Question 174Deck General70% to pass
Your vessel is underway and approaching an overhead obstruction on Lake Superior. Given the following information, determine the clearance between your vessel and the obstruction. Highest point on vessel: 74 ft. Lowest point of obstruction: 126 (LWD) Monthly lake level: +2 (LWD) International Great Lakes Datum: 600.0 (182.88 meters)
AI Explanation
The correct answer is D) 50 feet.
To calculate the clearance between the vessel and the overhead obstruction, we need to consider the following information:
- Highest point on vessel: 74 feet
- Lowest point of obstruction: 126 feet (LWD)
- Monthly lake level: +2 feet (LWD)
- International Great Lakes Datum: 600.0 feet (182.88 meters)
The clearance can be calculated by subtracting the highest point on the vessel (74 feet) from the lowest point of the obstruction (126 feet), and then adding the monthly lake level (+2 feet). This results in a clearance of 54 feet, which is closest to the answer choice of 50 feet.
The other answer choices are incorrect because they do not accurately reflect the clearance based on the given information.
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