CALAIS - FRANCE - 20 May 2015 -- In October 2015 the French ship "Ile de Brehat" will start laying a 1200 km long subsea optical cable from Helsinki to Rostock Germany. - The sea-plow in the back of the ship will dig a one meter deep ditch into the bottom of the sea where the subsea optical cable will be embedded. -- PHOTO: Juha ROININEN / EUP-IMAGES