vessel         origin                   type  in service                   unit
0  oliver hazard perry class  united states                frigate           2  anti - submarine unit
1               kobben class         norway              submarine           4         submarine unit
2                 kilo class   soviet union              submarine           1         submarine unit
3                orkan class   east germany      fast attack craft           3   missile vessels unit
4             tarantul class   soviet union               corvette           2   missile vessels unit
5                project 888         poland          training ship           1           support unit
6                project 281         poland            rescue ship           2           support unit
7               project 5002         poland            rescue ship           2           support unit
8                project 863         poland  reconnaissance vessel           2   reconnaissance group

Table as JSON:
{"vessel":{"0":"oliver hazard perry class","1":"kobben class","2":"kilo class","3":"orkan class","4":"tarantul class","5":"project 888","6":"project 281","7":"project 5002","8":"project 863"},"origin":{"0":"united states","1":"norway","2":"soviet union","3":"east germany","4":"soviet union","5":"poland","6":"poland","7":"poland","8":"poland"},"type":{"0":"frigate","1":"submarine","2":"submarine","3":"fast attack craft","4":"corvette","5":"training ship","6":"rescue ship","7":"rescue ship","8":"reconnaissance vessel"},"in service":{"0":2,"1":4,"2":1,"3":3,"4":2,"5":1,"6":2,"7":2,"8":2},"unit":{"0":"anti - submarine unit","1":"submarine unit","2":"submarine unit","3":"missile vessels unit","4":"missile vessels unit","5":"support unit","6":"support unit","7":"support unit","8":"reconnaissance group"}}