SEHONG

SOUTH KOREA

Sehong is a South Korean engineering and manufacturing company specializing in marine hull protection systems, anti-fouling solutions, and bridge automation technologies. It is a leading global brand, particularly in Impressed Current Cathodic Protection (ICCP) systems—which prevent seawater-induced corrosion—Marine Growth Prevention Systems (MGPS) that stop marine organisms from clogging piping, and shaft earthing devices (SED).

Distinguished by the advanced ship automation systems and bridge navigation solutions it has offered since the 2000s, Sehong is a trusted brand that provides high-standard safety and asset protection to thousands of commercial vessels and naval ships worldwide, including those built by South Korea's major shipyards.

PRODUCT CATEGORIES

Impressed Current Cathodic Protection (ICCP) Marine Growth Prevention System (MGPS) Shaft Earthing Device (SED)

Sehong Impressed Current Cathodic Protection (ICCP) is an advanced marine system designed to protect ship hulls and offshore structures from corrosion. The system operates using a direct current (DC) power unit, inert (mixed metal oxide) anodes, and reference electrodes. It completely halts rusting and electrolysis by delivering a controlled electrical charge through the water to the metal surface. While reference electrodes continuously monitor the voltage of the metal surface relative to the water, an automatic control unit self-adjusts the current in response to changing water conditions. Widely preferred for vessels such as tankers, cargo ships, and passenger liners, as well as for offshore oil platforms, this method safeguards all submerged metal surfaces against galvanic damage.

The Sehong Marine Growth Prevention System (MGPS) is an advanced system designed to prevent the accumulation of mussels, barnacles, algae, and other marine organisms within a ship's seawater piping. The system consists of specialized copper, aluminum, or iron anodes installed in sea chests or seawater strainers, along with a control panel that supplies a low-voltage current to them. Its operating principle is straightforward: copper anodes dissolve via the electric current and release ions into the water, effectively preventing microorganisms and larvae from adhering to pipe surfaces. Simultaneously, dissolving aluminum or iron anodes form a protective layer on the inner pipe surfaces, thereby inhibiting corrosion and rust. Offering superior safety through its pressure-resistant and leak-proof design, the system ensures the efficient operation of ship cooling systems without the need for crew intervention, thanks to its fully automated functionality.

Sehong Şaft Topraklama Cihazı (SED), gemi sevk sistemlerini zararlı kaçak akımlardan korumak amacıyla tasarlanmış yüksek verimli bir güvenlik sistemidir. Bu sistem; ara pervane şaftı üzerine monte edilen gümüş alaşımlı bir kayıcı halka (slip ring), yüksek saflıkta gümüş-grafit malzemeden üretilen fırçalar ve bu fırçaların halkaya sürekli temas etmesini sağlayan yaylı fırça tutuculardan oluşur. Şaft hattı ile tekne gövdesi arasındaki elektrik potansiyeli farkı ise sisteme entegre bir milivolt metre içeren izleme paneli üzerinden anlık olarak takip edilir.Cihazın temel işlevi, pervane şaftının dönüşü sırasında oluşan statik elektriği ve kaçak akımları güvenli bir şekilde gemi gövdesine ileterek kıvılcım erozyonunu (spark erosion) önlemektir. Sehong SED, ana makine yataklarında, dişli kutularında ve şaft bilyelerinde meydana gelebilecek elektriksel ark ve oyulma (pitting) hasarlarının önüne geçer. Bu sayede mekanik parçaların aşınmasını azaltır, ani arıza risklerini minimuma indirir ve tahrik sistemi ekipmanlarının kullanım ömrünü önemli ölçüde uzatır.