The present invention relates to a rebuilt double hull tanker and a method of
rebuilding an existing single hull tanker into a rebuilt double hull tanker. The
rebuilt double hull tanker includes an internally rebuilt double bottom hull comprising
the existing outer bottom hull and a new inner bottom hull that is disposed internal
and spaced apart from the existing outer bottom hull and externally rebuilt double
side hulls (e.g., port and starboard) comprising the existing inner side hulls
and new outer side hulls disposed external and spaced apart from the existing inner
side hull. The method includes forming the new double hull, including a new double
bottom hull and new double side hulls, over at least the cargo carrying portion
of the tanker by installing at least a portion of the new inner bottom hull internally
over the existing outer bottom hull through cut-outs in the topside decking. The
method also includes the use of model basin testing and computational fluid dynamics
to assist in the hull design in the area of the transition regions between the
new outer side hull and the existing side hull.
