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. - First Mate Xavier says the "Ile de Brehat" easily survives 20 meter waves, but to securely lower the cable to the seabed 3 meter waves will be the maximum. -. -- PHOTO: Juha ROININEN / EUP-IMAGES