British K-class submarine

The K-class submarines were a class of steam-propelled submarines of the Royal Navy designed in 1913. Intended as large, fast vessels with the endurance and speed to operate with the  battle fleet, they gained notoriety and the nickname of "Kalamity class", for being involved in many accidents. Of the 18 built, none was lost through enemy action but six sank in accidents. Only one ever engaged an enemy vessel, hitting a U-boat amidships though the torpedo failed to explode.