Question 22 RVR01 - Master of Unlimited Tonnage

The Correct Answer is C 1. **Explanation for Option C (Correct Answer):** The Inland Rules of the Road define the "Great Lakes" in 33 CFR § 89.03 (Applicability of the Inland Rules on the Great Lakes) by specifying the boundaries. The definition explicitly includes "Lake Erie, Lake Huron, Lake Michigan, Lake Ontario, Lake Superior, **and their connecting and tributary waters.**" However, the definition **excludes** waters specifically designated as high seas for the purpose of the International Regulations for Preventing Collisions at Sea (COLREGS). The portion of the St. Lawrence River extending eastward toward Trois-Rivières is generally considered beyond the scope of the Great Lakes system as defined by the Inland Rules, particularly once it passes the area regulated as part of the system (generally east of Montreal/St. Regis), and certainly does not fall within the specific geographic boundaries of the Great Lakes defined under 33 CFR Subchapter E for purposes of collision regulations. The primary navigable boundary of the Inland Rules jurisdiction for the Great Lakes system terminates upstream of the full reach of the St. Lawrence River to Trois-Rivières. 2. **Explanation of Incorrect Options:** * **A) Portions of the Calumet River:** This is incorrect because the Calumet River is a major connecting and tributary water body to Lake Michigan (one of the defined Great Lakes) and is thus included within the scope of the Inland Rules' definition of the "Great Lakes" system. * **B) Saginaw Bay, Michigan:** This is incorrect because Saginaw Bay is an integral part of Lake Huron (one of the defined Great Lakes) and is specifically included under the designation of "tributary waters" or waters within the lake boundaries. * **D) Portions of the Chicago River:** This is incorrect because the Chicago River system connects directly to Lake Michigan and is categorized as one of the "connecting and tributary waters" that fall under the Inland Rules' definition of the Great Lakes.