33 CFR § 83.31 - Seaplanes (Rule 31).

---
identifier: "/us/cfr/t33/s83.31"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "33 CFR § 83.31 - Seaplanes (Rule 31)."
title_number: 33
title_name: "Navigation and Navigable Waters"
section_number: "83.31"
section_name: "Seaplanes (Rule 31)."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "E"
subchapter_name: "INLAND NAVIGATION RULES"
part_number: "83"
part_name: "NAVIGATION RULES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "33 U.S.C. 2071; DHS Delegation No. 00170.1, Revision No. 01.3."
regulatory_source: "USCG-2012-0102, 79 FR 37912, July 2, 2014, unless otherwise noted."
cfr_part: "83"
---


# 83.31 Seaplanes (Rule 31).

Where it is impracticable for a seaplane or a WIG craft to exhibit lights and shapes of the characteristics or in the positions prescribed in the Rules of this subpart, she shall exhibit lights and shapes as closely similar in characteristics and position as is possible.