Published: 2026-08-25
The demand for underwater video surveillance has surged in recent years, with farms, docks, hydroelectric stations, and bridge pier inspections all installing it. Many people simply throw ordinary outdoor network cables into the water, and they become useless after a few months—not because the network is bad, but because the cables can't withstand it.
Ordinary network cable sheaths are mostly made of PE or PVC, and waterproofing relies on the integrity of the sheath. Once dragged or scratched, water seeps in through the damaged area. When the twisted pair gets damp, attenuation increases sharply, the video starts experiencing packet loss and lag, and eventually the connection is completely lost. Seawater-resistant network cables have been reinforced in three areas:
First, the sheath. It uses waterproof-grade sheath material, and the sheath's resistance remains stable even after being soaked in water for several months. It does not absorb water or soften.
Second, shielding and filling. There are many interference sources in the underwater environment, so the shielding layer (aluminum foil plus braiding) must be complete, and the cable core must be densely filled to prevent moisture from laterally seeping through gaps.
Third, tensile strength and weather resistance. Underwater deployment must withstand water flow impact and dragging, so tensile fibers are added; sections exposed to ultraviolet light require weather-resistant sheathing.
Selection recommendation: For underwater monitoring, first clarify the laying depth, whether it will be moved or dragged, and whether tensile resistance is required. For fixed laying, choose waterproof shielded network cables. For scenarios involving movement or dragging, choose seawater-resistant network cables with tensile elements. Shanghai Suoqi's seawater-resistant network cables support Cat 5e/6 and can customize the sheath and tensile structure according to water depth and dragging conditions.
About Shanghai Suoqi
Shanghai Suoqi Electric Wire & Cable Co., Ltd. is a specialized cable enterprise focusing on the research and development, design, production, and sales of special flexible cables. The company's products cover a series including reel cables, flat cables, drag chain cables, encoder cables, polyurethane cables, seawater-resistant cables, seawater-resistant network cables, and high-altitude vehicle cables, which are widely used in ports machinery, mining, industrial automation, marine engineering, and other fields. For more product information or inquiries, please call 13311756197 (same number on WeChat).