It has been speculated that these frigates would possibly be catamarans based on the Tuo River - class hull .
In early 2016 , the ROC Navy began plans for procuring three air defense frigates .
ROC Navy has been speculated that these frigates would possibly be catamarans based on the Tuo River - class hull .
In early 2016 , the ROC Navy began plans for procuring three air defense frigates .