A.Mercator charts/Loran charts B.Admiralty charts/Routeing charts C.large scale charts/small scale charts D.small scale charts/large scale charts
A.Plotting radio bearings over a long distance B.Determining latitude and longitude of a fix C.Measuring rhumb line distances D.Measuring rhumb line directions
A.warm front at night B.low pressure area C.anticyclone D.lack of frontal activity