Ten days after the missing Argentine submarine San Juan went silent, grieving relatives have begun mourning the loss of its 44 missing crew members with a religious ceremony Saturday, even though the navy has yet to declare them dead. A religious service is set to be held at 12:30 pm (1530 GMT) outside the Mar del Plata naval base, where the submarine was based, to support grieving friends and relatives. The search for the San Juan "will continue day and night with help from 13 countries," navy spokesman Captain Enrique Balbi said late Friday.