---
kind: "section"
citation: "33 C.F.R. § 101.645"
title: "33"
number: "101.645"
heading: "Communications."
url: "https://uscodex.org/cfr/33/101.645"
---

# §101.645. Communications.

- (a) The CySO must have a means to effectively notify owners or operators and personnel of a U.S.-flagged vessel, facility, or OCS facility of changes in cybersecurity conditions at the U.S.-flagged vessel, facility, and OCS facility and document these means in [Section 5](/cfr/33/5.md) of the Cybersecurity Plan.
- (b) Communication systems and procedures must allow effective and continuous communications between U.S.-flagged vessel, facility, and OCS facility security personnel, vessels interfacing with a facility or an OCS facility, the cognizant COTP, and national and local authorities with security responsibilities.

## Notes

### Source

Source: 90 FR 6447, Jan. 17, 2025, unless otherwise noted.

### Authority

Authority: 46 U.S.C. 70101-70104 and 70124; Executive Order 12656, 3 CFR, 1988 Comp., p. 585; 33 CFR 1.05-1, 6.04-11, 6.14, 6.16, and 6.19; Department of Homeland Security Delegation No. 00170.1, Revision No. 01.4.

### Source

Source: USCG-2003-14792, 68 FR 39278, July 1, 2003, unless otherwise noted.