SB Pudge is a wooden Thames sailing barge, built in Rochester, Kent, England in 1922. Her hull was pitch pine on oak frame. She was originally spritsail rigged with bowsprit. An auxiliary oil engine made by The Bergius Co.Ltd of Glasgow was installed in 1932. She was used to carry various cargoes for the London & Rochester Trading Co until 1968, when she was bought out of trade by the Thames Sailing Barge Trust. Her last cargo was pineapple juice.

A Thames sailing barge is a type of commercial sailing boat once common on the River Thames in London. The flat-bottomed barges, with a shallow draught and leeboards, were perfectly adapted to the Thames Estuary, with its shallow waters and narrow tributary rivers. The larger barges were seaworthy vessels, and were the largest sailing vessel to be handled by just two men. The average size was about 120 tons and they carried 4,200 square feet (390 m2) of canvas sail in six working sails. The mainsail was loose-footed and set up with a sprit, and was brailed to the mast when not needed. It is sheeted to a horse, as is the foresail; they require no attention when tacking. The foresail is often held back by the mate to help the vessel come about more swiftly.