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Jason
Standard: Sonardyne Ranger USBL
Optional: LBL transponder or relay transmitter/receiver
Emergency: 7-12 kHz vehicle-powered or battery-operated
Bottom tracking: RDI 300 kHz Doppler Velocity Log, 30-100m range
Medea
Standard: Sonardyne Ranger USBL
Optional: LBL transponder or relay transmitter/receiver
Emergency: 7-12 kHz vehicle-powered or battery-operated