On April 22, 2021, King Felipe and Queen Letizia, accompanied by Crown Princess Leonor and Infanta Sofía, attended the launching ceremony of submarine S-81 "Isaac Peral", the first of a series of four submarines that will enter service in the Spanish Navy in the coming years. The official ceremony was broadcasted live. The Royal Family also toured the facilities of Spanish company Navantia's shipyard in Cartagena.