33 CFR § 401.38 - Limit of approach to a lock.
---
identifier: "/us/cfr/t33/s401.38"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "33 CFR § 401.38 - Limit of approach to a lock."
title_number: 33
title_name: "Navigation and Navigable Waters"
section_number: "401.38"
section_name: "Limit of approach to a lock."
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: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
cfr_part: "401"
---
# 401.38 Limit of approach to a lock.
A vessel approaching a lock shall comply with directions indicated by the signal light system associated with the lock and in no case shall its stem pass the designated limit of approach sign while a red light or no light is displayed.
[74 FR 18995, Apr. 27, 2009]