Profiles of the special instanton (47) for Eq. (3) with the parameters (50) at times: (a) t = −5, (b) t = −3, (c) t = 0, (d) t = 2, (e) t = 10; (f) the relevant wave height of predictable rogue waves in y = 0 plane at t = −3 (blue), t = 0 (red) and t = 2 (black).