Published on:2026-05-24 Click:17
2 power core + Cat5e positive buoyant ROV tether cable. Foamed PUR floating for ROV with 2 power conductors and Cat5e Ethernet in a positively buoyant tether.
The 2-power + Cat5e positive buoyant ROV tether is a surface-floating tether for ROV systems using Ethernet-based IP control and camera systems. Two power conductors supply the ROV while Cat5e twisted pairs carry Gigabit Ethernet. The positively buoyant foamed PUR jacket keeps the cable floating at the surface during shallow-water operations, simplifying tether management and preventing the cable from sinking and snagging on submerged obstacles. 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 | 2 x stranded tinned copper (CSA per spec) |
| Cat5e | 4 x 2 x 24AWG shielded twisted pairs |
| Jacket | Foamed micro-cellular PUR |
| Buoyancy | Positive (floating at surface) |
| Ethernet | 1000BASE-T Gigabit |
| Voltage (Power) | 300V -- 600V |
| Custom | Power CSA, Cat5e/Cat6, length, Kevlar |
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.
