Action of 14 October 1918
| Action of 14 October 1918 | |||||||
|---|---|---|---|---|---|---|---|
| Part of World War I Atlantic U-boat Campaign | |||||||
| Portuguese Navy ship NRP Augusto de Castilho | |||||||
| 
 | |||||||
| Belligerents | |||||||
| Portugal | German Empire | ||||||
| Commanders and leaders | |||||||
| Carvalho Araújo † | Lothar von Arnauld de la Perière | ||||||
| Strength | |||||||
| 1 naval trawler 1 civilian steamer | 1 Submarine | ||||||
| Casualties and losses | |||||||
| Naval trawler sunk with 6 dead and several wounded | Submarine damaged, unknown human casualties | ||||||
The action of 14 October was a naval engagement of the First World War when the Imperial German Navy submarine SM U-139 attacked the Portuguese civilian steamer São Miguel and the Portuguese Navy naval trawler NRP Augusto de Castilho in the Atlantic Ocean on 14 October 1918.