Published on:2026-05-24 Click:23
10-core (5 twisted pairs) neutrally buoyant ROV tether umbilical. Foamed PUR jacket for multi-channel data ROV tether requiring 5 independent shielded pairs.
The 10-core 5-pair neutrally buoyant ROV umbilical provides five independent shielded twisted pairs for comprehensive multi-channel data communication in a foamed PUR buoyant tether. Five pairs can simultaneously carry Ethernet (100BASE-TX), RS-485 control, RS-232, analog signals, and a spare/redundant channel, giving the ROV a full data bus in a compact neutral-buoyancy tether. 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 |
|---|---|
| Pairs | 5 x 2 x 24AWG shielded twisted pairs (10 conductors) |
| Pair Shielding | Individual foil + drain wire |
| Overall Shield | Braid (optional) |
| Jacket | Foamed micro-cellular PUR |
| Buoyancy | Neutrally buoyant |
| Bandwidth | 100 MHz per pair (Cat5e grade) |
| Voltage Rating | 300V |
| Custom | Core size, shielding, Kevlar, connector, 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.
1000BASE-T (Gigabit Ethernet) requires all four pairs of a Cat5e cable simultaneously. Since this cable has 5 independent pairs (not grouped as 4-pair sets), you can use any 4 pairs for a single Gigabit Ethernet channel and the 5th pair for RS-485 or analog signals. Cat5e 24AWG pairs are specified to meet 1000BASE-T requirements to 100 m.
