10 Questions
What is the approximate geographic visibility of an object with a height above the water of 26.0 meters for an observer with a height of eye of 18.25 meters?
20 nautical miles
How would you approximate the height above sea level of the bases of the middle clouds?
The base is between 6,500 ft - 20,000 ft
What is the latitude of a place where the sun is exactly at the zenith of the observer at Local Apparent Noon (LAN) of 22nd or 23rd day of September?
Latitude 00 degrees 00 minutes
How would you define relative humidity?
It is the ratio of the existing absolute humidity to its saturation value at the same temperature.
How would you describe relative humidity based on your understanding?
It is the ratio of the existing absolute humidity to its saturation value at the same temperature.
What does a Global Positioning System (GPS) receiver measure to compute its position?
The difference in time from signal transmission to reception
Which publication onboard should be referred to for reckoning the height of tides at a specific place?
The same tide tables as that used for the charts of the locality
How can RADAR be helpful in weather forecasting when weather messages are incomplete or unavailable?
The radar beam is intersecting precipitating clouds, indicating front intensification
What is the correct light color for the WEST cardinal marks used in IALA Region A and Region B?
White
What is the wind speed range for a Beaufort force 8?
Wind speed 48 to 55 knots mean 52 knots
Test your knowledge on determining the geographic visibility of objects above water and approximating the height above sea level of cloud bases. Choose the correct answers to various scenarios related to visibility and cloud base altitudes.
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