Published on:2026-05-24 Click:24
Bright orange foamed PUR 4-SM fiber armoured ROV floating tether. High-visibility orange, armoured jacket, 4 single-mode fibers for high-bandwidth ROV tether applications.
The bright orange armoured 4-SM fiber floating ROV tether combines four OS2 single-mode fiber cores (for dual-redundant 10 Gbps+ data links) with an armoured strength core (steel or Kevlar) for tensile load bearing, all within a bright orange foamed PUR jacket that provides positive buoyancy and high surface visibility. Orange is the secondary standard colour for ROV tethers (alongside yellow) and is particularly favoured for offshore and maritime operations. 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 |
|---|---|
| Fiber | 4 x SM OS2 (9/125 μm) in loose tube |
| Armour Core | 1 x steel wire or Kevlar (MBS per spec) |
| Outer Jacket | Foamed micro-cellular PUR |
| Jacket Colour | Orange (high visibility) |
| Buoyancy | Positive (floating at surface) |
| Electrical Conductors | Per spec (optional) |
| Depth Rating | Up to 6,000 m |
| Custom | Fiber count, MBS, electrical cores, 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.
4 fibers provide two fully independent duplex fiber channels: (1) primary 10 Gbps link for HD/4K video and Ethernet; (2) redundant/backup fiber link for safety-critical control data. Having redundancy is important for work-class and offshore ROVs where a single fiber break would abort the mission. The backup fiber can automatically take over within milliseconds using optical switch modules.
