The Joola ferry disaster claimed more lives than the sinking of the Titanic in 1912, in which 1,563 people died.
"I am not angry that my sons died, that was God's will. I am angry at the way the aftermath of shipwreck was handled," Mr Diallo says.
How can I say I have grieved when I have not found my children's bodies
Idrissa Diallo, Association of families of Joola victims
He now heads an association for families of the more than 1,800 victims of the accident.
Holding his five-year-old daughter tightly on his lap, he calmly recalls the events of the morning of 26 September 2002.
"I was in the United States visiting family when I received a phone call from Ziguinchor early in the morning telling me the Joola had sunk and that no children had survived.
"My three sons [aged eight, 13 and 15] were on it, they were returning from a visit to their grandmother in Casamance, where my family is from."
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