Description of the kinetic classification algorithm (KiC). (A) KiC flowchart: buoy speed history corresponds to speeds recorded 3 days prior to the buoy position. (B) Example illustrating speed changes in constant sequences (consecutive positions with the same predicted status: “on-board” − “on-board” or “at sea” − “at sea”), and transition sequences (consecutive positions with shift in status: “on-board” − “at sea”, “at sea” − “on-board”) from the D1 dataset in the Atlantic Ocean. Values represent the number of data in each sequences.