46 CFR § 140.625 - Navigation underway.

---
identifier: "/us/cfr/t46/s140.625"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "46 CFR § 140.625 - Navigation underway."
title_number: 46
title_name: "Shipping"
section_number: "140.625"
section_name: "Navigation underway."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "M"
subchapter_name: "TOWING VESSELS"
part_number: "140"
part_name: "OPERATIONS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "46 U.S.C. 3103, 3301, 3306, 3308, 3316, 8104, 8904; 33 CFR 1.05; DHS Delegation 0170.1."
regulatory_source: "USCG-2006-24412, 81 FR 40101, June 20, 2016, unless otherwise noted."
cfr_part: "140"
---


# 140.625 Navigation underway.

(a) At all times, the movement of a towing vessel and its tow must be under the direction and control of a master or mate (pilot) properly licensed under subchapter B of this chapter.

(b) The master or officer in charge of a navigational watch must operate the vessel in accordance with the conditions and restrictions stated on the COI and the TSMS applicable to the vessel.

Note to § 140.625. Certain towing vessels subject to § 140.625 are also subject to the requirements of 33 CFR 164.78.