The following questions are based on Chart 13205TR, Block Island Sound, and the supporting
publications.

Your draft is 12 feet (3.6 meters)
Your height of eye is 16 feet (4.8 meters)
Gyro error is 2°W
Variation is 15°W

"Per standard magnetic compass" is abbreviated "psc"
“Per gyrocompass” is abbreviated “pgc”

At 0520 you take the following observations:

Point Judith Light 036°pgc
Point Judith Harbor of Refuge Main Breakwater Center Light 312°pgc

What is the position of your 0520 fix?

Question

The following questions are based on Chart 13205TR, Block Island Sound, and the supporting
publications.

Your draft is 12 feet (3.6 meters)
Your height of eye is 16 feet (4.8 meters)
Gyro error is 2°W
Variation is 15°W

"Per standard magnetic compass" is abbreviated "psc"
“Per gyrocompass” is abbreviated “pgc”

At 0520 you take the following observations:

Point Judith Light 036°pgc
Point Judith Harbor of Refuge Main Breakwater Center Light 312°pgc

What is the position of your 0520 fix?

Accepted Answer

LAT 41°20.8'N, Long 71°29.7'W

Answer

LAT 41°20.5'N, Long 71°29.8'W

Answer

LAT 41°20.6'N, Long 71°30.0'W

Answer

LAT 41°20.8'N, Long 71°30.0'W

🔍 Key Concepts