33 CFR § 89.9 - Certificate of Alternative Compliance: Contents.

---
identifier: "/us/cfr/t33/s89.9"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "33 CFR § 89.9 - Certificate of Alternative Compliance: Contents."
title_number: 33
title_name: "Navigation and Navigable Waters"
section_number: "89.9"
section_name: "Certificate of Alternative Compliance: Contents."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "E"
subchapter_name: "INLAND NAVIGATION RULES"
part_number: "89"
part_name: "INLAND NAVIGATION RULES: IMPLEMENTING RULES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "33 U.S.C. 2071; 49 CFR 1.46(n)(14)."
regulatory_source: "CGD 80-157, 47 FR 13801, Apr. 1, 1982, unless otherwise noted."
cfr_part: "89"
---


# 89.9 Certificate of Alternative Compliance: Contents.

The Chief of the Prevention Division issues the Certificate of Alternative Compliance to the vessel based on a determination that it cannot comply fully with Inland Rules light, shape, and sound signal provisions without interference with its special function. This Certificate includes:

(a) Identification of the vessel as supplied in the application under § 89.5(a)(2);

(b) The provision of the Inland Rules for which the Certificate authorizes alternative compliance;

(c) A certification that the vessel is unable to comply fully with the Inland Rules light, shape, and sound signal requirements without interference with its special function;

(d) A statement of why full compliance would interfere with the special function of the vessel;

(e) The required alternative installation;

(f) A statement that the required alternative installation is in the closest possible compliance with the Inland Rules without interfering with the special function of the vessel;

(g) The date of issuance;

(h) A statement that the Certificate of Alternative Compliance terminates when the vessel ceases to be usually engaged in the operation for which the certificate is issued.

[CGD 80-157, 47 FR 13801, Apr. 1, 1982, as amended by USCG-2018-0874, 84 FR 30878, June 28, 2019]