The second database issued these warnings when the affected table was repaired:

shipdata.shipinfo repair warning Duplicate key for record at 1496 against record at...
shipdata.shipinfo repair warning Duplicate key for record at 1612 against record at...
shipdata.shipinfo repair warning Duplicate key for record at 1072 against record at...
shipdata.shipinfo repair warning Duplicate key for record at 976 against record at ...
shipdata.shipinfo repair warning Duplicate key for record at 796 against record at ...
shipdata.shipinfo repair warning Number of rows changed from 17 to 12
shipdata.shipinfo repair status OK