The standards of the independent bodies are square (75 cm × 75 cm), being a quadrature of the respective coat of arms. The flags to be flown are similar, but their dimensions can vary. The standards of the sub-units of battalion size have the center of the field occupied by the quadrature of its mother unit coat of arms, with a bordure of the main metal of the arms, with the angles occupied by a color or fur which identifies the order of the sub-unit inside the unit. It is notable that while the battalion flags were traditionally referred as "guidons" (guiões), this new designation implemented in 1987 broke with that tradition. The company size sub-units bear a pennant (75 cm × 25 cm forked flag) with a quadrature of its mother battalion near the host and the tips with a specific color that identifies the company inside the battalion. Independent companies bear battalion type standards and not pennants. The Portuguese Army has its own heraldic authority, the Directorate of Military History and Culture, through its Section of Heraldry. Navy heraldry Portuguese Naval heraldry is regulated by the Office of Naval Heraldry, under the 2010 Regulation of the Heraldry of the Navy, that replaced the previous Regulation of 1972. The coat of arms of the Navy is a field azur with a dolphin argent, a naval crown or, a scroll with the war cry São Jorge (Saint George) on the top and a scroll with the motto Talant de bien faire (Talent to make good) on the bottom. This coat of arms, including its external elements, but represented in a round shield flanked by a laurel wreath in dexter and an oak laurel in sinister, constitutes the badge of the Navy. Besides the Navy itself, the following bodies have the right to bear coats of arms: the Naval Command and the maritime zone commands, the bodies that are part of the Naval Command that are headed by commanders or officers of higher rank, the bodies of the National Maritime Authority, the Hydrographic Institute, the frigates, corvettes, submarines, training ships and other naval units commanded by commanders or officers of higher rank, permanent naval forces and groups, other bodies headed by captains or officers of higher rank, the Naval Staff and the Naval Band. When authorized by the Chief of Staff of the Navy, a coat of arms can be granted