Around UST Round About Diobu Portharcourt, Rivers State
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Hammar H20 Hydrostatic Release Unit (HRU), a critical marine safety device designed to automatically release liferafts or EPIRBs if a vessel sinks.It activates automatically via water pressure at a depth of approximately 1.5 to 4 meters, cutting a securing bolt to deploy emergency equipment.The unit shown has a validation label showing expiration years from 2026 to 2029; these units typically require replacement every two years.