The house flag of Western Tug and Barge Co. Design: on a white field the initials 'WTB'. The T forms a device of an anchor fouled with chain. The flag is made of synthetic fibre bunting and is machine sewn. The design is printed. There is a cord running through the hoist with a loop at each end. The Western Tug and Barge Co. is based at Port Moresby, Papua New Guinea and operates on the Fly River.