  We investigate the hydroelastic wake created by a perturbation moving at
constant speed along a thin elastic sheet floating at the surface of deep
water. Using a high-resolution cross-correlation imaging technique, we
characterize the waves as a function of the perturbation speed, for different
sheet thicknesses. The general theoretical expression for the dispersion
relation of hydroelastic waves includes three components: gravity, bending and
stretching. The bending modulus and the tension in the sheet are independently
measured. Excellent agreement is found between the experimental data and the
theoretical expression.
