Portugal is planning to supply new vessels. A statement was made at the name ceremony for Viana do Castelo (Oceanic Patrol Vessel / OPV) class NRP Sines (P363). Portuguese Prime Minister António Costa, who made the statement, announced that a multi-purpose logistical support vessel would be built for the Portuguese Navy. It is also mentioned that the new platforms will be built in local facilities. In addition, six new OPVs will be built on the West Sea-Estaleiros Navais shipyard. Portugal received three of the four OPVs it had ordered.

The Viana do Castelo ships are oceanic patrol ship, are being built under the NPO2000 Project. There are no hangar on ships. Ship has 83 meters in length and weighs 1,600 tons. Super Lynx MK95 type helicopters can be operated on the ship's halipad. Ships have ships 30mm Auto Melara Marlin gun. In addition to the two machine gun nests, ships capable of laying the MK55 Mod 2 mines ande also used in ocean patrol and pollution control missions.