The atmosphere -- Solar radiation and temperature -- Humidity and condensation -- Classification of clouds -- Cloud formation and development -- Precipitation -- Thunderstorms -- Visibiuity -- Atmospheric pressure and wind -- Waves, sea and swell -- Air masses and associated weather -- Isobaric patterns -- Fronts and frontal depressions -- Non-frontal depressions -- Anticyclones -- Tropical revolving storms -- Avoiding the worst effects of a tropical revolving storm -- Weatiier forecasting for the seaman -- Forecasting the mariner's own weather -- Ocean surface currents -- Sea ice -- Weather routeing -- Meteorological aspects of radar -- Meteorological factors of planning an ocean passage -- Brief notes on observations and instruments.