# 33 CFR § 101.300: Preparedness communications

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-33-101.300

## Section

- **Citation:** 33 CFR § 101.300
- **Heading:** Preparedness communications
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** September 22, 2026
- **Source:** Publisher's official text
- **Location:** Title 33—Navigation and Navigable Waters > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER H—MARITIME SECURITY > PART 101—MARITIME SECURITY: GENERAL > Subpart C—Communication (Port—Facility—Vessel)

## Text

(a) Notification of MARSEC Level change. The COTP will communicate any changes in the MARSEC Levels through a local Broadcast Notice to Mariners, an electronic means, if available, or as detailed in the AMS Plan.
(b) Communication of threats. When the COTP is made aware of a threat that may cause a transportation security incident, the COTP will, when appropriate, communicate to the port stakeholders, vessels, and facilities in his or her AOR the following details:
(1) Geographic area potentially impacted by the probable threat;
(2) Any appropriate information identifying potential targets;
(3) Onset and expected duration of probable threat;
(4) Type of probable threat; and
(5) Required actions to minimize risk.
(c) Attainment. (1) Each owner or operator of a vessel or facility required to have a security plan under parts 104 or 105 of this subchapter affected by a change in the MARSEC Level must ensure confirmation to their local COTP the attainment of measures or actions described in their security plan and any other requirements imposed by the COTP that correspond with the MARSEC Level being imposed by the change.
(2) Each owner or operator of a facility required to have a security plan under part 106 of this subchapter affected by a change in the MARSEC Level must ensure confirmation to their cognizant District Commander the attainment of measures or actions described in their security plan and any other requirements imposed by the District Commander or COTP that correspond with the MARSEC Level being imposed by the change.
[USCG-2003-14792, 68 FR 39278, July 1, 2003, as amended at 68 FR 60472, Oct. 22, 2003]

## Nearby sections

- [33 CFR § 101.100 § 101.100 Purpose.](https://www.frixlaw.com/law-library/statutes/ecfr-33-101.100.md)
- [33 CFR § 101.105 § 101.105 Definitions.](https://www.frixlaw.com/law-library/statutes/ecfr-33-101.105.md)
- [33 CFR § 101.110 § 101.110 Applicability.](https://www.frixlaw.com/law-library/statutes/ecfr-33-101.110.md)
- [33 CFR § 101.112 § 101.112 Federalism.](https://www.frixlaw.com/law-library/statutes/ecfr-33-101.112.md)
- [33 CFR § 101.115 § 101.115 Incorporation by reference.](https://www.frixlaw.com/law-library/statutes/ecfr-33-101.115.md)
- [33 CFR § 101.120 § 101.120 Alternatives.](https://www.frixlaw.com/law-library/statutes/ecfr-33-101.120.md)
- [33 CFR § 101.130 § 101.130 Equivalent security measures.](https://www.frixlaw.com/law-library/statutes/ecfr-33-101.130.md)
- [33 CFR § 101.200 § 101.200 MARSEC Levels.](https://www.frixlaw.com/law-library/statutes/ecfr-33-101.200.md)
- [33 CFR § 101.300 § 101.300 Preparedness communications.](https://www.frixlaw.com/law-library/statutes/ecfr-33-101.300.md)
- [33 CFR § 101.305 § 101.305 Reporting.](https://www.frixlaw.com/law-library/statutes/ecfr-33-101.305.md)
- [33 CFR § 101.310 § 101.310 Additional communication devices.](https://www.frixlaw.com/law-library/statutes/ecfr-33-101.310.md)
- [33 CFR § 101.400 § 101.400 Enforcement.](https://www.frixlaw.com/law-library/statutes/ecfr-33-101.400.md)
- [33 CFR § 101.405 § 101.405 Maritime Security (MARSEC) Directives.](https://www.frixlaw.com/law-library/statutes/ecfr-33-101.405.md)
- [33 CFR § 101.410 § 101.410 Control and Compliance Measures.](https://www.frixlaw.com/law-library/statutes/ecfr-33-101.410.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-33-101.300. Check the current official text before relying on it. Not legal advice.