The Anti-Piracy Curtain uses high-powered water jets and flailing hoses to keep pirates at bay. The system is actually a two-part system. The nozzles apparently pump enough water to fill a boat at the rate of one centimeter per minute, which is easily enough to capsize it in no time. It also uses a secondary line of defense in the form of a series of hoses that thrash about wildly as water sprays out like a jet on one end.”]
Source: https://gizmodo.com/high-power-hose-security-system-will-soak-pirates-into-5904987