Vessels sailing under the Cuba country flag are required to have on board this flag as part of flag state requirements that derive from maritime regulations in the International Code of Signals and the International Safety Management (ISM) Code. These codes are published by the International Maritime Organization (IMO) as an ongoing effort to reinforce maritime safety procedures and communications to the international maritime community. Fleet management companies and ship owners are responsible to ensure that each vessel in their respective fleets have the appropriate flag signage onboard to be in compliance. This flag is used to identify the flag state a vessel is sailing under and to communicate with other vessels under the provisions of the International Code of Signals.
The flag of Cuba is made up of five alternating horizontal stripes of blue and white. The left side of the flag, which is referred to as the hoist, is composed of a red equilateral triangle with a white five-pointed star. The triangle points toward the center of the Cuban flag. The three blue stripes on the flag(top, center, and bottom) represent Spanish-dominated colonial Cuba's three military districts( central, occidental, and oriental). The two white stripes represent the purity of the patriot cause. According to ancient tradition, white represents peace and honesty. The red equilateral triangle on the Cuban flag symbolizes strength and constancy, as well as equality, fraternity, and freedom. The color red stands for the blood shed in the long fight for independence. An equilateral triangle is one with three equal sides. This particular type of triangle was chosen to symbolize equality, which is very important to the Cuban people. In Cuba, the flag's single white star is called "La Estrella Solitaria," which means "The Lone Star." The star represents the total independence of the Cuban people.