Christians, what is the current consensus on Noah's ark?

As an atheist and a scientist, I can accept that miracles such as walking on water, healing lepers, and raising Lazarus from the dead are plausible and not out of the realm of reality.

However, Noah's ark is scientifically a different story. This video pretty well sums up the scientific data regarding the ark. The video is was made from an atheist perspective, but it raised some good points. Some of those are here:

1. Geostratigraphy would be able to track precipitates (gypsum, halite, etc.) and microfauna/flora such as foraminifera/radiolarans from where waters evaporated. If a flood did occur, we'd have evidence of floodwaters all over the world in the same time unit of rock.

2. The amount of water on earth is essentially constant. The amount of water leaving or entering our atmosphere is negligible; the water just follows the water cycle (evaporation, condensation, precipitation, collection, etc.). It would require about 3X the amount of water currently on earth to flood up to Everest.

3. The dearth of oxygen near the top of the highest mountains is nearly unsurvivable.

4. The temperature near the top of the highest mountains is nearly unsurvivable

5. The integrity of wood as a building material would be insufficient for boats any bigger than 250-280 feet long. Any longer requires steel/iron, etc. That is not nearly enough room for food/water/every species on earth

6. For Noah to collect every species would require every species to live within walking distance of Noah's abode.

7. The rains lasted for 40 days, the ark apparently sailed for a year until the floodwaters retreated. An insurmountable amount of food would be required to feed elephants/tigers etc. for an entire year

8. Logistics of holding than many animals: animals getting along, animal feces, etc.

9. Many civilizations lived through the supposed time of the flood, and none wrote about a great flood.

I live in the deep south, and I don't want to start a fight/debate with my friends or family about the issue, but I legitimately want to know what christians currently think about the ark. Is it literally interpreted or figuratively? When did it happen? Did it really last for the whole year or were years interpreted differently?

EDIT: Thanks for the continued input. It seems so far that there is no consensus. The interpretation differs pretty vastly among denominations.