4 ms·The short answer - sea water is highly corrosive and rockets are not exactly built water-tight.by neverminder 11y agoThe short answer - sea water is highly corrosive and rockets are not exactly built water-tight.cr1895 11y agoIt simply being on a barge at sea is still going to subject it to a corrosive environment. Especially if it encounters a lot of wind and waves on the trip back.jonknee 11y agoYes, but orders of magnitude less than being submerged for hours/days.deleted 11y ago[deleted]