33 CFR § 401.6 - Markings.

---
identifier: "/us/cfr/t33/s401.6"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "33 CFR § 401.6 - Markings."
title_number: 33
title_name: "Navigation and Navigable Waters"
section_number: "401.6"
section_name: "Markings."
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"
---


# 401.6 Markings.

(a) Vessels of more than 20.0 m in overall length shall be correctly and distinctly marked and equipped with draft markings on both sides at the bow and stern.

(b) In addition to the markings required by paragraph (a) of this section, vessels of more than 110 m in overall length shall be marked on both sides with midship draft markings.

(c) Where a vessel's bulbous bow extends forward beyond her stem head, a symbol of a bulbous bow shall be marked above the vessel's summer load line draught mark in addition to a + symbol followed by a number indicating the total length in meters by which the bulbous bow projects beyond the stem.

(68 Stat. 93-96, 33 U.S.C. 981-990, as amended and secs. 4, 5, 6, 7, 8, 12 and 13 of sec. 2 of Pub. L. 95-474, 92 Stat. 1471)

[47 FR 51121, Nov. 12, 1982, as amended at 61 FR 19551, May 2, 1996; 70 FR 12970, Mar. 17, 2005]