Over 100 people went missing, and dozens were killed, when an overloaded ferry capsized on its way from Tanzania’s mainland to the island of Zanzibar on Wednesday.
But it is not the first time an accident like this has happened.
Last year 200 people died off the coast of the island when another boat capsized - it was also overloaded.
Now, people are asking the government to regulate the ferry system for safety.
Al Jazeera's Malcolm Webb reports from Zanzibar.