sentences:  The heraldic rank insignia of the officer (consisting of one or two anchors) is placed under the shield.The commands and the units of the Portuguese Navy are also entitled to the use of heraldic flags, that – depending on the type of unit – can be in the form of a standard, a guidon or a pennon.An item of naval heraldry in the Royal Australian Navy (RAN) is referred to as a "ship's badge", although the incorrect "ship's crest" is sometimes used.