46 CFR § 119.435 - Integral fuel tanks.

---
identifier: "/us/cfr/t46/s119.435"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "46 CFR § 119.435 - Integral fuel tanks."
title_number: 46
title_name: "Shipping"
section_number: "119.435"
section_name: "Integral fuel tanks."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "K"
subchapter_name: "SMALL PASSENGER VESSELS CARRYING MORE THAN 150 PASSENGERS OR WITH OVERNIGHT ACCOMMODATIONS FOR MORE THAN 49 PASSENGERS"
part_number: "119"
part_name: "MACHINERY INSTALLATION"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "46 U.S.C. 2103, 3306; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; DHS Delegation No. 00170.1, Revision No. 01.3."
regulatory_source: "CGD 85-080, 61 FR 922, Jan. 10, 1996, unless otherwise noted."
cfr_part: "119"
---


# 119.435 Integral fuel tanks.

(a) Diesel fuel tanks may not be built integral with the hull of a vessel unless the hull is made of steel or aluminum.

(b) During the initial inspection for certification of a vessel, integral fuel tanks must withstand a hydrostatic pressure test of 35 kPa (5 psig), or the maximum pressure head to which they may be subjected in service, whichever is greater. A standpipe of 3.5 meters (11.5 feet) in height attached to the tank may be filled with water to accomplish the 35 kPa (5 psig) test.