society > travel > travel by water > vessel, ship, or boat > shipbuilding and repairing > [noun] > shipbuilding > mould
1846 A. Young 245 Ram-line,..a small rope..for forming the sheer of the ship:..adjusted on the ship's side by means of a long thin plank, called the sheer~mould.
1867 W. H. Smyth & E. Belcher Sheer-mould, synonymous with ram-line.