Another of the status determination criteria (SDC). The greater of (a) 1/2 BMSY, or (b) the minimum stock size at which rebuilding to BMSY will occur within 10 years while fishing at the maximum fishing mortality threshold (MFMT). MSST should be measured in terms of spawning biomass or other appropriate measures of productive capacity. If current stock size is below Bthreshold, the stock is overfished.