# COMAR Title 08 — Department of Natural Resources

## Subtitle 18 — Boating — Speed Limits and Operation of Vessels

### Chapter 04 — Safety Equipment

#### Regulation .01 Definitions.

*COMAR 08.18.04.01*

A. In this chapter, the following terms have the meanings indicated.

B. Terms Defined.

  (1) “Aground” means a vessel that is touching the bottom and unable to move.

  (2) “Underway” means a vessel that is not aground, at anchor, or tied to shore.

  (3) “Upper Potomac River” means that portion of the Potomac River and its tributaries above the Maryland/District of Columbia boundary near Little Falls.