sentences:  Where ships and shore units are named after provinces and towns, their badges incorporate elements of the provincial or civic arms, for example the ox-wagon in the badge of the frigate SAS "Transvaal".Those named after historical personalities incorporate their namesakes' personal coats of arms, or elements of their arms, in their badges, for example the shield of the Van Riebeeck arms in the badge of the destroyer SAS "Jan van Riebeeck".For some categories of ships, including the "Daphné"-class submarines, Minister-class strike craft, and River-class minehunters, standard badges were designed, which were then differenced to identify individual vessels.