Name: Marinet Underwater Security Net
Brand: RBtec Perimeter Security Systems

The Marinet is a fiber optic, cut through detection underwater security barrier: an alarmed anti swimmer, diver and frogman net for both underwater and above water perimeter protection. The net itself is the sensor, so there is no gap between detection points.

The system is a crisscross array of electronic fiber optic net reinforced with Kevlar and steel cable, designed to prevent an undetected breach of waterways, ports and waterside facilities.

The net itself is the sensor: gap free detection across every panel.
Built from 5 x 5 m (16 x 16 ft) panels; each panel can act as a detection zone.
Passive system; alarms trigger on direct cut or extreme bending only.
Freestanding or attached to fixed and floating structures.

General Description

The Marinet was designed for waterways and underwater areas that require a smart barrier across the waterside approach with a low false alarm rate. It protects waterside perimeters from intruders such as speed boats, divers, floating explosive packages and other water based threats.

The sensor cable comes in grid panels with reinforced plastic clips at every juncture and a 160 x 160 mm square mesh. The clips and cable are designed so that neither can be disassembled or cut without triggering an alarm.

Unique Operational Capabilities

Easy deployment. Attaches to fixed positions such as an oil rig pole, cooling water canal wall, jetty or pier, or to floating structures such as a stabilized buoy or floating barrier.

Scalable. Fitted to the end user’s length requirements, deployable to a depth of 25 m (82 ft), and expandable as requirements change.

Integrated monitoring. Connects to the RBtec control and monitoring system via RS-485 or TCP/IP. The net is divided into detection zones defined by the end user, and any alarm is displayed on a graphic color map showing the alarming zone.

Innovative Solutions for Every Need

Purpose built perimeter detection for the industries where a breach costs the most.
Explore how RBtec fits yours:

RBtec industry water treatment aerial view 4 3

Water Utilities

Water systems answer to AWIA risk assessments while running fences around plants, reservoirs and dozens of unmanned pump stations. RBtec gives each site type a standard zoned detection layer that reports back over the telemetry the system already runs.

Water Utilities

Aerial view of a high-voltage electrical substation with transmission lines and a fenced compound

Substations and Electrical Utilities

Substations are unmanned, spread across whole service territories, and increasingly targeted — from copper theft to sabotage. RBtec turns the station fence into a zoned detection layer reporting through existing SCADA, documented for CIP-014.

Substations and Electrical Utilities

Solar Farm

Copper theft crews can strip a solar site in one night, and insurers know it. RBtec turns kilometers of PV fence into zoned detection that catches the cut before the inverters are reached, with sensing that scales from one site to a whole portfolio.

Solar Farm

Aerial view of a self-storage facility with rows of storage units and a fenced perimeter

Self-Storage Facilities

Storage facility break-ins happen after hours, through or over the fence, while cameras record quietly. RBtec IRONCLAD turns the perimeter into an alarm zone on the burglar panel you already have, so response starts while the thief is still at the fence.

Self-Storage Facilities

Aerial view of a sea port with docked ships and container yards

Sea Ports & Terminals

Ports run long landside fences and a waterside that no fence can cover, under ISPS and MTSA obligations. RBtec covers both: zoned detection on the fence line and Marinet underwater detection where the intruder arrives by water.

Sea Ports & Terminals

Aerial view of a walled private country estate with a gated driveway and surrounding farmland

Private Estates & Residences

Large private properties have long, irregular boundaries — walls, hedges, gates and open ground — and no security team on site. RBtec detects an intruder at the boundary and reports where, before they reach the house.

Private Estates & Residences

Oil, Gas & Petrochemical

Refineries, terminals and tank farms run some of the longest fences in industry, often around hazardous areas where powered electronics cannot go. RBtec covers the distance with passive fiber sensing and keeps every active component safely outside the zone.

Oil, Gas & Petrochemical

Aerial view of a monitored border corridor with a patrol road

Military & Border Security

On a border or a base, the adversary plans around what they can see. RBtec buried fiber gives them nothing to plan against, and fence sensing, ground sensors and protected distribution close the layers above and behind it.

Military & Border Security

Aerial view of a distribution and fulfillment centre with a fenced trailer yard

Logistics & Distribution Centers

Cargo theft breaks records every year, and it starts at the fence around the trailer yard. RBtec turns that fence into a zoned alarm layer that satisfies TAPA FSR auditors and feeds the cameras your guards already watch.

Logistics & Distribution Centers

RBtec industry government campus aerial view 4 3

Government & Classified Networks

A classified network is only as secure as the cable runs between secure rooms. RBtec alarmed carrier PDS protects SIPRNet and other classified circuits between SCIFs and connected buildings, in line with CNSSI 7003 and without concrete encasement.

Government & Classified Networks

Technical Specifications

Operating temperature	-40°C to +70°C (-40°F to +158°F)
Cable type	Fiber optic based wire
Number of fibers	2
Inner jacket	Polyethylene
Outer jacket	PVC (UV resistant)
Maximum tensile strength	1,500 N short term
Maximum crush resistance	100 N/cm
Minimum bend radius (operating)	25 mm
Cable diameter	5.5 mm
Standard mesh size	160 x 160 mm (6.3 x 6.3 in)
Standard panel size	5 x 5 m (16.4 x 16.4 ft)
Weight per 5 x 5 m panel	25 kg (55 lb)
Clips	Sealed, molded, polycarbonate reinforced
Detection resolution	By zone
Maximum deployment depth	25 m (82 ft)
Integration	RS-485 or TCP/IP to RBtec control and monitoring