Apollo 11 climbs toward orbit after liftoff on July 16, 1969. In 2 1/2 minutes of powered flight, the S-IC booster lifts the vehicle to an altitude of about 39 miles, some 55 miles downrange. NASA hide caption toggle caption NASA The Two-Way We Have Liftoff: Apollo Rocket Engines Pulled From Ocean Floor March 20, 2013 Some of the most powerful U.S. rocket engines ever built have been raised from the depths off Florida. The Apollo-era motors are to be restored and put on display. Meanwhile, NASA has pulled unused copies of the same engine out of storage and fired them up as part of its program to build new heavy lift rockets.