Considering the general circulation of the atmosphere，the wind system between latitudes 30°N and 60°N is commonly called the（）.

Chart legends printed in capital letters show that the associated landmark is（）.

Coast Pilots and navigational charts are kept corrected and up-to-date by using the（）.

Dacron sails，when not in use，may be damaged if（）.

Compared to internal structural plating，the exterior hull plating on a ship is usually（）.

Daylight savings time is a form of zone time that adopts the time（）.

Control of fire should be addressed（）.

Cyclones that have warm sectors usually move（）.

Coiling new rope against the lay，bringing the lower end up through the center of the coil，then coiling with the lay，in order to remove the kinks，is known as（）.

Define the acronym MSI（）.