https://divingalmanac.com/first-operational-wooden-submarine/ First published in 2007, the Diving Almanac celebrates the achievements of a unique group of people that share a passion for underwater adventure and discovery. It is the ultimate authority on diving exploits, history and personalities. Wed, 01 Nov 2017 03:22:47 +0000 hourly 1 https://wordpress.org/?v=5.2.2