56 jail terms for Egypt shipwreck disaster
The charges they faced included manslaughter, negligence, using a boat for unlicensed purposes, endangering children, and organising illegal immigration.
Twenty-five people were sentenced in absentia while 31 others were present in court, according to officials who requested anonymity because they were unauthorised to speak to reporters.
One person was acquitted in the trial, whose verdict can be appealed, the officials said.
The boat, which was headed for Italy, sank off the Mediterranean port city of Rashid on September 21.
Survivors said up to 450 people had been crowded aboard the fishing trawler when it keeled over, including an estimated 100 in its hold.
The Egyptian military said at the time that 163 people were rescued.
Most of those rescued were Egyptians but they also included people from Sudan, Eritrea, Syria and Ethiopia, according to the United Nations refugee agency UNHCR.
Out of the different migration routes to Europe, "the journey to Italy is particularly dangerous, with more deaths at sea in the Mediterranean recorded in 2016 than ever before", UNHCR said in February.
"Of the 5,096 refugees and migrants reported dead or missing at sea last year, 90 percent travelled along the sea route to Italy, amounting to one death for every 40 people crossing," it said.
Crossings to Italy have multiplied since an EU-Turkey deal announced in March 2016 aimed at halting the flow from Turkey into Greece, the UNHCR said in February.
Since then, "the Central Mediterranean route from North Africa to Italy has since become the primary entry point to Europe", the agency said.
According to UNHCR's latest figures, 593 people have either died or gone missing in the Mediterranean this year.