46 C.F.R. § 32.15-30 Radar—T/OC.
Title 46 - Shipping
All tankships of 1,600 gross tons and over in ocean or coastwise service must be fitted with a marine radar system for surface navigation. Facilities for plotting radar readings must be provided on the bridge. [CGD 74–074, 42 FR 5963, Jan. 31, 1977]
Title 46: Shipping
PART 32—SPECIAL EQUIPMENT, MACHINERY, AND HULL REQUIREMENTS
Subpart 32.15—Navigation Equipment
§ 32.15-30 Radar—T/OC.