Paul Allen co-founded Microsoft alongside Bill Gates. He has been estimated to have been the 46th richest person in the world, and has a knack for underwater exploration. He owns the RV Petrel, a research vessel outfitted with deep sea equipment that is more capable than ever — it is the only ship equipped to explore depths reaching 19,685 ft underwater. The RV Petrel has discovered the USS Indianapolis, the USS Ward, the USS Lexington and several other wrecks from the Battle of Ormoc Bay and the Battle of Surigao Strait, as well as several other shipwrecks around the world.

On St. Patrick’s day, it made its latest discovery: the USS Juneau. The ship had been sunk in WWII, and it lay 2.6 miles under the surface of the water near the Solomon Islands. They were able to identify the Navy vessel using underwater cameras, and you can see the discovery here:

The USS Juneau was sunk on Nov. 13, 1942 at the battle of Guadalcanal. On the ship served five brothers — George, Frank, Joe, Matt and Al Sullivan all enlisted in the Navy together after Pearl Harbor (two of them had previous served), and all were assigned to the same light cruiser. They ranged in age from 20 to 27, and hailed from Waterloo, Iowa.