Position and speed and direction given?
Mark the spot, draw a course line, check the time you received the contact report. Is it an hour or more since you got the message, the convoy has moved.
Take tour own boat and speed and course, mark it. Calculate at which time the convoy is where.
Calculate an intercept course for your ship.
Example. Convoy X, speed 5kts, location D, course W.
You are south of it. If you sail to its mentioned location it is not there anymore. So you need to plot a course in front of the convoy.
1 kts = 1.852 kph.
Distance traveled in km divided by speed in kmh = time traveled
Speed in kmh = kts times 1.852
Then you can start calculating gow long it will take tje convoy as well as yourself to reach a certain intercept point.
On that basis you can decide to go for it or let it go.
OLtzS Ashikaga
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