46 CFR § 69.183 - Figures.

---
identifier: "/us/cfr/t46/s69.183"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "46 CFR § 69.183 - Figures."
title_number: 46
title_name: "Shipping"
section_number: "69.183"
section_name: "Figures."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "G"
subchapter_name: "DOCUMENTATION AND MEASUREMENT OF VESSELS"
part_number: "69"
part_name: "MEASUREMENT OF VESSELS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "46 U.S.C. 2301, 14103, 14104; Department of Homeland Security Delegation No. 0170.1."
regulatory_source: "CGD 87-015b, 54 FR 37657, Sept. 12, 1989, unless otherwise noted."
cfr_part: "69"
---


# 69.183 Figures.

(a) *Tonnage mark with an equilateral triangle and a line for fresh and tropical waters.*

W=
1/48 of the distance from the top of the flat keel to the tonnage mark. (See § 69.177(b)(2).)

(b) *Tonnage mark location if the load line mark is not placed as though the second deck were the freeboard deck.*

k = a distance between 21 inches and six feet six inches.

a = distance derived from Table 69.177(a)(5).

(c)—*Tonnage mark location if the load line mark is placed as though the second deck were the freeboard deck.*

k = a distance between 21 inches and six feet six inches.

a = the distance between the line of the second deck and the uppermost part of the load line grid.

[CGD 87-015b, 54 FR 37657, Sept. 12, 1989, as amended by USCG-2011-0522, 81 FR 18732, Mar. 31, 2016]