20 Questions
What can change the polarity of the magnetic properties of a vessel?
Being struck by lightning
What does encountering a white buoy marked with an orange rectangle indicate?
Mid-channel
With an anticyclone over Europe, what is the expected weather?
Clear skies or fair weather CU in summer, fog in winter
What is the altitude measured with sextant corrected for dip and index error called?
Apparent altitude
What would you expect of the relative humidity of a place throughout the 24 hours of the day?
Highest during the morning and evening, lowest during midday and midnight
What is the tendency of magnetic lines of induction to concentrate on material of high permeability?
Magnetic shielding
Where is the compass card attached in a gyrocompass?
Spider element
If there are small cumulus clouds in the morning in summer, what kind of cloud never would you expect and is it reasonable to forecast later in that day?
Clear skies
What would be the behavior of the wind above the level of the ridge to indicate the formation of mountain waves?
Increase and then reverse in direction
If you are in the Southern Hemisphere as a general rule (Buy’s Ballot Law), how would you determine the center of high pressure?
Faces the surface of the wind the center of high pressure is in your right
What is the tendency of magnetic lines of induction to concentrate on material of high permeability?
Magnetic shielding
What can change the polarity of the magnetic properties of a vessel?
Loading a homogenious cargo such as steel plate and iron bars
Where is the compass card attached in a gyrocompass?
Spider element
Encountering a white buoy marked with an orange rectangle would indicate:
A fish net area
What is the speed of the wind in a Beaufort force 8?
Wind speed 48 to 55 knots mean 52 knots
With an anticyclone over Europe, what is the expected weather?
Clear skies or fair weather CU in summer, fog in winter
If there are small cumulus clouds in the morning in summer, what kind of cloud never would you expect and is it reasonable to forecast later in that day?
Clear skies
What do you call the altitude measured with sextant corrected for dip and index error?
Apparent altitude
If you are in the Southern Hemisphere as a general rule (Buy’s Ballot Law), how would you determine the center of low pressure?
Faces the surface of the wind the center of low is toward your right
What will you expect of the relative humidity of a place throughout the 24 hours of the day?
It decreases during daytime and increases at night
Test your knowledge of maritime navigation with questions about magnetic properties of vessels and buoy markings. Learn about the factors that can change the polarity of a vessel's magnetic properties and understand the significance of encountering specific buoy markings.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
