The vessel was named after a 'Leona Philpot' character in popular Xbox video game franchise 'Halo.'

"The bottom line is that in one day this thing was deployed, hooked up and running," Microsoft Research Next special projects leader Norm Whitaker said in a post at the company's website.

A diver went down monthly to check on the vessel, otherwise the research team remained in contact remotely. Data from the experiment was still being analyzed but preliminary results appear promising, according to Microsoft. The Natick mission is to build and operate an underwater datacenter.

With about half of the world's population living near large bodies of water and a shift to accessing software hosted in the Internet cloud, having datacenters submerged nearby could save money and speed up access to information, Microsoft reasoned.

Currents or tides can be tapped to generate electricity to power datacenters, and the cold depths provide natural cooling.

The next phase of Project Natick is being planned and may include a bigger vessel with 20 times the computing power than the original, which is back at the Microsoft headquarters in Redmond, Washington.