Anchor, (fr. ancre): this is frequently used as a charge, or crest, emblematical of hope, or of naval service. In old examples it is not unfrequently ringed at the point as well as at the head.
An architectural Arch used as a charge in heraldry. Usually shown as a castle’s Arch, but the Bridge Arch also appears, but will be blazoned as such.
The arc from the bible’s great flood is found occasionally in heraldry. It can be seen as the primary charge on the shields of individuals, municipalities and corporations.