At least 192 people have reportedly been killed after a ferry carrying 600 passengers sank off the Tanzanian coast.
The boat, MV Spice Islanders, sank in an area of deep sea after leaving the mainland port of Dar es Salaam.
Hundreds of passengers are still missing, many of them children.
Survivor Yahya Hussein, 15, said: "I realised something strange on the movement of the ship. It was like zigzag or dizziness.
"After I noticed that I jumped to the rear side of ship and few minutes later the ship went lopsided."
He said there were many children on the ship.
Another survivor Mwita Massoud said that after the ship began to list, water rushed through the main cabin and stopped the engines.
Many potential passengers had refused to board because it was so overloaded.