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Regulations last checked for updates: Dec 18, 2025
Title 46 - Shipping last revised: Nov 24, 2025
All Titles
Title 46
Chapter I
Part 4
Subpart 4.03 - Subpart 4.03—Definitions
§ 4.03-1 - Marine casualty or accident.
§ 4.03-2 - Serious marine incident.
§ 4.03-4 - Individual directly involved in a serious marine incident.
§ 4.03-5 - Medical facility.
§ 4.03-6 - Qualified medical personnel.
§ 4.03-7 - Chemical test.
§ 4.03-10 - Party in interest.
§ 4.03-15 - Commandant.
§ 4.03-20 - Coast Guard district.
§ 4.03-25 - District Commander.
§ 4.03-30 - Investigating officer.
§ 4.03-35 - Nuclear vessel.
§ 4.03-40 - Public vessels.
§ 4.03-45 - Marine employer.
§ 4.03-50 - Recreational vessel.
§ 4.03-55 - Law enforcement officer.
§ 4.03-60 - Noxious liquid substance (NLS).
§ 4.03-65 - Significant harm to the environment.
§ 4.03-70 - Tank vessel.
§ 4.03-75 - Merchant mariner credential and credential.
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)
source:
CGD 74-119, 39 FR 33317, Sept. 17, 1974, unless otherwise noted.
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