The photo above is the 5'3" model made by Nathan Volle, and he's willing to take it to groups and events in the Chicago area. It might not be 100% accurate - since nobody took a photo while it was findable -- but the proportions are according to the description in Genesis.
Would you like to buy or build your own model ark? I checked Amazon, and as of 12/16/2014, only ONE of the Ark models you can buy there is partially realistic! That's a problem! The cute "Arks" seriously misrepresent the proportions of height/length/width, and the comparative sizes of Ark to people and animals. The silly versions leave thinking people with the idea that the story is a lie, because the misproportioned "Ark" obviously could not hold thousands of animals, plus 8 people, plus food for a year! If you have posters, murals, books, or toy "Arks" that misrepresent the facts, please point out the errors, or even get rid of them. Children begin evaluating the claims of the Bible at around age 10. "Cute" isn't cute when it helps destroy their faith.
Here are sources for some that are to-scale: