Jong sarat means "a fully laden boat," and the cloth earns the name: a single-colour silk ground vanishes under gold supplementary weft, motif touching motif from selvedge to selvedge. It is the richest of Brunei's six songket types and belongs to the bunga penuh, or full-pattern, class — no resting ground anywhere.

The system takes that discipline literally. A royal-yellow field carries a continuous geometricised repeat; gold is built thread by thread, never as a smooth gradient; crimson does the work of legibility because gold on yellow will not. Everything steps onto the weave grid, with the small row-to-row drift a hand loom leaves behind.