A320 FLC HAS HYD SYS FAILURE; DECLARES EMER; LANDS AT SEA.

Narrative

WHILE AT CRUISE FL350; WE GOT AN ECAM FOR THE GREEN HYD SYS LOW LEVEL. THE ECAM DISPLAY PAGE FOR THE HYD LEAK SYS VERIFIED THIS WITH A SCHEMATIC DISPLAY. WE ACCOMPLISHED THE ECAM IMMEDIATE ACTION ITEMS AND THEN REFED THE FLT MANUAL FOR FURTHER INFO. WE THEN CONTACTED SAN FRANCISCO MAINT AND DISPATCH THROUGH COMMERCIAL RADIO FOR FURTHER RESOURCES AND DIRECTION. AFTER SOME TROUBLESHOOTING WITH MAINT; WE ACCEPTED THE GREEN SYS AS LOST FOR THE REMAINDER OF THE FLT. WITH DISPATCH CONCURRENCE; WE DECIDED TO CONTINUE TO SEA WITH WX BASIC VFR IN SEA AND SINCE WE WERE BY NOW JUST E OF THE JAKSN INTXN ON THE GLASR 5 ARR SEA. WE CONTACTED THE PURSER AND BRIEFED HER AND DIRECTED HER TO LEAD A PREPARATION FOR EVAC ON LNDG DUE TO THE CHANCE OF LOSS OF DIRECTIONAL CTL CAUSED BY A LOSS OF NOSEWHEEL STEERING RELATED TO THE SYS FAILURE. WE FOLLOWED FLT MANUAL PROC WITH AN UNEVENTFUL LNDG IN SEA ON RWY 16L TO A FULL STOP ON THE RWY CTRLINE. WE WERE THEN TOWED FROM THE RWY TO A GATE IN SEA WHERE WE TURNED THE ACFT OVER TO MAINT.