Francisco ( 7000 tona ) , C«lorado ( 5 , 000 tona ) , Buffalo ( 5 , 500 tons ) , Martel lo ( 5 , 000 lons ) , Himloo ( 5 , 500 tens ) , Galileo ( 4 , 000 tons ) , Apollo ( 5 , 000 tona ) , Chicago ( 4 , 000tons ),