Which term is not found in the Inland Navigation Rules?

The term "vessel constrained by her draft" is not found in the Inland Navigation Rules. In the context of these rules, the terms used are specifically defined to address different types of vessels and their limitations. While "vessel under oars," "vessel aground," and "vessel restricted in her ability to maneuver" are all recognized categories within the rules, "vessel constrained by her draft" is not included.

This distinction is important because each term plays a role in determining the navigational rights and responsibilities of vessels on the water. A vessel aground, for instance, has specific considerations regarding its status, while a vessel restricted in its ability to maneuver has certain privileges under the rules when navigating around other vessels. Understanding these distinctions enables mariners to operate safely and according to regulations, especially in congested waterways or challenging navigational situations.