One narrow stripe of gold rank lace, composed of two waved lines of intersecting gold braid, forming a star-shaped curl, above a stripe of purple velvet, embroidered onto a dark blue, cuff cloth slip.
As the Royal Navy civil branches' uniforms moved closer to those of the executive, new means of distinction were introduced. One such method was to use coloured cloth in the space in between rank stripes. Engineer and accountant officers wore the same coloured stripes as the Royal Navy. Purple was used to denote the engineering branch.