Funeral prayer for one who is lost at sea
Question

                Can janaazah prayer be offered for someone who is missing, lost at sea, if the qaadi (judge) rules that he is dead?
Praise be to Allah.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.