Funeral prayer for one who is lost at sea

We put this question to Shaykh Muhammad ibn
‘Uthaymeen, may Allaah preserve him, who answered as follows:

, Lord of the Worlds, and peace and blessings be upon our Prophet Muhammad, and all his family
and companions. Janaazah prayer can be offered for him, so long as he
is presumed dead, because we go by what is apparent and most likely
to be the case. So his wealth may be inherited if the qaadi rules that
he is dead, and his wife should wait out the ‘iddah period, then she
is free to remarry – so the janaazah prayer can also be offered for
him. And Allaah knows best.