Augusto De Castilho
| Name | Augusto De Castilho |
| Type | Navy Trawler |
| GRT | 487 tons |
| Country |  Portuguese |
| Built | 1909 |
| Builder | Cochrane & Sons, Selby |
| Operator | Portuguese Navy |
| History | Peace-time operator: Parceria Geral de Pescarias (Bensaude & Co.), Lisbon |
U-boat attacks on Navy Trawler Augusto De Castilho
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 14 Oct 1918 | U 139 (Lothar von Arnauld de la Perière) | Sunk | Sunk by gunnery 100 miles SE of the Azores. Source of location: Inso, Jaime, "A Marinha Portuguesa na Grande Guerra", "Anais do Club Militar Naval", 67º Ano, Novembro e Dezembro, Lisboa, 1937, p. 993 | 35° 35'N, 22° 10'W | Madeira – Azores | ||
| While escorting the steamer San Miguel. | ||||||||
Position of attack on Augusto De Castilho
If you can help us with any additional information on this vessel then please contact us.