33 CFR § 173.17 - Reciprocity.

---
identifier: "/us/cfr/t33/s173.17"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "33 CFR § 173.17 - Reciprocity."
title_number: 33
title_name: "Navigation and Navigable Waters"
section_number: "173.17"
section_name: "Reciprocity."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "S"
subchapter_name: "BOATING SAFETY"
part_number: "173"
part_name: "VESSEL NUMBERING AND CASUALTY AND ACCIDENT REPORTING"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "31 U.S.C. 9701; 46 U.S.C. 2110, 6101, 12301, 12302; OMB Circular A-25; DHS Delegation No. 00170.1, Revision No. 01.4."
regulatory_source: "CGD 72-54R, 37 FR 21399, Oct. 7, 1972, unless otherwise noted."
cfr_part: "173"
---


# 173.17 Reciprocity.

(a) Section 12302(c) of Title 46, United States Code, states:

When a vessel is numbered in a State, it is deemed in compliance with the numbering system of a State in which it temporarily is operated.

(b) Section 12302(d) of Title 46, United States Code, states:

When a vessel is removed to a new State of principal operation, the issuing authority of that State shall recognize the validity of the number issued by the original State for 60 days.

[CGD 89-048, 54 FR 27002, June 27, 1989]