B747F LOSS OF ACFT CTL DURING INITIAL TKOF PROC. TKOF ABORTED; NEAR RWY EXCURSION.

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DURING FO TKOF ON WET RWY WITH VERY LIGHT ACFT (NO CARGO -- FUEL FOR 1.5 HR FLT) THE FO RELEASED THE BRAKES AND ADVANCED THE THROTTLES BEFORE #1 ENG WAS SPOOLED AND STABLE; CAUSING THE NOSEWHEEL TO SKID TO THE L WITH THE ACFT ACCELERATING. CORRECTION REQUIRED DIFFERENTIAL THRUST AND BRAKING WHICH RESULTED IN A SWERVE TO THE R BEFORE THE ACFT WAS BROUGHT UNDER CTL. I TAXIED THE ACFT CLR OF THE RWY AND THE A&P QUALIFIED FE AND A COMPANY A&P MECH WERE DISEMBARKED TO INSPECT THE ACFT (NO DAMAGE); PRIOR TO TAXIING BACK FOR AN UNEVENTFUL TKOF. FACTORS CONTRIBUTING TO THIS SIT INCLUDE: MY ACCEPTING THE TWR'S REQUEST TO PERFORM AN 'IMMEDIATE TKOF;' THE ACFT'S LIGHT WT; AND THE FO'S IMPROPER TKOF PROC IN WHICH HE WOULD PUSH FORWARD THE THROTTLES; MOVE HIS L HAND TO THE YOKE AND MOVE HIS R HAND TO THE NOSEWHEEL STEERING TILLER INSTEAD OF JUST USING RUDDER PEDAL NOSEWHEEL STEERING AS RECOMMENDED. BOTTOM LINE: IF I HAD SUPERVISED THE SIT PROPERLY; IT COULD PROBABLY HAVE BEEN AVOIDED. SUPPLEMENTAL INFO FROM ACN 359132: THE BEFORE TKOF CHKLIST WAS CALLED COMPLETE AND THE CAPT XFERRED ACFT CTL TO ME BY STATING; 'YOUR BRAKES; YOUR THROTTLES.' I ACKNOWLEDGED AND ADVANCED THE THRUST LEVERS TO SPOOL UP THE ENGS WHILE AWAITING TKOF CLRNC. THE TWR STATED; 'CLRED FOR IMMEDIATE TKOF; START YOUR ROLL NOW.' SIMULTANEOUSLY; THE FE CALLED STABLE PWR; I RELEASED THE BRAKES AND INFORMED TWR WE WERE ROLLING. I ADVANCED THE THRUST LEVERS AND ASKED FOR NORMAL THRUST. I DETECTED A DRIFT TO THE L AND APPLIED R RUDDER. THE ACFT DID NOT CORRECT IMMEDIATELY AND DRIFTED FURTHER L OF CTRLINE. I APPLIED R TILLER AND FULL FORWARD YOKE BUT THE ACFT CONTINUED L. I ADVISED THE CAPT THAT I HAD FULL CORRECTION APPLIED BUT THE ACFT WAS NOT RESPONDING. HE RETARDED THE THRUST LEVERS TO REJECT THE TKOF. MAINT INSPECTED THE ACFT AND NOTED NO DAMAGE. ON DEP; WE NOTICED SKID MARKS ON THE RWY AND IT APPEARED THE R MAIN GEAR HAD TRACKED PAST THE RWY SIDE MARKINGS; POSSIBLY DAMAGING A RWY LIGHT. WE DISCUSSED THE EVENT WITH THE EXTRA CAPT RIDING JUMP SEAT AND HE NOTED THAT THE EPR'S WERE NORMAL; BUT THAT #1 N1 LAGGED THE OTHER ENGS.