Spinnaker Sailing
Navigation and Weather Quiz

These questions and their answers are gleaned from the USCG Mariners Tests, and we trust in them for their accuracy. There are over 700 questions regarding weather and navigation here and all quiz questions are picked randomly. Questions are graded individually and you do not have to answer all questions to check your answers. Don't be discouraged if you miss a few questions, some of them are pretty hard. However, the more you take this test the more you will learn!
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Question 1 - In a river subject to tidal currents, the best time to dock a ship without the assistance of tugs is ...
) at high water
) at slack water
) at flood tide
) when there is a following current

Question 2 - Under the IALA cardinal system, a mark with a quick light showing 9 flashes every 15 seconds indicates that the safest water is on the ...
) north side of the mark
) west side of the mark
) east side of the mark
) south side of the mark

Question 3 - Which buoy may be even numbered?
) Mid-channel buoy
) Unlighted nun buoy
) Lighted green buoy
) All of the above

Question 4 - If a magnetic compass is not affected by any magnetic field other than the Earth's, which statement is TRUE?
) Compass error and variation are equal.
) Compass north will be true north.
) Variation will equal deviation.
) There will be no compass error.

Question 5 - What is a lighted safe water mark fitted with to aid in its identification?
) A spherical topmark
) Red and white retroreflective material
) A sequential number
) A red and white octagon

Question 6 - Information about currents on the Pacific Coast of the U. S. are found in the ...
) Tidal Current Tables
) Nautical Almanac
) Tide Tables
) Ocean Current Tables

Question 7 - If it is impossible to avoid a hurricane in the Northern Hemisphere, the most favorable place to be when the storm passes is in ...
) the dangerous semicircle
) the eye (center) of the storm
) that half of the storm lying to the right of the storm's path
) that half of the storm lying to the left of the storm's path

Question 8 - The steady current circling the globe at about 60° S is the ...
) Prevailing Westerly
) Sub-Polar Flow
) West Wind Drift
) Humboldt Current

Question 9 - Spring tides are tides that ...
) have lows lower than normal and highs higher than normal
) have lows higher than normal and highs lower than normal
) are unpredictable
) occur in the spring of the year

Question 10 - You are enroute to Jacksonville, FL, from San Juan, P.R. There is a fresh N'ly wind blowing. As you cross the axis of the Gulf Stream you would expect to encounter ...
) smoother seas and warmer water
) steeper waves, closer together
) long swells
) cirrus clouds