46 CFR § 143.580
Alternative electrical installations
April 15, 2021
In lieu of meeting the requirements of §§143.555 through 143.575, a vessel may meet the following:
(a) ABS Rules for Building and Classing Steel Vessels Under 90 Meters (295 Feet) in Length (incorporated by reference, see §136.112 of this subchapter), Part 4, Chapter 6; or
(b) ABS Rules for Building and Classing Steel Vessels for Service on Rivers and Intracoastal Waterways (incorporated by reference, see §136.112 of this subchapter), Part 4, Chapter 5, if they operate exclusively on rivers or intracoastal waterways.