Vicinal water is an  ordered stacking that persists for three to four bilayers (1nm) before disorientation takes place.

Properties of structured water are different than "bulk" water.

Ultrafast Electron Crystallography of Interfacial Water by Chong-Yu Ruan, Vladimir A. Lobastov, Franco Vigliotti, Songye Chen, Ahmed H. Zewail
    2 APRIL 2004, VOL 304, SCIENCE