Vessels sailing under the Taiwan 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 Taiwan Country Flag is currently recognized as a deep red background. It has a blue rectangle displayed in the canton, or upper hoist side (left) quadrant, with a depiction of a white sun producing 12 sharp rays. The rays are distinctly separated from the round body of the sun by a blue circle. Taiwan has changed flags on several occasions during modern times. The country currently displays this flag as a held territory of the Republic of China. The Taiwan Country Flag under the Republic of China is designated to be proportioned at a ratio of 2:3, height to length, respectively. The colors are said to represent ideals of the Chinese political philosophy. The red stands for red earth, signifying the blood of those who fought for the country. The white sun signifies democracy and equality, while the 12 rays emanating from it concern the 12 months of the year and 12 hours of the day at Equinox. Blue is meant to stand for nationalism and liberty defined by Sun Yat-Sen, founder of the Republic of China.