Based on the power spectrum inversion method to produce oceanic turbulence phase screen, the long-exposure beam radius, spot centroid wander features and irradiance scintillation features of different beam arrays (rectangle, radial, single beams) in different oceanic turbulence conditions are simulated and analyzed. Results show that long-exposure beam radius, standard deviation of spot centroid wander and on-axis scintillation index of array beams increase with increasing of turbulent effects. Simultaneously, the long-exposure beam radius of the beam array is tending to be equivalent with that of the single Gaussian beam. However, after a longer distance propagation, the radius of single beam is slightly larger than the array beam radius. Compared to a single beam, beam arrays have smaller wander standard deviation under the same turbulence conditions but larger scintillation index. The scintillation in oceanic turbulence is stronger than in the atmospheric turbulence.