---
kind: "section"
citation: "33 C.F.R. § 104.285"
title: "33"
number: "104.285"
heading: "Security measures for monitoring."
url: "https://uscodex.org/cfr/33/104.285"
---

# §104.285. Security measures for monitoring.

- (a) **General.**
  - (1) The vessel owner or operator must ensure the implementation of security measures and have the capability to continuously monitor, through a combination of lighting, watchkeepers, security guards, deck watches, waterborne patrols, automatic intrusion-detection devices, or surveillance equipment, as specified in their approved Vessel Security Plan (VSP), the—
    - (i) Vessel;
    - (ii) Restricted areas on board the vessel; and
    - (iii) **Area surrounding the vessel.**
  - (2) The following must be considered when establishing the appropriate level and location of lighting:
    - (i) Vessel personnel should be able to detect activities on and around the vessel, on both the shore side and the waterside;
    - (ii) Coverage should facilitate personnel identification at access points;
    - (iii) Coverage may be provided through coordination with the port or facility; and
    - (iv) **Lighting effects, such as glare, and its impact on safety, navigation, and other security activities.**
- (b) **Maritime Security (MARSEC) Level 1.** At MARSEC Level 1, the vessel owner or operator must ensure the implementation of security measures, which may be done in coordination with a facility, to:
  - (1) Monitor the vessel, particularly vessel access points and restricted areas;
  - (2) Be able to conduct emergency searches of the vessel;
  - (3) Ensure that equipment or system failures or malfunctions are identified and corrected;
  - (4) Ensure that any automatic intrusion detection device sets off an audible or visual alarm, or both, at a location that is continuously attended or monitored;
  - (5) Light deck and vessel access points during the period between sunset and sunrise and periods of limited visibility sufficiently to allow visual identification of persons seeking access to the vessel; and
  - (6) Use maximum available lighting while underway, during the period between sunset and sunrise, consistent with safety and international regulations.
- (c) **MARSEC Level 2.** In addition to the security measures required for MARSEC Level 1 in this section, at MARSEC Level 2, the vessel owner or operator must also ensure the implementation of additional security measures, as specified for MARSEC Level 2 in the approved VSP. These additional security measures may include:
  - (1) Increasing the frequency and detail of security patrols;
  - (2) Increasing the coverage and intensity of lighting, alone or in coordination with the facility;
  - (3) Using or increasing the use of security and surveillance equipment;
  - (4) Assigning additional personnel as security lookouts;
  - (5) Coordinating with boat patrols, when provided; and
  - (6) **Coordinating with shoreside foot or vehicle patrols, when provided.**
- (d) **MARSEC Level 3.** In addition to the security measures for MARSEC Level 1 and MARSEC Level 2, at MARSEC Level 3, the vessel owner or operator must ensure the implementation of additional security measures, as specified for MARSEC Level 3 in the approved VSP. These additional security measures may include:
  - (1) Cooperating with responders and facilities;
  - (2) Switching on all lights;
  - (3) Illuminating the vicinity of the vessel;
  - (4) Switching on all surveillance equipment capable of recording activities on, or in the vicinity of, the vessel;
  - (5) Maximizing the length of time such surveillance equipment can continue to record;
  - (6) Preparing for underwater inspection of the hull; and
  - (7) Initiating measures, including the slow revolution of the vessel's propellers, if practicable, to deter underwater access to the hull of the vessel.

## Notes

### Amendments

[USCG-2003-14749, 68 FR 39302, July 1, 2003, as amended at 68 FR 60514, Oct. 22, 2003]

### Authority

Authority: 46 U.S.C. 70051, 70116, Chapter 701; 33 CFR 1.05-1, 6.04-11, 6.14, 6.16, and 6.19; DHS Delegation No. 00170.1, Revision No. 01.3.

### Source

Source: USCG-2003-14749, 68 FR 39302, July 1, 2003, unless otherwise noted.

### Amendments

[USCG-2003-14749, 68 FR 39302, July 1, 2003, as amended at 68 FR 60514, Oct. 22, 2003]