46 CFR § 45.58 - Correction: Short superstructure.

---
identifier: "/us/cfr/t46/s45.58"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "46 CFR § 45.58 - Correction: Short superstructure."
title_number: 46
title_name: "Shipping"
section_number: "45.58"
section_name: "Correction: Short superstructure."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "E"
subchapter_name: "LOAD LINES"
part_number: "45"
part_name: "GREAT LAKES LOAD LINES"
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. 5104, 5108; Department of Homeland Security Delegation No. 0170.1."
regulatory_source: "CGD 73-49R, 38 FR 12290, May 10, 1973, unless otherwise noted."
cfr_part: "45"
---


# 45.58 Correction: Short superstructure.

The minimum freeboard in summer for a type B vessel that is 79 ft. or more but less than 500 ft. in length and has enclosed superstructures with an effective length of 25 percent or less of the length of the vessel must be increased by—

0.03 (500—L) (0.25—E/L) inches

where:

(L) = length of vessel in feet;

(E) = effective length of superstructure in feet as defined in § 45.59.