The Marine Oil, Gas, Water Sensor is a compact, multi-parameter detection device designed for shipboard fluid monitoring. It reliably identifies the presence and concentration of oil, gas, and water in bilge water, fuel systems, and cargo tanks. Using advanced capacitance or optical technology, the sensor provides real-time alarms and output signals to prevent pollution and ensure regulatory compliance (MARPOL). Built with corrosion-resistant materials and IP66 enclosure, it withstands vibration, humidity, and salt spray. Ideal for oily water separators, fuel leak detection, and tank level monitoring. Simple to install and maintain, it enhances marine safety and environmental protection onboard any vessel.