Yo, this wasn't no ordinary ark. This is the GOPHER 3000 we're talking about! Built by the Nephilim giants in the Europa shipyards orbiting Jupiter, designed from Anunanki timelord blueprints, this was a fully submersible and spacious ark. It could fit every single species on the planet because, well you know, it was bigger on the inside! And each room on the ark came equipped with a holodeck to simulate each animal's natural environment (even virtual prey for the predators to kill and feed upon), so easy peasy! Too bad the Nephilim didn't get to hitch a ride, but Noah was ummm a racist; he didn't like their kind but he was more than happy to receive their free labor! The Anunanki installed a methane-oxygen separation system on the GOPHER 3000 and the methane was then routed to the engines for propulsion, and the ark came to rest at Mount Ararat, not due to water level, but because the GOPHER 3000 was equipped with trinary booster thrusters that allowed the ark to achieve aeronautic manuverability. Then, after Noah and his family exited the ark, Enoch piloted the GOPHER 3000 on a 200-year mission to repopulate the earth by flying it to locations all over the earth to deposit the various life forms, which were also tinkered with genetically during the year-long Flood to build up enough genetic variation to mask the fact that life has existed on this planet for only 6,000 years (to fool those dumb athiests in the distant future). So Mr. Sloth....no problemo dude...just leave it to Enoch :) He'll getcha home.