**5. Conclusion**

A critical review of the literature brings out the following: Several AUV, AUG, submarine and similar vehicle shapes had been treated using the CFD approach. A nearly exhaustive list of these shapes are: Afterbody 1, Afterbody 2, modified spheroid and F57, AUV Rainbow, AUV Cormoran, AUV Autosub and AUV Soton, AUG Alex, AUV PICASSO, AUV Petrel, AUG USM, AUV Flinders, toy submarine USS Dallas and AUG Seawing. From the literature, it is observed that the use of CFD in the hydrodynamic design of UVs is finding increasing acceptance, as is evident by the fact that about 15 UV shapes have been treated. The CFD methodology adopted in the present work has been validated with a few example problems from the literature. The hydrodynamic parameters computed by CFD are drag and wave resistance.
