Question 1 GLI03 - Master-LT 500-1600 GRT

The Correct Answer is B **Explanation for Option B (Correct Answer):** The term "vessel constrained by her draft" is a definition found exclusively in the **International Rules (COLREGs), Annex I, Rule 3(l)**. This term is explicitly and intentionally **omitted** from the Inland Navigation Rules (33 CFR Subchapter E). The reason for this omission is that U.S. inland waters are generally considered too shallow or restricted for vessels to frequently operate in a manner truly "constrained by draft" as defined internationally. Therefore, Inland Rule 3 (Definitions) does not define or use this term. **Explanation for Other Options (Incorrect Answers):** * **A) Seaplane:** This term **is** defined in the Inland Navigation Rules. Inland Rule 3(j) defines "Seaplane" as "any aircraft designed to maneuver on the water." * **C) Restricted visibility:** This term **is** defined in the Inland Navigation Rules. Inland Rule 3(k) defines "Restricted visibility" as "any condition in which visibility is restricted by fog, mist, falling snow, heavy rainstorms, sandstorms, or any other similar causes." * **D) Underway:** This term **is** defined in the Inland Navigation Rules. Inland Rule 3(i) defines "Underway" as meaning that a vessel is "not at anchor, or made fast to the shore, or aground."