B737-800 IS MARSHALLED INTO PARKING WITHOUT THE JET WAY BEING PROPERLY POSITIONED. THE MARSHALLER DOES NOT SEE THE PROBLEM; BUT THE CAPTAIN DOES AND STOPS THE ACFT IN TIME.

Narrative

ON ARR AT ZZZ; WE WERE MARSHALLED IN TO THE GATE. AS WE APCHED THE JETWAY ON OUR L; THE MARSHALLER KEPT MOTIONING US FORWARD. EVENTUALLY; IT GOT TO THE POINT WHERE I; AS THE CAPT; COULDN'T SEE THE JETWAY UNLESS I LOOKED WAY BEHIND WHERE IT NORMALLY SHOULD BE. IT APPEARED TO ME AS IF WE WERE GOING TO HIT THE JETWAY WITH OUR L ENG. I STOPPED THE ACFT; EVEN THOUGH THE MARSHALLER STILL WANTED US TO MOVE FORWARD. I LOOKED AT WHERE THE JETWAY WAS PARKED AND IT WAS OVER 20 FT FROM THE RED SAFETY SQUARE THAT IT IS SUPPOSED TO BE PARKED IN. I SHUT DOWN THE ACFT AND WHEN I COULD GET OFF THE ACFT; WENT DOWN AND LOOKED TO MAKE SURE NO CONTACT WAS MADE AND THEN TALKED TO OPS ABOUT THE SITUATION. OPS REPLIED THAT THEY ARE NOT USED TO HAVING 800'S IN ZZZ; AND THAT THE ARPT HAD PAINTED THE PARKING SPOT IN A MUCH DIFFERENT LOCATION THAN WHERE THE OTHER ACFT STOP. THE AGENTS OBVIOUSLY ARE IN A HABIT OF NOT REPOSITIONING THE JETWAY TO THE SAFETY SPOT AFTER THE ACFT DEPARTS THE GATE. THEY NEED TO BE COUNSELED THAT THE SAFETY SQUARE IS THERE FOR A REASON; AND THAT THEY WERE LUCKY NO DAMAGE WAS DONE THIS TIME -- THEY MIGHT NOT BE SO LUCKY NEXT TIME! THE GATE AGENTS NEED TO REPOS THE JETWAY AFTER EACH DEP -- AS I THINK THEY ARE REQUIRED! THE MARSHALLERS NEED TO BE AWARE OF THE FACT THAT THE ACFT IS MOVING INTO CLOSE PROX OF THE JETWAY AND STOP THE ACFT UNTIL IT IS MOVED! ACCIDENT POTENTIAL DUE IMPROPER MARSHALLING.