Jilly is a 6 foot (1.83m) dinghy, built in 6mm plywood like her bigger sisters, the 2.0m and 2.3m versions. Jilly and the 2.0m dinghy come from two sheets of ply, the 2.3m dinghy uses 2&1/2 sheets of plywood. These boats can be rigged to sail and can carry a small outboard. Respective beam dimensions are 1.17m, 1.25 m and 1.26m.

The plans include full size template sheets for transverse members, a sheet with the panel layout and offsets, and a construction/arrangement drawing.