On Sunday December 6 around 14:30 hrs, the Susquehanna Hose Company was alerted for Rescue Box 570 South for two subjects in the water.  Chief 5, Chief 5-1, Chief 5-2, Rescue 551, Utility 571 with Marine 552 all went enroute within minutes.  Perry Point Marine 11 and Aberdeen Proving Ground Marine 12 also went enroute.  Units were advised there was one subject in the water with a lifevest on and another patient on the boat.  The vessel was apparently involved in a boating accident.  Chief 5-2 was first to arrive and had a visual of a boat with one subject in the water and one on the vessel.  Chief 5 arrived along with Marine 552 and established the command at Tydings Park.  Chief 5-2 maintained a visual on the vessel from the Bayou Apartments.  Ambulance 591 and 591 arrived and Chief 5 advised one medic to board Marine 552.  Within minutes of the original call, Marine 552 was launched and enroute to the vessel.  Marine 552 arrived on the scene and immediately pulled the subject from the water and began patient care while enroute back to Tydings Park.  The second subject also boarded Marine 552.  Command advised Medic 591 and 592 to relocate to the fuel pier to meet Marine 552 due to the fact in was much quicker and the subject was suffering traumatic injuries along with being in the cold water for 25 minutes.  Marine 552 arrived and was assisted by the crew of Rescue 551 with getting the patient from off the Marine unit to Medic 591.  The Medic unit immediately went enroute to Harford Memorial Hospital while the second subject was transported to Bayview Trauma by Medic 592.  The crew of Marine 552 and Medics 591-592 should be commended on their life saving efforts.  Marine 552 crew consisted of U571 operator Lt. Keith Beckley, Marine 552 operator Bay Wettig, Firefighters Jim Miller and Allen Dinnan.  Great job done by all.