🔍 Key Concepts

• Definition of advance in a turning circle test (distance made good in the original course direction from rudder order until a given change of heading)** • Using successive radar ranges and bearings from a fixed light to plot your own ship’s positions on a maneuvering diagram • Interpolating between two plotted points when the exact heading change (here, 60°) is between the recorded headings

💭 Think About

• From the table, identify the line where the rudder is put hard over; that is your starting point for measuring advance • Find the two recorded positions that bracket a 60° change of heading from the original course, then think about how to estimate the ship’s position at exactly 60° of turn between them • Once that 60° position is found on your plot, how do you project onto the original course line to read the advance distance?

✅ Before You Answer

• Be clear about the initial true heading and which way (left or right) the vessel is turning • Confirm on your plot that the light is treated as a fixed reference point, and all your own-ship positions are relative to it • When you read the advance, make sure it is measured along the original course line and converted into yards to compare with the answer choices