'The Audacity of Hope' US Gaza flotilla boat 311 (R).
(photo credit: REUTERS/John Kolesidis)
Greek authorities intercepted the Audacity of Hope after it leaves Perama port.
The ship, carrying 36 American activists and four crew, was set to be part of the latest flotilla convoy to Gaza.
On Friday Greek officials said ships heading to Gaza would be detained.
Greece first inspected the Audacity of Hope
on June 27 after Israel claimed it was not seaworthy.