# Federal Register 2026-18855 — effective 2026-09-15 — Safety Zone; Rocket Test Site, Rio Grande River, Boca Chica, TX — Coast Guard

For Federal Register 2026-18855, effective date is 2026-09-15; agency is Coast Guard; published is 2026-09-15; cfr parts amended is 33 CFR 165, recorded from its source on 2026-09-15; source re-checked 2026-09-16.

- **FR document number:** 2026-18855 _(verified: appears in the quote below)_
- **Rule:** Safety Zone; Rocket Test Site, Rio Grande River, Boca Chica, TX _(verified: appears in the quote below)_
- **Agency:** Coast Guard _(verified: appears in the quote below)_
- **Effective date:** 2026-09-15 _(verified: appears in the quote below)_
- **DATES, as printed:** This rule is effective without actual notice from September 15, 2026 through October 31, 2026. For the purposes of enforcement, actual notice will be used from September 4, 2026, until September 15, 2026. _(verified: appears in the quote below)_
- **CFR parts amended:** 33 CFR 165 _(our reading, not quoted from the source)_
- **Published:** 2026-09-15 _(verified: appears in the quote below)_

## What the source says

> {"document_number":"2026-18855","title":"Safety Zone; Rocket Test Site, Rio Grande River, Boca Chica, TX","agency_names":["Homeland Security Department","Coast Guard"],"effective_on":"2026-09-15","dates":"This rule is effective without actual notice from September 15, 2026 through October 31, 2026. For the purposes of enforcement, actual notice will be used from September 4, 2026, until September 15, 2026.","cfr_references":[{"chapter":null,"citation_url":null,"part":"165","title":33}],"publication_date":"2026-09-15","html_url":"https://www.federalregister.gov/documents/2026/09/15/2026-18855/safety-zone-rocket-test-site-rio-grande-river-boca-chica-tx"}

## Source

- https://www.federalregister.gov/api/v1/documents.json?per_page=1000&order=oldest&conditions%5Btype%5D%5B%5D=RULE&conditions%5Beffective_date%5D%5Bgte%5D=2026-08-31&conditions%5Beffective_date%5D%5Blte%5D=2026-12-31&fields%5B%5D=document_number&fields%5B%5D=title&fields%5B%5D=agency_names&fields%5B%5D=effective_on&fields%5B%5D=dates&fields%5B%5D=cfr_references&fields%5B%5D=publication_date&fields%5B%5D=html_url

Last verified: 2026-09-16. Review by: 2026-09-29.
Part of [Federal rules taking effect: every US final rule in the Federal Register, by effective date](https://referencesource.org/federal-rules-taking-effect/).