Barling

A tripod can be formed of three hop poles or barlings. The former can be laid in depths up to 2^ metres and the latter in depths up to about 5 metres at low water if the tidal range does not exceed about 3 metres.

[...] one pair of fetters, one pair of couplings, 2 barlings [poles], 2s 6d; one saddle, one bridle, one panel, 12s; one corn hutch and 1 chaff bin, 6s 8d; one plough, one pair of harness and one coulter, 2 plough sha-[rest torn] with chains, 14s.

On shallow waters they moved upstream using small barlings; [...]