46 CFR § 127.250 - Ventilation for enclosed spaces.

---
identifier: "/us/cfr/t46/s127.250"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "46 CFR § 127.250 - Ventilation for enclosed spaces."
title_number: 46
title_name: "Shipping"
section_number: "127.250"
section_name: "Ventilation for enclosed spaces."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "L"
subchapter_name: "OFFSHORE SUPPLY VESSELS"
part_number: "127"
part_name: "CONSTRUCTION AND ARRANGEMENTS"
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. 3306; sec. 617, Pub. L. 111-281, 124 Stat. 2905; Department of Homeland Security Delegation No. 0170.1."
regulatory_source: "CGD 82-004 and CGD 86-074, 62 FR 49328, Sept. 19, 1997, unless otherwise noted."
cfr_part: "127"
---


# 127.250 Ventilation for enclosed spaces.

(a) Each enclosed space within the vessel must be properly vented or ventilated. Means must be provided for closing each vent and ventilator.

(b) Means must be provided for stopping each fan in a ventilation system serving machinery and cargo spaces and for closing, in case of fire, each doorway, ventilator, and annular space around funnels and other openings into such spaces.