Sec. 80.825  Radar installation requirements and specifications.

    (a) Radar installations on board ships that are required by the 
Safety Convention or the U.S. Coast Guard to be equipped with radar must 
comply with either the document referenced in paragraph (a)(1) of this 
section or the applicable document referenced in paragraphs (a)(2) 
through (a)(4) of this section. These documents are incorporated by 
reference in accordance with 5 U.S.C. 552(a). The documents contain 
specifications, standards and general requirements applicable to 
shipboard radar equipment and shipboard radar installations. For 
purposes of this part, the specifications, standards and general 
requirements stated in these documents are mandatory irrespective of 
discretionary language. Radar documents are available for inspection at 
the Commission Headquarters in Washington, DC, or may be obtained from 
the Radio Technical Commission for Maritime Services (RTCM), P.O. Box 
19087, Washington, DC 20036.
    (1) Radar installed on ships of 500 gross tons and upwards on or 
after July 1, 1988, must comply with the provisions of RTCM Paper 133-
87/SC 103-33 including Appendix A. Title: ``RTCM Recommended Performance 
Specification for a General Purpose Navigational Radar Set for 
Oceangoing Ships of 500 Gross Tons and Upwards for New Radar 
Installations.'' Title of Appendix A: ``General Purpose Shipborne 
Navigational Radar Set for Oceangoing Ships Design and Testing 
Specifications.'' Document originally approved by RTCM August 15, 1985 
and revised May 15, 1987.
    (2) Radar installed on ships of 1,600 gross tons and upwards on or 
before April 27, 1981, must comply with the

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provisions of Volume II of RTCM Special Committee No. 65 Final Report; 
Part II. Title: ``Performance Specification for a General Purpose 
Navigational Radar Set for Oceangoing Ships of 1,600 Tons Gross Tonnage 
and Upwards for Ships Already Fitted.'' Document approved by RTCM July 
18, 1978; effective as FCC requirement on April 27, 1981.
    (3) Radar installed on ships of 1,600 gross tons and upwards after 
April 27, 1981 and before July 1, 1988, must comply with the provisions 
of Volume II of RTCM Special Committee No. 65 Final Report with Change 1 
entered; Part I including Appendix A. Title: ``Performance Specification 
for a General Purpose Navigational Radar Set for Oceangoing Vessels of 
1,600 Tons Gross Tonnage and Upwards for New Radar Installations.'' 
Title of Appendix A: ``General Purpose Shipborne Navigational Radar Set 
for Oceangoing Ships Design and Testing Specifications.'' Document 
approved by RTCM July 18, 1978; effective as FCC requirement on April 
27, 1981.
    (4) Ships between 500 and 1,600 gross tons constructed on or after 
September 1, 1984, with radar installed before July 1, 1988, must comply 
with Regulation 12, Chapter V of the Safety Convention and with the 
provisions of Inter-Governmental Maritime Consultative Organization 
(IMCO) [Now International Maritime Organization (IMO)] Resolution 
A.477(XII). Title: ``Performance Standards for Radar Equipment.'' 
Adopted by IMCO November 19, 1981.
    (b) For ships of 10,000 gross tons or more and any other ship that 
is required to be equipped with two radar systems, each of these systems 
must be capable of operating independently and must comply with the 
specifications, standards and general requirements established by 
paragraph (a) of this section. One of the systems must provide a display 
with an effective diameter of not less than 340 millimeters (13.4 
inches) (16-inch cathode ray tube). The other system must provide a 
display with an effective diameter of not less than 250 millimeters (9.8 
inches) (12-inch cathode ray tube).
    (c) Recommendations for tools, test equipment, spares and technical 
manuals are contained in Part IV of Volume III of the RTCM SC-65 Final 
Report approved by RTCM July 18, .
[52 1978 FR 35247 , Sept. 18, 1987]