---
kind: "section"
citation: "33 C.F.R. § 155.785"
title: "33"
number: "155.785"
heading: "Communications."
url: "https://uscodex.org/cfr/33/155.785"
---

# §155.785. Communications.

- (a) During vessel to vessel transfers, each tank vessel with a capacity of 250 or more barrels of cargo that is carrying oil or hazardous material must have a means that enables continuous two-way voice communication between the persons in charge of the transfer operations on both vessels.
- (b) Each vessel must have a means, which may be the communication system itself, that enables a person on board each vessel to effectively indicate his desire to use the means of communication required by [paragraph (a)](#a) of this section.
- (c) The means required by [paragraph (a)](#a) of this section must be usable and effective in all phases of the transfer operation and all conditions of weather.
- (d) Portable radio devices used to comply with [paragraph (a)](#a) of this section during the transfer of flammable or combustible liquids must be intrinsically safe, as defined in [46 CFR 110.15-100(i)](/cfr/46/110.15-100.md?p=i), and meet Class I, Division I, Group D requirements as defined in [46 CFR 111.80](/cfr/46/111.80.md).

## Notes

### Amendments

[CGD 75-124, 45 FR 7175, Jan. 31, 1980; 45 FR 43705, June 30, 1980, as amended by CGD 86-034, 55 FR 36255, Sept. 4, 1990]

### Authority

Authority: 3 U.S.C. 301 through 303; 33 U.S.C. 1321(j), 1903(b), 2735; 46 U.S.C. 70011; 70034; E.O. 12777, 56 FR 54757, 3 CFR, 1991 Comp., p. 351; DHS Delegation No. 00170.1, Revision No. 01.4. Section 155.1020 also issued under section 316 of Pub. L. 114-120. Section 155.480 also issued under section 4110(b) of Pub. L. 101-380.

### Amendments

[CGD 75-124, 45 FR 7175, Jan. 31, 1980; 45 FR 43705, June 30, 1980, as amended by CGD 86-034, 55 FR 36255, Sept. 4, 1990]