HMS Nasturtium (1915)

HMS Nasturtium was an Arabis-class sloop built in Scotland and launched in 1915.

Design and construction
Nasturtium was one of 56 Arabis class sloops built for the Royal Navy during World War I. The sloops-of-war were intended for minesweeping duties in European waters.

Nasturtium had a displacement of 1,250 tons. She was 255 ft long between perpendiculars, 267 ft in length overall, had a beam of 33 ft, and a draught of 11 ft. The propulsion system consisted of two coal-fired cylindrical boilers supplying steam to a four-cylinder triple expansion engine, connected to a single propeller shaft. Maximum speed was 15 kn, and the ship could achieve a range of 2000 nmi. Up to 250 tons of coal could be carried.

Nasturtium was laid down for the Royal Navy by A. McMillan and Sons, Dumbarton, Scotland on 1 July 1915 with yard number 464. She was launched on 21 December 1915.

History
HMS Nasturtium was based at Malta. On 24 April 1916, she left Malta but was ordered to return immediately to search for a submarine in the vicinity. On 27 April the German submarine U-73 had laid down a minefield of 22 mines outside the Grand Harbour of Valletta. The battleship HMS Russell hit two of the mines and sank.

Nasturtium arrived in Malta on 27 April. The Rear Admiral of Patrols based at Fort Rinella ordered the sloop to search for mines and submarines. At 19:10 she ended up in the same minefield as the Russell and struck a mine which exploded 7 feet below the waterline on her starboard side close to the foremost funnel. Seven crew members were killed. Her boiler rooms began to flood and the tug Prompt was sent from Sliema to assist her. By 21:00, she had a heavy list and all the crew were evacuated, except for a few hands on the forecastle. By 21:38 the remaining crew abandoned the ship since she was now listing by 30 degrees to port. At 21:50 the naval yacht HMY Aegusa hit a mine in the same minefield and sank.

The Nasturtium finally sank at 02:45 on 28 April 1916. A court martial regarding her loss was held on board HMS Theseus on 8 May 1916. Her wreck now lies at a depth of 135 metres.