Oyster-fishing, showing the "kife" of the Billy Dredge (i.e. when dredge is set at a slant)

Rigs and Ridges.

Oyster-dredge and net.

Oyster fishing, 'The Billy dredge', used on rough seabeds.

Oyster-fishing , 'the bay dredge', for use in dredging for oysters on soft sea bottoms.

Oyster fishing - two types of dredges used - 'The Billy dredge' and 'The Bay dredge'.

Rigs and Ridges.