Question 1

The Correct Answer is B **Explanation of Option B (Vessel constrained by her draft):** Option B, "Vessel constrained by her draft," is the correct answer because this term is **not** defined or used in the Inland Navigation Rules (33 CFR Part 83). This definition (and the associated special status and lights/shapes) is exclusively found in the International Regulations for Preventing Collisions at Sea (COLREGs, Rule 3(i) and Rule 28). **Explanation of Other Options (Why they are incorrect):** * **A) Seaplane:** This term is defined in the Inland Navigation Rules (Rule 3(n)): “The term 'seaplane' includes any aircraft designed to maneuver on the water.” * **C) Restricted visibility:** This term is defined in the Inland Navigation Rules (Rule 3(l)): “The term 'restricted visibility' means 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 (Rule 3(k)): “The term 'underway' means that a vessel is not at anchor, made fast to the shore, or aground.”