🔍 Key Concepts

• True vs. magnetic vs. relative bearings when reporting environmental conditions • Standard convention for weather and wind reports at sea • What the term isobaric actually refers to in meteorology

💭 Think About

• When you hear or read a marine weather forecast, from what reference is the wind direction normally given? • If you’re reporting wind direction to another vessel or a Coast Guard station, do they need a ship-specific reference or a universal reference? Why? • Which of these options is NOT a standard way to express direction at all, and which is used mainly for your maneuvering and collision-avoidance on that specific vessel?

✅ Before You Answer

• Make sure you know the difference between relative, magnetic, and true directions • Ask yourself: which reference would be the same for all ships in the area, regardless of heading or compass error? • Eliminate any choice that describes something not normally used to express direction in navigation reports