On the Great Lakes, which defines the term...

Question 1 / 2707066636ee728f7522a1c517cd5

Question 1 of 2707066636ee728f7522a1c517cd5

On the Great Lakes, which defines the term "controlling depth"?

Question 1 of 27070

On the Great Lakes, which defines the term "controlling depth"?

🔍 Key Concepts

• Controlling depth as used on the Great Lakes and in channel design/maintenance • Difference between charted soundings, project (design) depth, and the shallowest spot that actually exists in the channel • How mariners determine whether their vessel can safely transit a dredged channel

💭 Think About

• Think about which definition focuses on the single shallowest point that practically limits how deep a ship can be to pass safely through the whole channel • Ask yourself: Which option describes a design or planned depth, and which describes an actual existing depth that could restrict navigation today? • Consider which options deal with dams, water levels, or chart datums, and which one directly addresses safe under-keel clearance along an entire route

✅ Before You Answer

• Identify which choice mentions the least/shallowest depth over the full length or width of the navigable channel • Separate project/design depth (what engineers intended) from controlling depth (what mariners must respect in practice) • Eliminate any options that do not directly describe a navigable channel depth that would constrain a vessel’s draft

Question 1 of 27070

On the Great Lakes, which defines the term "controlling depth"?

The designed dredging depth of a channel constructed by the Corps. of Engineers

The minimum amount of tail water available behind a dam

The distance in units of the chart (feet, meters or fathoms) from the reference datum to the bottom

The least depth within the limits of the channel which restricts the navigation

Question 1 / 2707066636ee728f7522a1c517cd5

Question 1 of 2707066636ee728f7522a1c517cd5

On the Great Lakes, which defines the term "controlling depth"?

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Question 1 of 27070

On the Great Lakes, which defines the term "controlling depth"?