The origin of the age of great navigation? What boat does the level 5 operator use?

Class 5 operators, who originated in the era of great navigation, suggest choosing a ship with larger load, faster speed and lower fuel consumption. In the course of business operation, affected by pirate attacks and weather, it is necessary to consider factors such as ship's deadweight, speed and fuel consumption to maintain good ship maintenance and navigation safety. So choose a ship with larger load, faster speed and lower fuel consumption.