Reua Thong Kwahn Fah is the name of the first escort barge on starboard in the Royal Barge Procession, sailing parallel to the Reua Thong Bah Bin (fig.), i.e. the first escort barge that opens the procession on the port side.

The outside hull is painted black, without any pattern, and the bow and stern are gilded. This barge is 32.23 meters long and has a crew of 42, that is 38 oarsmen, a flagman, 2 helmsmen, and one naval officer of the rank of lieutenant. The oarsmen wear a red uniform trimmed with gold, including a brimless hat with earflaps.