---
kind: "section"
citation: "46 C.F.R. § 148.450"
title: "46"
number: "148.450"
heading: "Cargoes subject to liquefaction."
url: "https://uscodex.org/cfr/46/148.450"
---

# §148.450. Cargoes subject to liquefaction.

- (a) This section applies only to cargoes identified in Table 148.10 of this part with a reference to this section and cargoes identified in the IMSBC Code (incorporated by reference, see [§ 148.8](/cfr/46/148.8.md)) as cargoes that may liquefy.
- (b) **This section does not apply to—**
  - (1) Shipments by unmanned barge; or
  - (2) Cargoes of coal that have an average particle size of 10mm (.394 in.) or greater.
- (c) **Definitions as used in this section—**
  - (1) Cargo subject to liquefaction means a material that is subject to moisture migration and subsequent liquefaction if shipped with moisture content in excess of the transportable moisture limit.
  - (2) **Moisture migration—** is the movement of moisture by settling and consolidation of a material, which may result in the development of a flow state in the material.
  - (3) **Transportable moisture limit—** or TML of a cargo that may liquefy is the maximum moisture content that is considered safe for carriage on vessels.
- (d) Except on a vessel that is specially constructed or specially fitted for the purpose of carrying such cargoes (see also section 7 of the IMSBC Code, incorporated by reference, see [§ 148.8](/cfr/46/148.8.md)), a cargo subject to liquefaction may not be transported by vessel if its moisture content exceeds its TML.
- (e) The shipper of a cargo subject to liquefaction must give the master the material's moisture content and TML.
- (f) The master of a vessel shipping a cargo subject to liquefaction must ensure that—
  - (1) A cargo containing a liquid is not stowed in the same cargo space with a cargo subject to liquefaction; and
  - (2) Precautions are taken to prevent the entry of liquids into a cargo space containing a cargo subject to liquefaction.
- (g) The moisture content and TML of a material may be determined by the tests described in Appendix 2, [Section 1](/cfr/46/1.md), of the IMSBC Code (incorporated by reference, see [§ 148.8](/cfr/46/148.8.md)).

## Notes

### Authority

Authority: 33 U.S.C. 1602; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; 46 U.S.C. 3306, 5111; 49 U.S.C. 5103; Department of Homeland Security Delegation No. 0170.1.

### Source

Source: 75 FR 64591, Oct. 19, 2010, unless otherwise noted.