The edge of a hurricane has overtaken your MODU in the Gulf of Mexico and the northwest wind of a few hours ago has shifted to the west. This is an indication that you are located in the __________.

Correct Answer: Option A — navigable semicircle

In the Northern Hemisphere, if the wind shifts to the right (clockwise), the vessel is in the dangerous semicircle. If the wind shifts to the left (counter-clockwise), the vessel is in the navigable semicircle. A shift from northwest to west indicates the storm is passing, placing the unit in the navigable semicircle.