Vessels sailing under the Belize 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.
Belize's flag has a royal blue background with white circle containing the national coat of arms of Belize in the center. The flag has two red stripes on the top and bottom and were added to the original flag design at its independence, to denote the Opposition party. The blue color represents the PUP (People's United Party) and the 50 leaves are for the year 1950 when PUP came into power. The shield of the Coat of Arms, which makes up the majority of the Belize flag consists is divided into three sections. The base section represents a ship on waves in the sea, while the two upper sections show tools of the Timber Industry in Belize. Holding up the shield are two woodcutters, one holding a beating axe, the other holding a paddle over his shoulder. Below the Coat of Arms is the motto "Sub Umbra Floreo", which means "Under The Shade I Flourish." The flag also has decorative greenery to represent Belize's beautiful lush countryside, and landscape.