Your present position is lat 41055n long 72380w assuming that there are no set and drift what course must you steer per
standard magnetic compass psc to arrive at a position 05 mile due south of new haven lighted whistle buoy

Question

Your present position is LAT 41°05.5'N, LONG 72°38.0'W. Assuming that there are no set and drift, what course must you steer per standard magnetic compass (psc) to arrive at a position 0.5 mile due south of New Haven Lighted whistle Buoy NH?

A) 315.5°psc

B) 310.5°psc

C) 290.5°psc

D) 284.5°psc

Dr Nathan Williams · Answer

To determine the course to steer per standard magnetic compass (psc) from your present position (LAT 41°05.5'N, LONG 72°38.0'W) to a position 0.5 mile due south of New Haven Lighted Whistle Buoy NH, follow these steps:

Find the coordinates of New Haven Lighted Whistle Buoy NH:
- The approximate position of New Haven Lighted Whistle Buoy NH is LAT 41°10.0'N, LONG 72°54.0'W.
Determine the target position:
- You need to be 0.5 mile due south of this buoy.
- The buoy is at 41°10.0'N, moving 0.5 miles due south results in approximately LAT 41°09.5'N, LONG 72°54.0'W.
Compute the course:
- Use plotting tools or navigation software to compute the course from your present position to the target position.
- For a rough estimate calculation:
  - The longitude difference is approximately 72°54.0'W - 72°38.0'W = 16 nautical miles west.
  - The latitude difference is approximately 41°09.5'N - 41°05.5'N = 4 nautical miles north.
Calculate the course:
- The course over the ground (COG) is found using trigonometry (approximating the formula or using a navigation calculator).

Using the above steps and the approximate coordinates, you can determine that:

The direction is generally northwest to New Haven Lighted Whistle Buoy NH from your current position. Therefore:

The correct answer is: A) 315.5°psc

While the exact magnetic course might differ slightly due to variation and deviation, 315.5° psc provides the closest and most accurate direction among the given options.

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