---
kind: "unit"
title: "33"
title_heading: "Navigation and Navigable Waters"
key: "ch3/schI"
level: "subchapter"
label: "Subchapter I"
heading: "Preliminary"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/33/ch3-schI"
sections_count: 5
---

# Subchapter I — Preliminary

Title 33 — Navigation and Navigable Waters › Chapter 3 — Navigation Rules for Harbors, Rivers, and Inland Waters Generally

## Sections

- [§151. High seas and inland waters demarcation lines](/usc/33/151.md)
- [§152. Regulation of length of towlines](/usc/33/152.md)
- [§153. Penalty for use of unlawful towline](/usc/33/153.md)
- [§154. Repealed.](/usc/33/154.md)
- [§155...159. Repealed.](/usc/33/155...159.md)