The USS Becuna submarine sank 3,888 tons of shipping and earned four battle stars in World War II.

The Nautilus UC3 was the site of the death of journalist Kim Wall. Peter Madsen, who built the submarine, is accused of her murder. They were together on the submarine in August 2017 when it sank.

submarine hunter aircraft, helicopters, and reconnaissance planes. Each carrier's crew of over 3,000 could outnumber the ...