SEAHAM took their sparkling league form into the Durham County Plate quarter-final, beating Chester-le-Street 28-0 to make the semis.
Several handling errors by the hosts in the opening 15 minutes made for a tense atmosphere.
But second-rower John Dixon calmed things down in the 19th minute when he took a pass from Brad Green and drove over to make the score 5-0.
Six minutes later Chester were judged offside and Brad Green put the penalty over for an 8-0 lead on 26 minutes.
Chester defended and threatened to score on several occasions, but a remarkable try-saving tackle by centre Jon Dye on the stroke of half-time kept their line clear.
Dye was also in good form with his boot, stretching the lead to a healthy 14-0 with two penalty kicks.
Seaham scored their second try of the day on 68 minutes when prop Gary Lynn finished off a rolling maul, Dye converting to make it 21-0.
On 74 minutes a Chester centre was yellow-carded for a high tackle on hooker Andrew Baxter and Seaham took immediate advantage, Joey Jones scoring his fourth try of the season. Dye added the conversion