Suction. The drawing of a fluid by formation of a vacuum that the fluid is free to occupy. Technically applied to the effect of a large vessel passing a small vessel in confined waters; which may cause the smaller vessel to sheer towards the larger.
Sue. To require more water for notation. Word is loosely applied and is sometimes referred to the vessel, and sometimes referred to the water—'Vessel sues six feet' or Tide sued six feet'. In either case the vessel requires a further six feet of water to float. Often spelt 'sew, sewed'.