. Guards Guard Guard-HD-T Guard-HD-F Guard HD Hydrophone Guards Guards are used to protect your icListen hydrophone elements from getting damaged as well as providing alternative mounting and handling options. Talk to a sales rep Compatible Product Lucy II Hydrophone Guards Launch Box Subsea Tripod Subsea Power Bank Ocean Sonics Buoy Smart Nodes Inline Hydrophone Frame Battery Pack Float Collar Extension Cables Ethernet Repeater icListen AF icTalk icListen HF Previous Next Product Documents Mechanical drawings Download User guide Download Guard Applications Real Time Situational Awareness Accoustic Ranges SAR-Pinger Localizations Marine Protected Areas Observatories Earthquake & Tsunamis Scientific Research & Discovery Pile Driving Pipeline Leak Detection Subsea Asset Inspection Dredging Environmental Impact Assessment Marine Mammal Monitoring Impact Noise Monitoring Machine Health Monitoring Construction Monitoring Underwater Radiated Noise Measurement