46 U.S.C. § 3708
Self-propelled tank vessel minimum standards
A self-propelled tank vessel of at least 10,000 gross tons as measured under section 14502 of this title , or an alternate tonnage measured under section 14302 of this title as prescribed by the Secretary under section 14104 of this title shall be equipped with—
(1)
a dual radar system with short-range and long-range capabilities, each with true-north features;
(2)
an electronic relative motion analyzer that is at least functionally equivalent to equipment complying with specifications established by the Secretary of Transportation;
(3)
an electronic position-fixing device;
(4)
adequate communications equipment;
(5)
a sonic depth finder;
(6)
a gyrocompass; and
(7)
up-to-date charts.
( Pub. L. 98–89 , Aug. 26, 1983 , 97 Stat. 524 ; Pub. L. 104–324, title VII, § 717 , Oct. 19, 1996 , 110 Stat. 3937 .)