Documents submitted to the Port of San Francisco have revealed new information and fantastic images of what the mystery Google barge will be.

The barge in San Francisco Bay will be an "unprecedented artistic structure" that will be surrounded by gigantic sails, according to the San Francisco Chronicle, which was the first to obtain the port's documents for the floating edifice. The documents come from By And Large, the company associated with Google that is handling the construction of the barge.

The finished barge will be 50 feet tall and 250 feet long. Its sails will be “reminiscent of fish fins, which will remind visitors that they are on a seaworthy vessel.” During bad weather the barge will lower its sails, and at other times the sails will provide guests with shade.

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The images in the documents show the exterior and parts of the barge's interior. The images are renderings that depict the final plans for the structure. They were put together by architectural firms Gensler and LOT-EK.

“We believe this curious and visually stunning structure will be a welcome addition to the waterfront, an experience unlike any other,” By And Large said, according to the report. 

The barge will travel around San Francisco Bay and other parts of the West Coast, moving from location to location every month and is expected to receive 1,000 visitors per day, the report said.

Google confirmed its association with the mystery barge earlier this week, saying the structure will be used as an "interactive space." But, aside form the vague statement, the company did not give much information.

The documents obtained this week give a few more clues, but still manage to keep the purpose of the barge unclear.

“We envisioned this space with community in mind,” By and Large told the Chronicle, “a surprising environment that is accessible to all and inspires conversation about how everything is connected -- shorebirds, me, you, the sea, the fog and much more."

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