A group of 103 retired Turkish admirals were acquitted on Tuesday after President Recep Tayyip Erdogan accused them of preparing a coup last year. The state media report this.
According to the state news agency Anadolu, the court ruled that there was no evidence of a crime.
The public prosecutor had asked for 12 years in prison for each of the former admirals. They remained free pending trial.
They had to go to court because they had signed an open letter in April last year asking them to comply with the Montreux Convention. That treaty, from 1936, aims to demilitarize the Black Sea by establishing strict rules for the passage of warships over the Bosphorus and Dardanelles.
However, Erdogan wants to dig a new canal in Istanbul, west of the Bosphorus, to relieve them of one of the busiest waterways in the world. The admirals believed the treaty would be undermined by the new canal, with negative consequences for Turkey.