June 22, 2018 the Portuguese Prime Minister announced an additional order of 6 Viana do Castelo Class ships( 60 million euros each) to be built at same shipyard over next 6 years along with a multi purpose ship for a total of 500 million  euros.
June 22, 2018, the Portuguese Prime Minister made an additional purchase order of 6 Viana do Castelo Class vessels (valued at 60 million euros each) to be constructed at the same shipyard over the next six years, in conjunction with a versatile vessel worth a total of 500 million euros.