what are the names of the different classes of ships?
rari class, malabar class, ut507 class, ut515 class, ut710 class, ut711 class
what are the different displacement sizes of the classes?
1,450 tonnes, 1,440 tonnes, 1,500 tonnes, 4,000 tonnes, 2,100 tonnes, 2,000 tonnes, 2,250 tonnes
what is the size of the displacement for the rari class ships?
1,450 tonnes