"with it's delivery in October. one could say, why not crate the Leads, but by mounting them on the carousels they could more easily be transferred onto the Subsea Deployment Baskets" and snapped into place! bingo I think you nailed it.
Notice that the uprights on these carousels are smooth and rounded like the SDB uprights and unlike the previous carousel's uprights, this would lend itself to a smoother, easier unloading out the top, just like the unloading from a SDB.
SDB evolution, a subsea deployment basket with a reloadable carousel cartridges.
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