The Shrimpers reserves started with two trailists in the side, Bermudian left-back Khano Smith and Portsmouth striker Danijel Subotic, as well as seven players with first team experience.
However, they still found themselves four down at the break in a disappointing start to their 2009/10 Totesport Combination League season.
Only eight minutes had gone with the Southend defence still introducing each other and already Chris Martin and ex-Dartford striker Cody McDonald had put two past Blues keeper Ian Joyce.
It was all Norwich and only Stuart O'Keefe eased the pressure with a strike well saved by the home shot stopper Theoklitos who must have been overjoyed by the evening's events after the trauma of letting in seven the last time he wore the keepers jersey for City.
It was only matter of time when the third would be scored and it was duly delivered by Gary Doherty slotting home from Wes Hoolahan's free-kick.
There was to be no safety of the dressing room at half time before Norwich grabbed a fourth in the 44th minute, Maric inside the six yard box from a McDonald cross.
Southend had to do better in the second period and started with Subotic shotting straight at Theoklitos.
It was not to last and on 56 minutes the Canaries went nap when awarded a free-kick 22 yards from goal. The former Preston winger Whaley stepped up and curled a beauty into the bottom left hand corner giving Joyce no chance.
Time left for Walker to go wide with a free-kick, Freedman to miss a decent chance and Theoklitos to make a stunning reaction save in stoppage time as this was not a night for any Shrimper consolation, and not a good start for trailists looking for contracts.
Norwich City: Theoklitos, Francomb (Brindley 78), Habergham, Doherty, Stephens (c), Russell (Dumic 57), Whaley, McDonald, Maric, Hoolahan, Martin (Dawkin 68), Dumic, Steer, Kelly, Dawkin, Brindley.
Subs not used: Steer (GK), Kelly.
Southend United: Joyce, Sankofa (c), Smith, O'Keefe, Whittaker, Clayton, Scannell (Milner 66), Sawyer (Dennis 71), Freedman (Kosovac 76), Subotic, Walker.
Subs not used: Bentley (GK), Crawford.
Referee: Mr. I. Cooper
Attendance: 921