33 CFR § 84.05 - Screens.

---
identifier: "/us/cfr/t33/s84.05"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "33 CFR § 84.05 - Screens."
title_number: 33
title_name: "Navigation and Navigable Waters"
section_number: "84.05"
section_name: "Screens."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "E"
subchapter_name: "INLAND NAVIGATION RULES"
part_number: "84"
part_name: "ANNEX I: POSITIONING AND TECHNICAL DETAILS OF LIGHTS AND SHAPES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "Sec. 303, Pub. L. 108-293, 118 Stat. 1042 (33 U.S.C. 2071); Department of Homeland Security Delegation No. 0170.1."
regulatory_source: "79 FR 37921, July 2, 2014, unless otherwise noted."
cfr_part: "84"
---


# 84.05 Screens.

(a) The sidelights of vessels of 20 meters or more in length shall be fitted with matt black inboard screens and meet the requirements of § 84.15. On vessels of less than 20 meters in length, the sidelights, if necessary to meet the requirements of § 84.15, shall be fitted with matt black inboard screens. With a combined lantern, using a single vertical filament and a very narrow division between the green and red sections, external screens need not be fitted.

(b) On power-driven vessels less than 12 meters in length constructed after July 31, 1983, the masthead light, or the all-round light described in Rule 23(d)(§ 83.23(d) of this chapter) shall be screened to prevent direct illumination of the vessel forward of the operator's position.