46 CFR § 4.03-30 - Investigating officer.

---
identifier: "/us/cfr/t46/s4.03-30"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "46 CFR § 4.03-30 - Investigating officer."
title_number: 46
title_name: "Shipping"
section_number: "4.03-30"
section_name: "Investigating officer."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "A"
subchapter_name: "PROCEDURES APPLICABLE TO THE PUBLIC"
part_number: "4"
part_name: "MARINE CASUALTIES AND INVESTIGATIONS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "14 U.S.C. 102; 43 U.S.C. 1333; 46 U.S.C. 2103, 2303A, 2306, 6101, 6301, 6305, 70034; 50 U.S.C. 198; DHS Delegation 00170.1, Revision No. 01.4. Subpart 4.40 issued under 49 U.S.C. 1131(a)(1)(E)."
regulatory_source: "CGD 74-119, 39 FR 33317, Sept. 17, 1974, unless otherwise noted."
cfr_part: "4"
---


# 4.03-30 Investigating officer.

An investigating officer is an officer or employee of the Coast Guard designated by the Commandant, District Commander or the Officer in Charge, Marine Inspection, for the purpose of making investigations of marine casualties and accidents or other matters pertaining to the conduct of seamen. An Officer in Charge, Marine Inspection, is an investigating officer without further designation.