33 CFR § 401.35 - Navigation underway.

---
identifier: "/us/cfr/t33/s401.35"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "33 CFR § 401.35 - Navigation underway."
title_number: 33
title_name: "Navigation and Navigable Waters"
section_number: "401.35"
section_name: "Navigation underway."
chapter_name: "GREAT LAKES ST. LAWRENCE SEAWAY DEVELOPMENT CORPORATION, DEPARTMENT OF TRANSPORTATION"
part_number: "401"
part_name: "SEAWAY REGULATIONS AND RULES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
cfr_part: "401"
---


# 401.35 Navigation underway.

Every vessel transiting between C.I.P. 2 and Tibbetts Point and between C.I.P. 15 and 16 shall:

(a) Man the propulsion machinery of the vessel, including the main engine control station;

(b) Operate the propulsion machinery so that it can respond immediately though its full operating range;

(1) Vessels equipped with an Engine Power Limitation system (EPL) or Shaft Power Limitation system (ShaPoLi) shall override the EPL or ShaPoLi while transiting at the Seaway.

(2) For vessels equipped with the ability to shift upward the main engine limitation from the engine control station (*e.g.,* increase limitation button), all members of the bridge team must be aware of this functionality and be capable of activating it on request or if needed. The bridge team shall also ensure that the pilot onboard is advised of the system's existence and function.

(c) Man the wheelhouse of the vessel at all times by either the master or certified deck officer, and a helmsman, and;

(d) Have sufficient well rested crewmembers available for mooring operations and other essential duties.

[49 FR 30936, Aug. 2, 1984, as amended at 68 FR 36749, June 19, 2003; 70 FR 12972, Mar. 17, 2005; 90 FR 1883, Jan. 10, 2025; 91 FR 12691, Mar. 17, 2026]