46 C.F.R. § 141.105 – Applicability and delayed implementation for existing vessels.

(a) This part applies to all towing vessels subject to this subchapter.
1. (1) An existing towing vessel must comply with the requirements in this part no later than either July 20, 2018 or the date the vessel obtains a Certificate of Inspection (COI), whichever date is earlier.
2. (2) The delayed implementation provisions in paragraph (a)(1) of this section do not apply to a new towing vessel.
(b) A towing vessel on an international voyage, subject to SOLAS (incorporated by reference, see § 136.112 of this subchapter), must meet the applicable requirements in subchapter W of this chapter.
(c) Towing vessels in compliance with SOLAS Chapter III will be deemed in compliance with this part.