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Answers to Relative Bearings Practice Lesson

Chris Riley by Chris Riley Updated on August 14, 2019. In navigation

Coastal Navigation Course
Chapter IX

Answers to Relative Bearings Practice Lesson

1. Brenton Reef light bears 225° T. Your current course is 059° T. The relative bearing of Brenton Reef light is 166°.
True Bearing – Ship’s Heading = Relative Bearing – 225 – 059 = 166
2. Cleveland Ledge Channel light bears 325° relative. Your course is 135° T. The true bearing to the Cleveland Ledge Channel light is 100°.
Relative Bearing + Ships Heading = True Bearing – 325 + 135 = 100
(Remember when adding, if your total is over 360° you must subtract 360°).
3. Rudee Inlet light bears 035° relative. Your course is 156° T. The true bearing to the Rudee Inlet light is 191°.
Relative Bearing + Ships Heading = True Bearing – 035 + 156 = 191
4. Moose head shoal light bears 224° T. Your course is 270° T. The relative bearing to the Moose head shoal light is 314°.
True Bearing – Ship’s Heading = Relative Bearing – 224 – 270 = 314
(Remember when relative is less than ship’s heading add 360° to answer).
5. Hell’s Gate point light bears 270° relative. Your course is 180° T. The true bearing to Hell’s Gate point light is 090°.
Relative Bearing + Ships Heading = True Bearing -270 + 180 = 090
6. The light at Keenan Point bears 066° T. Your course is 134° T. The relative bearing to Keenan Point light is 292°.
True Bearing – Ship’s Heading = Relative Bearing – 066 – 134 = 292
7. Bull Shoals light bears 119° T. Your course is 235° T. The relative bearing to the light is 244°.
True Bearing – Ship’s Heading = Relative Bearing – 119 – 235 = 244
8. The lighthouse at Judith point bears 340° relative. Your course is 080° T. The true bearing to the point Judith lighthouse is 060°.
Relative Bearing + Ships Heading = True Bearing -340 + 080 = 060
9. The buoy marked R4 Fl 4 sec bears 115° T. Your course is 220° T. The relative bearing of the buoy is 255°.
True Bearing – Ship’s Heading = Relative Bearing – 115 – 220 = 255
10. Muscle shoals danger buoy bears 145° relative. Your course is 190° T. The true bearing to the danger buoy is 335°.
Relative Bearing + Ships Heading = True Bearing -145 + 190 = 335

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