EVALUATION OF THE VERTICAL SECTOR LIGHT REQUIREMENTS FOR UNMANNED BARGES; FINAL REPT

A study was conducted to determine whether or not navigation safety is affected by the size of the vertical sector of navigation lights on unmanned barges. Off-the-shelf equipment was purchased and tested to ascertain the performance of existing lighting equipment against COLREGS requirements. The purpose served by vertical sector was defined, and a 'minimum' luminous intensity distribution was created as a standard against which off-the-shelf and COLREGS lights could be judged. An analysis was performed to determine the power requirement for a COLREGS light. None of the off-the-shelf equipment tested met the COLREGS specification. Some exceeded the 'minimum' luminous intensity distribution with up to a 1.5 degree margin for error. The COLREGS luminous intensity distribution provided a 4.5 degree margin for error. The power needed to meet all the requirements of the COLREGS is feasible, but not easy to produce with batteries.

  • Corporate Authors:

    Coast Guard

    Office of Research and Development
    Washington, DC  United States 
  • Authors:
    • Fisher, M L
  • Publication Date: 1991-3

Language

  • English

Media Info

  • Pagination: 40 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00666699
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: CGR/DC-11/91; USCG-D-01-92
  • Files: TRIS
  • Created Date: Oct 3 1994 12:00AM