Three or four layers of mesh on each side of the rod framework was considered to
be the most suitable configuration, and calculation of the weights of various samples
of locally available mesh indicated that 4 layers per side of a 19 gauge 15 mm (5/8")
galvanized, hexagonal mesh would provide the necessary steel content. Unfortunately
there was no 12 mm (1/211) hexagonal mesh of a suitable gauge available at that time.
and supplies of 12 mm (1/2") 19 gauge welded mesh were too limited to permit
construction of the completed hull and, leek in this material. It was therefore
decided to use the hexagonal mesh for the compound curvature of the hull and retain
the welded mesh for incorporation in the flatter surfaces of deck and bulkheads.