ANCHOR CHAIN FOR FUTURE U.S. NAVY VESSELS

Large anchor chain used by the U.S. Navy has been made by the die lock forging process developed at the Boston Naval Shipyard. This facility has been closed, and no commercial manufacturer in this country is currently making chain of the size needed (4-3/4 in.) for large aircraft carriers. The options open to the Navy are discussed. These options include the manufacture of die lock chain by industry, utilizing the dies being stored by the Navy. Welded chain could be made in the United States or purchased abroad. For the long term, the committee recommends the rapid development of welded chain, starting with the smaller sizes, for use by the Navy. The immediate problem, supplying chain to carriers under construction or expected to be built soon, should be solved by a resumption of die lock chain manufacture if equipment (large presses, heat treating furnaces, and chain transport), dies, and skills are available.

• Supplemental Notes:
  • By the Committee on Anchor Chain Manufacture.
• Corporate Authors:

  National Materials Advisory Board

  2101 Constitution Avenue, NW
  Washington, DC  United States  20418

  Department of Defense

  1400 Wilson Boulevard
  Arlington, VA  United States  22209

  National Aeronautics and Space Administration

  600 Independence Avenue, SW
  Washington, DC  United States  20546
• Publication Date: 1980-6

Media Info

• Pagination: 49 p.

Subject/Index Terms

• TRT Terms: Butt welds; Chains; Failure; Failure analysis; Forging; Military vessels; Mooring; Mooring anchors; Moorings; Nondestructive tests
• Old TRIS Terms: Anchor chains; Flash welding
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00316225
• Record Type: Publication
• Report/Paper Numbers: NMAB-371
• Contract Numbers: MDA-903-78-C-0038
• Files: TRIS
• Created Date: Oct 8 1980 12:00AM