---
kind: "section"
citation: "33 C.F.R. § 161.18"
title: "33"
number: "161.18"
heading: "Reporting requirements."
url: "https://uscodex.org/cfr/33/161.18"
---

# §161.18. Reporting requirements.

- (a) **A Center may—**
  - (1) Direct a vessel to provide any of the information set forth in Table 161.18(a) (IMO Standard Ship Reporting System);
  - (2) Establish other means of reporting for those vessels unable to report on the designated frequency; or
  - (3) **Require reports from a vessel in sufficient time to allow advance vessel traffic planning.**
- (b) All reports required by this part shall be made as soon as is practicable on the frequency designated in Table 161.12(c) (VTS and VMRS Centers, Call Signs/MMSI, Designated Frequencies, and Monitoring Areas).
- (c) When not exchanging communications, a VMRS User must maintain a listening watch as described in [§ 26.04(e)](/cfr/33/26.04.md?p=e) of this chapter on the frequency designated in Table 161.12(c) (VTS and VMRS Centers, Call Signs/MMSI, Designated Frequencies, and Monitoring Areas). In addition, the VMRS User must respond promptly when hailed and communicate in the English language.
- (d) A vessel must report:
  - (1) Any significant deviation from its Sailing Plan, as defined in [§ 161.19](/cfr/33/161.19.md), or from previously reported information; or
  - (2) **Any intention to deviate from a VTS issued measure or vessel traffic routing system.**
- (e) When reports required by this part include time information, such information shall be given using the local time zone in effect and the 24-hour military clock system.

## Notes

### Amendments

[CGD 90-020, 59 FR 36324, July 15, 1994, as amended by USCG-2003-14757, 68 FR 39366, July 1, 2003; USCG-2015-0433, 80 FR 44282, July 27, 2015]

### Authority

Authority: 46 U.S.C. 70001, 70002, 70003, 70034, 70114, 70119; Pub. L. 107-295, 116 Stat. 2064; DHS Delegation No. 00170.1, Revision No. 01.3.

### Source

Source: CGD 90-020, 59 FR 36324, July 15, 1994, unless otherwise noted.

### Amendments

[CGD 90-020, 59 FR 36324, July 15, 1994, as amended by USCG-2003-14757, 68 FR 39366, July 1, 2003; USCG-2015-0433, 80 FR 44282, July 27, 2015]