50 CFR § 218.151 - Effective dates and definitions.

---
identifier: "/us/cfr/t50/s218.151"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "50 CFR § 218.151 - Effective dates and definitions."
title_number: 50
title_name: "Wildlife and Fisheries"
section_number: "218.151"
section_name: "Effective dates and definitions."
chapter_name: "NATIONAL MARINE FISHERIES SERVICE, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE"
subchapter_number: "C"
subchapter_name: "MARINE MAMMALS"
part_number: "218"
part_name: "REGULATIONS GOVERNING THE TAKING AND IMPORTING OF MARINE MAMMALS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "16 U.S.C. 1361"
regulatory_source: "74 FR 28343, June 15, 2009, unless otherwise noted."
cfr_part: "218"
---


# 218.151 Effective dates and definitions.

(a) Regulations in this subpart are effective February 3, 2023 through February 2, 2030.

(b) In additions to the definitions contained in section 2 of the Marine Mammal Protection Act (MMPA), 16 U.S.C. 1362, and § 218.103, the following definitions apply to this subpart:

(1) *GOA Study Area* means the area described in § 218.150(b).

(2) *TMAA* means Temporary Maritime Activities Area, as described in § 218.150(b).

(3) *WMA* means Western Maneuver Area, as described in § 218.150(b).

(4) *LOA* means a Letter of Authorization issued under §§ 216.106 of this chapter and 218.156.

(5) *MTE* means major training exercise.

(6) *Navy* means United States Department of the Navy.

(7) *Navy personnel* means active-duty and reserve uniformed Navy personnel and Navy civil servants.

(8) *Navy contractor* means any individual, firm, corporation, partnership, association, or other legal non-Federal entity that enters into a contract directly with the Navy to furnish services, supplies, or construction and is performing or acting in furtherance of those duties.

(9) *Lookout* means an individual designated the responsibility of visually observing mitigation zones.

(10) *Training activities* means military readiness activities described in § 218.150.