Nasdaq-listed Castor Maritime has pulled off its biggest secondhand coup to date with an en-bloc deal for five product tankers.

The rapidly expanding Cyprus-based owner said it is paying $49.5m for the South Korean-built ships.

Castor is getting its hands on two unnamed, 2006-built MR1 carriers, two aframax/LR units built in 2004 and a 2002-built aframax/LR2.

The seller is an unaffiliated third-party.