A young Ashington side suffered a heavy defeat after making the short trip to Rockcliff on Saturday.
The visitors started brightly but lost full-back Cory Whitworth after 14 minutes with a serious looking gash above the eye.
The home side began to get on top and only a try saving tackle by Ash centre Brian Merryweather prevented a try in the corner.
But the home side dominated at this stage and scored six tries in 20 minutes to lead 36-0 at half-time.
In between those tries, player-coach Rosser had put in a couple of excellent tackles before coming of injured to be replaced by Gareth Bewick, and replacement full-back Acaster also made a try saving tackle.
In the second half Bay continued to score regularly and were the stronger team.
Ashington never gave up and continued to show flashes of what they could potentially achieve if they could put it all together for 80 minutes.
Young centre Nathan Whitworth put in a number of excellent tackles, hooker Tom Barratt nicked a couple of scrums against the head, and in Ashington’s best period of the game there were strong runs from winger Dawson and props Higham and Rutherford.
In the back row Newman and Turner continued to tackle well around the fringes but the extra fitness combined with some excellent Bay off-loading in the tackle meant Ash were never able to contain the home side.
Next week Ashington travel to table topping Ponteland before the league takes a break for Christmas, during which time they need to regroup and come back with a tighter more structured game plan and learn how to defend consistently and on the gain line.