Question 1518Navigation General
70% to passIf a chart indicates the depth of water to be 6 fathoms and your draft is 6.0 feet, what is the depth of the water under your keel? (Assume the actual depth and charted depth to be the same)
A
6.0 feet
B
26.5 feet
C
30.0 feet
D
56.5 feet
AI Explanation
The correct answer is C) 30.0 feet. Explanation: 1. 1 fathom = 6 feet, so 6 fathoms = 36 feet. Since the chart indicates the depth is 6 fathoms, and your draft is 6.0 feet, the depth of the water under your keel is 36 feet - 6 feet = 30.0 feet. 2. This calculation is based on the standard conversion between fathoms and feet, and the understanding that the charted depth and the actual depth are the same. 3. The other options are incorrect because: A) 6.0 feet is the draft, not the depth of water under the keel. B) 26.5 feet is not the correct calculation. D) 56.5 feet is not the correct calculation.
Related Questions
Q1228:As the temperature of the air reaches the dew point, _______________.
Q1544:The parallel of latitude at 66°33'N is the _______________.
Q244:A white buoy with an orange rectangle on it is used to indicate _______________.
Q1466:Deneb is found in what constellation?
Q1792:The path that a vessel is expected to follow, represented on a chart by a line d...
Ready to test your knowledge?
Take a Navigation General Practice ExamOfficial Resources
Want to practice with timed exams?
Download Coast Guard Exams for the full exam experience.
App Store