We report the measurement and analysis of the complete perpendicular k(n) = +/- 2(1) <- 0(0) (D2O)(3) torsional band (origin 2940.9376(3) GHz), the upper state of which is the highest-energy (98.09912 cm(-1)) torsional state yet observed. All known torsional transitions were included in a new global analysis of the six observed torsional bands, using the effective Hamiltonians derived by van der Avoird et al. [M. R. Viant, M. G. Brown, J. D. Cruzan, R. J. Saykally, M. Geleijns, A. van der Avoird, J. Chem. Phys. 110 (1999) 4369; A. van der Avoird, E. H. T. Olthof, P. E. S. Wormer, J. Chem. Phys. 105 (1996) 8034]. The experimental results will facilitate the descriptions of three-body interactions in water intermolecular potential energy surfaces (IPSs). (c) 2006 Elsevier B.V. All rights reserved.