Apollo 9 was the third crewed Apollo flight and the first crewed flight to include the Lunar Module (LM). The crew was Commander James McDivitt, Command Module (CM) pilot David Scott, and LM pilot Russell Schweickart. The primary objective of the mission was to test all aspects of the Lunar Module in Earth orbit, including operation of the LM as an independent self-sufficient spacecraft and performance of docking and rendezvous manuevers. The goal was to simulate maneuvers which would be performed in actual lunar missions. Other concurrent objectives included overall checkout of launch vehicle and spacecraft systems, crew, and procedures. A multispectral photographic experiment was also performed.

Apollo 9 splashed down in the Atlantic Ocean on 13 March 1969 at 17:00:54 UT (12:00:54 p.m. EST) after a mission elapsed time of 241 hrs, 0 mins, 54 secs. The splashdown point was 23 deg 15 min N, 67 deg 56 min W, 180 miles east of Bahamas and within sight of the recovery ship USS Guadalcanal. The Apollo 9 Command Module "Gumdrop" is on display at the San Diego Aerospace Museum in San Diego, California.

References
http://nssdc.gsfc.nasa.gov/planetary/lunar/apollo8info.html