Synoptic charts — Seamanship, Mashit 30
23 questions on synoptic charts, from the Seamanship exam of Mashit 30. Reading the chart: wind direction, lows, fronts and isobars. Every question is shown with its correct answer, as in the official question pool.
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Questions on Synoptic charts
- Which statement about the synoptic chart shown is correct? Picture 2 is before the cold front passes: the sea is high and the wind is a strong south-westerly.
- With reference to the attached chart, what will the wind direction be where isobar 1004 meets the island of Cyprus? South-easterly.
- With reference to the attached chart, and taking the depression as stationary for this question, what will the barometric pressure trend be when sailing from A to B? The barometric pressure is steady.
- With reference to the attached chart, what will the wind direction be at point C? The wind at this point will be northerly to north-easterly.
- With reference to the attached chart, what will the wind direction be in the Bosphorus strait (in Turkey), ignoring the effect of the topography? Westerly.
- The diagram shows a horizontal section (plan view) of a frontal depression in the northern hemisphere. You are sailing from B to A. What will the atmospheric pressure trend be while you cross the warm air mass (the warm sector)? Steady pressure.
- As the vessel crosses the warm front from point B to point A, how will the wind direction change? From southerly to south-westerly.
- Sailing from the cold front towards point A, how will the visibility change? Visibility steadily improves.
- According to the attached diagram, choose the correct statement: This is a sharav (hot, dry) low typical of spring; winds at Eilat will be southerly, about 15 knots, and visibility along Israel's Mediterranean coast will be poor.
- According to the diagram (northern hemisphere), choose the correct answer: At point A the wind will be north-westerly and the estimated pressure 1010.
- Choose the most correct answer about the diagram: This is a sharav (hot, dry) low that ends in a violent break (in spring).
- According to the diagram, what will the wind direction be over Crete? Northerly.
- According to the diagram, what will the wind direction be at Eilat? South-westerly.
- According to the diagram, where are the strongest winds expected? Between Cyprus and the coast of Israel.
- What will the wind direction be in the south of Israel, along the coastal plain? A south-westerly wind.
- On the attached synoptic chart, where are cumulonimbus clouds expected to develop? At point L.
- From the synoptic chart below (north is at the top of the page), sailing from A to B and assuming the front is not moving, what is the wind direction on your track before you cross the warm front? South-westerly.
- From the synoptic chart, what clouds, if any, will there be at point O? Cumulonimbus clouds.
- From the synoptic chart, where is visibility expected to be best? At point A.
- On the attached synoptic chart, what is the wind direction at point B? None of the above.
- On the attached synoptic chart, choose the most correct statement about visibility: Visibility at point A is very restricted.
- Using the attached synoptic chart: you are sailing from Cyprus to Israel on a course of 150°. On what point of sail and tack is the yacht for most of the passage? Beam reach, port tack.
- According to the attached chart, what will affect the island of Cyprus? The cold sector of the winter low.
More Seamanship topics
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