CFR › Title 46 › Part 108 › §108.71746 CFR §108.717Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkEach self-propelled unit of 1,600 gross tons and over in ocean or coastwise service must have—(a)A marine radar system for surface navigation; and(b)Facilities on the bridge for plotting radar readings.