NEW APPLICATION OF ACOUSTICAL TRACKING SYSTEM YIELDS EXTENDED CAPABILITIES

The RS-7 Digital Acoustic Position Indicator has been in use for some time on drilling vessels as a position indicator for re-entry functions and as a control input source to command dynamic vessel position (DP) systems. It also has the capability of providing riser angle and riser/BOP stack differential angle information and is finding increasing utilization in these roles. The Diff-2 option extends the capability of the RS-7 series to permit the system to accurately measure, and simultaneously display with a common range, the position of a surface vessel, a fixed ocean floor reference and a variable depth submersible, without sacrificing the performance and features of the basic system. This will allow the surface vessel to operate in a known positional relationship to the sumbersible thus preventing its being fouled or pulled off its intended course or location by its tether cable to the ship. A description of the system and its operation is given.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00300608
• Corporate Authors:

  Petroleum Publishing Company

  1200 South Post Oak Road
  Houston, TX  United States  77027
• Authors:
  • Robertson, R
• Publication Date: 1977-1

Media Info

• Pagination: p. 46-48
• Serial:
  • Offshore
  • Volume: 37
  • Issue Number: 1
  • ISSN: 0030-0608

Subject/Index Terms

• TRT Terms: Dynamic positioning; Navigation computers; Position fixing; Remote control
• Old TRIS Terms: Acoustic position finding; Computer aided navigation; Positioning control systems; Remote control systems
• Subject Areas: Marine Transportation; Operations and Traffic Management;

Filing Info

• Accession Number: 00149607
• Record Type: Publication
• Source Agency: Petroleum Publishing Company
• Files: TRIS
• Created Date: Apr 13 1977 12:00AM