The A.I.M. sub fired a missile against the Maggia Gambling Ship, filling the connecting craft with water.
As Big M activated a gyro-oscillator that would have prevented A.I.M. agents getting off with the loot, the sub dispatched a shocky ray blast to damage the ship beyond saving. A vortex-suction beam was also activated to suck Iron Man right through the ship floor, delivering the golden avenger to the mother ship.
The sub cruised to a small island off the New England coast, where Iron Man was taken to Mordius' laboratory.