SM U-20

Related time notes

1. Acacia Class: Batch 1 of World War I's Flower Class - Key Ships Series 7, Ship 21 Dec 2023
   23:47Hesperian links salvage work to submarine diplomacyNotable Point
2. The Submarine Century? How Submarines evolved over the 20th Century8 Mar 2023
   47:37Why German UC II minelayers mattered in the First World WarChapter