This paper describes the overall behavior of a new build barge to be spread moored offshore Brazil in 1,200 m water depth. The barge supports 12 dry trees located in a well bay near amidships. Experiments have been carried out on a scaled model of the barge in survival environments ranging from 4.7m significant beam waves to 7.8m significant bow quartering waves in the presence of wind and strong current. This model test campaign has been partly funded by five oil companies.