Specially designed to safeguard ships sailing across high-risk sea area. The fence is steel welded with galvanized surface treatment, effective to prevent pirates or stealers to climb onboard. It can work for much longer time with effective anti-corrosive function, and easily installed firmly one by one along deck fishplate, gunnels with wing bolts. 2-spikes type fence and 4-spikes type fence are available, and can be designed other type as per requirement.