Buoyancy | Neutrally buoyant (tunable) |
| Strength Member | Kevlar or Dyneema optional |
| Custom | Full BOM -- all parameters |
| Depth Rating | Per spec, up to 6,000 m |
Request datasheet, custom length, or OEM pricing: sales@rovcable.com -- Shanghai Kabel Intelligence Technology Co., Ltd.
The jacket is manufactured from a micro-cellular expanded (foamed) polyurethane compound. During extrusion, a controlled foaming agent creates millions of tiny closed-cell air pockets within the jacket wall. These air cells reduce the bulk density of the jacket below that of seawater (~1.025 g/cm³), producing positive or neutral net buoyancy. The jacket retains all the abrasion resistance, oil resistance, and flexibility of standard PUR while achieving the buoyancy needed for ROV tether applications.
Provide: (1) Electrical power: core count + cross-section + voltage; (2) Signal: pair count + AWG + shielding; (3) Fiber: SM or MM + core count; (4) Buoyancy: required buoyancy per metre (g/m) in seawater; (5) Tensile strength: required MBS (kg); (6) Overall OD target (mm) and depth rating (m); (7) Jacket colour and reel length. We will produce a full datasheet, cross-section drawing, and price.
