Published on:2026-05-24 Click:19
8 power cores + 1 Cat5e ROV tether, neutrally buoyant foamed PUR. 8 independent power channels and Cat5e Ethernet for complex high-power ROV applications.
The 8-power + Cat5e neutrally buoyant ROV tether is a high-complexity tether for large work-class or multi-payload ROVs requiring eight independent power supply channels (e.g., 6 thrusters + 2 payload buses) alongside Gigabit Ethernet for IP control and sensor data. The foamed PUR jacket maintains neutral buoyancy despite the large conductor count. 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 | 8 x stranded tinned copper (CSA per spec) |
| Cat5e | 4 x 2 x 24AWG twisted pairs (Cat5e) |
| Total Conductors | 8 power + 8 Cat5e = 16 |
| Jacket | Foamed micro-cellular PUR |
| Buoyancy | Neutrally buoyant |
| Power Zones | 8 independent |
| Custom | Core CSA, buoyancy, Kevlar, length |
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.
Yes. Buoyancy (positive, neutral, or slightly negative) is tuned by adjusting the foam cell density in the jacket compound and the jacket wall thickness. Specify the required net buoyancy per metre (in g/m) and the water salinity (fresh / brackish / seawater) when ordering. We can also add a Kevlar or Dyneema strength member to increase tensile strength without significantly changing buoyancy.
