Question 1 ONC06 - Master LT 100 GRT

The Correct Answer is B **Explanation for Option B (Vessel constrained by her draft):** The term "vessel constrained by her draft" is explicitly defined in Rule 3(k) of the **International** Navigation Rules (COLREGs), but it is **not** defined or used in the statutory definitions (Rule 3) of the **Inland** Navigation Rules. Inland Rule 3 uses definitions that are tailored to the specific context of U.S. inland waters and generally omits terms that are only relevant to large, deep-draft international traffic, such as vessels constrained by draft. **Explanation for Incorrect Options:** * **A) Seaplane:** This term is defined in both the International Rules (Rule 3(l)) and the Inland Rules (Rule 3(l)) as "any aircraft designed to maneuver on the water." * **C) Restricted visibility:** This term is defined in both the International Rules (Rule 3(m)) and the Inland Rules (Rule 3(m)) as "any condition in which visibility is restricted by fog, mist, falling snow, heavy rainstorms, sandstorms, or any other similar causes." * **D) Underway:** This essential operational term is defined in both the International Rules (Rule 3(i)) and the Inland Rules (Rule 3(i)) as a vessel "not at anchor, nor made fast to the shore, nor aground."