UNDERWATER SHIP HULL INSPECTION

Navy managers need accurate information in order to make cost effective decisions. In the case of ship hull repair or maintenance decisions, this information can often be obtained through Nondestructive Examination (NDE) of the hull. Newly developed NDE hardware and techniques now permit many inspections to be performed on waterborne ships, thus avoiding the cost and/or necessity of dry-docking for inspection. These underwater inspections are also used to forecast accurately hull work requirements for upcoming planned overhauls, to plan and to evaluate underwater repair work, and to monitor the status of known defects in hull structures. Underwater NDE techniques being developed at the Naval Coastal Systems Center (NCSC) under Naval Sea Systems Command (NAVSEA) sponsorship include stereophotography, magnetic particle inspection, ultrasonic thickness gaging and flaw detection, and electromagnetic weld inspection. Individual techniques are currently in various stages of qualification as Navy approved procedures. Throughout the development process at NCSC, field work on Navy ship hulls has been undertaken in order to assure the techniques' operational effectiveness, accuracy, reliability, and utility to Navy managers. Thus, a substantial body of real world data exists. This paper describes procedures which are being qualified, techniques under development, and cites examples of inspections performed on waterborne ships.

  • Availability:
  • Supplemental Notes:
    • ASNE Day 1980 Technical Paper: Session No. 4--Maintenance and Repair.
  • Corporate Authors:

    American Society of Naval Engineers

    Suite 507, 1012 14th Street, NW
    Washington, DC  USA  20005
  • Authors:
    • Mittleman, J
    • Wyman, D
  • Publication Date: 1980-4

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00312236
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 26 1980 12:00AM