URANS prediction of hydrodynamic interaction between LHD and supply vessel during replenishment in calm water

Replenishment at Sea (RAS) is used extensively for transferring fuel and supplies while two ships are underway. It iscrucial for naval vessels that require prolonged endurance whileminimising the weight of the vessels. It eliminates the need ofreturning to ports for refilling. When the ships are to manoeuvreadjacent to each other towards the same direction at constantspeed, hydrodynamic forces will form in between the ships dueto the close proximity and thus affect the manoeuvring capabilityof the vessels. The ships may experience a force which attractsthem towards or repels them away from each other. This increases the risk of collision or capsize if care is not taken duringthe operation. Therefore, it is important to investigate ship toship interactions in order to develop an applicable solution forsafe operations