HMS Niger was a torpedo gunboat launched in 1892, converted to a minesweeper in 1909, and sunk in 1914 by the German submarine SM U-12 near Deal.

In 1902 she had a major refit at the Palmers Shipbuilding Company, where she was fitted with new and larger engines, and with Reed water tube boilers.

Niger was at anchor about two miles (3.2 km) off the pier at Deal when she was torpedoed and sunk before noon on 11 November 1914 by the German submarine SM U-12.

[7] Lieutenant-Commander Arthur Thomas Muir, who commanded the ship remained on the bridge until the rest of the crew had left.

[10][11] At the time of the sinking of Niger, Spicer-Simson was visiting his wife and some of her lady friends at a nearby hotel.