Changes
→Nansei Islands off the coast
! scope="col" style="text-align: center;"|Area
! scope="col" style="text-align: center;"|Area
! scope="col" style="text-align: center;"|Pattern
! scope="col" style="text-align: center;"|Pattern
! scope="col" style="text-align: center;"|Vessels
! scope="col" style="text-align: center;"|Encountered Vessels
! scope="col" style="text-align: center;"|Formation
! scope="col" style="text-align: center;"|Formation
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