The vessel, which has been enlisted from Egypt's oil ministry,
has been sent to search the seabed of the Mediterranean, Egypt's President
said.
Flight MS804 came
down at 2.45am local time on Thursday, south of the Greek island of Karpathos
and north of the Egyptian coast.
It was carrying 66 passengers and crew from Paris to Cairo at
the time and is suspected to have crashed into a part of the sea that is
several thousand metres deep.
The plane's
black boxes are yet to be found but emit a signal for four to five weeks after
a crash in water.
Despite his officials previously saying terrorism was the most
likely cause, Egyptian President Abdel Fattah al Sisi said:
"All the theories are possible.
"There is
no particular theory we can affirm right now."
Ships scouring
the sea have already found body parts, personal belongings and wreckage from
the Airbus 320.
The US Navy's Sixth Fleet said one of its patrol aircraft had
seen more than 100 pieces of debris identified as having come from an
aircraft.
They said the
data was passed to the Egyptian Navy.
EgyptAir Holding
Company chairman Safwat Moslem said the priority was finding the passengers'
remains and the flight recorders.
"The
families want the bodies. That is what concerns us. The army is working on this.
This is what we are focusing on," he said.
It came as the
first funerals of the victims took place.
Hundreds of family and friends of air stewardess Yara Hani
Tawfik gathered at St Mary and St Athanasius Church in Cairo on Sunday morning.
Others attended
a Coptic cathedral in Cairo to mourn two other victims, Medhat
Tanious and Wagih Moris.
On Saturday,
data showing trouble in the cockpit and smoke in a plane lavatory emerged.
It provided a
window into the doomed jet's last three minutes before contact was lost, with
multiple alarms going off, one after another.
Experts said the
short time it took to descend 38,000ft into the sea indicated that a sudden,
catastrophic event brought it down.
Aviation
security expert Philip Baum said: "If they lost the aircraft within three
minutes that's very, very quick. They were dealing with an extremely
serious incident."
Several other
nations, including the UK, are involved in the search of the Mediterranean.
The first
available audio to have been released indicates there were no problems when the
crew checked in with air traffic controllers in Zurich, Switzerland, late on
Wednesday night.
