7832-000-03

Sonardyne UK (Head Office) T. +44 (0) 1252 872288 F. +44 (0) 1252 876100 E. sales@sonardyne.com www.sonardyne.com Datasheet ROV-Homer Target Relocation System Description Part of Sonardyne’s Coastal Acoustic product range, ROV-Homer is a miniature range and direction guidance system for small or large ROVs. Based on proven acoustic principles, it is specifically designed for fast, efficient relocation of underwater targets such as lost diving bells, divers, seabed equipment or small objects. information is communicated back to the surface, via the ROV's umbilical, and is displayed on the user's PC. It indicates the range to the target and in which direction to turn in order to fly the ROV directly towards the selected transponder. battery pack making them ideal for use as permanent markers. Each transponder is individually encoded enabling many transponders to be used on the same site to unambiguously mark many targets. It enables points of interest to be marked with an acoustic transponder so that an ROV pilot can be guided straight back to the target even in zero visibility. The system substantially reduces search time and therefore operating costs. The system consists of an ROV mounted range and direction unit, PC control software and small, lightweight marker transponders. Once the pilot has selected the target he wishes to 'home' into, the ROV unit begins interrogating the designated transponder to determine its range and direction. The The ROV mounted unit is accurately aligned with the ROV's heading sensor and is connected to spare cores either on the ROV's umbilical or to the ROV's communications multiplexer. The electronics inside the unit incorporate power regulation, an RS232 interface and a microprocessor all of which are galvanically isolated from the ROV's electrical system. 12V to 24V DC power supply is connected via the same connector. On smaller ROVs which do not have communications multiplexers and therefore cannot support RS232, a RS485 interface can be provided. Key Features • Simple, low cost acoustic guidance system for ROVs • 4,000 metre or 12,000 metre versions available • Reduces search time and ROV operating costs • Critical point marking - tools, valve heads, field joints... • Emergency relocation - divers, diving bells, ROVs... • Accurately measures distances of up to 750 metres • Allows operation in zero visibility • System operates with up to 256 small, low cost transponders • Works with AODC Emergency Transponders The transponders are compact so that they can be easily fitted to divers or equipment and have a long life Sonardyne UK (Head Office) T. +44 (0) 1252 872288 F. +44 (0) 1252 876100 E. sales@sonardyne.com www.sonardyne.com Specifications ROV-Homer Target Relocation System ROV Range and Direction Unit Depth rating Operating Frequency Transmit Source Level Directional Indication (10° Wide Receive) Range Resolution Maximum Operating Range Power Supply Quiescent Life Position Update Interval Mechanical Construction Diameter (LxDia) Weight in Air Weight in Water Transponder Options Depth Rating Operating Frequency Battery Life (Listening) Mechanical Construction Dimensions (LxDia) Weight in Air Weight in Water . Type 7832-000-01 4,000 Metres HF (35–55kHz) 90dB re 1µPa @1m Left, Right or Ahead 0.1 Metre 750 Metres (Dependent on conditions) 12V – 24V DC Continuous when powered from ROV 1.5 seconds Anodised Aluminium Alloys and Plastics 272mm (10.7”) X 72mm (2.85”) 2.1kg 1.3kg Type 7815-000-7 500 Metres HF (33–35kHz) 2 years (Alkaline) 4.5 years (Long-Life Lithium) Aluminium Alloys and plastics 441mm (17.3”) x 64mm (2.5”) 1.1kg 0.75kg Type 7832-000-03 12,000 Metres HF (35–55kHz) 90dB re 1µPa @1m Left, Right or Ahead 0.1 Metre 750 Metres (Dependent on conditions) 12V – 24V DC Continuous when powered from ROV 1.5 seconds Titanium grade 5 370mm (14.57”) X 100mm (39.4”) 8.0kg 5.8kg Type 7835-000-05 12,000 Metres HF (33–35kHz) 2 years (Alkaline) 4.5 years (Long-Life Lithium) Titanium grade 5, Anodised 267mm (10.5”) x 80mm (3.1”) 5.5kg 3.8kg Type 7835-000-01 4,000 Metres HF (33–35kHz) 2 years (Alkaline) 4.5 years (Long-Life Lithium) Aluminium Alloys and S/steel 353mm (13.8”) x 64mm (2.5”) 1.9kg 1.2kg Specifications subject to change without notice - 10/2006