HMS Perth

The Caledon Shipbuilding & Engineering Company built Perth as yard number 240. She was launched on 15 February 1915 and completed that July.[1]

Her dimensions were similar to those of Dundee, which Caledon had built for the Dundee, Perth & London Shipping Co in 1911.[2] Perth's registered length was 280.2 ft (85.4 m), her beam was 40.2 ft (12.3 m) and her depth was 17.7 ft (5.4 m). Her tonnages were 2,502 GRT and 1,418 NRT. She had a three-cylinder triple-expansion steam engine that was rated at 345 NHP,[3] which gave her a speed of 14 knots (26 km/h).[4]

The Dundee, Perth & London Shipping Co Ltd registered Perth in Dundee. Her UK official number was 123346 and her code letters were JLNW.[5]

The Admiralty requisitioned the ship from new and had her completed as an armed boarding steamer. She was armed with three 4.7 inch guns and commissioned into the Royal Navy as HMS Perth.[4]

Perth was in Royal Navy service by 25 October 1915. She was assigned to the East Indies Station. She left Dundee on 17 November, and sailed via Devonport, Gibraltar, Malta, Port Said, the Suez Canal and Aden to the island of Perim, where she arrived on 20 December. Perim is in the Bab-el-Mandeb, the strait between the Red Sea and Indian Ocean. Britain then used Perim as a coaling station and naval base. The Royal Navy assigned Perth to patrol in and around the Red Sea. She visited ports including Suez, Port Sudan, Kamaran, Jeddah, Aden, Berbera, Elaiya, Gizan, Mokha, Hodeida, Damo and Loheiya.[4]

The cruiser HMS Fox, which led the bombardment of Jeddah.

On 15 June 1916, Perth took part in a joint sea, air and land attack on the Ottoman Army garrison at Jeddah. Perth and the cruiser HMS Fox entered the inner harbour and bombarded the town walls.[4] A seaplane from HMS Engadine bombed Ottoman positions. The British bombardment supported Hejaz irregular forces, who had been attacking Jeddah since 10 June. The Ottoman garrison surrendered the next day. This cut off a supply route to the Ottoman garrison defending Mecca, which then fell to Hejaz irregulars on 4 July.[6]

For repairs and refitting, Perth paid two visits to the Royal Indian Navy dockyard in Bombay in British India. The first was in October and early November 1916, and the second was in November and December 1917.[4]

On 22 August 1918 Perth left Perim for the last time. She sailed via the Suez Canal, and Port Said to Alexandria, where she joined a convoy that went via Bizerta and Gibraltar to home waters. On 1 October the convoy was crossing the Bay of Biscay, on a zig-zag course to reduce the risk of attack. Perth was zig-zgging ahead of the convoy when she sighted the SM U-139. Perth's guns engaged the submarine at a range of 8,800–4,800 yards (8,000–4,400 m). U-139 returned fire, damaging Perth and killing her paymaster and a sub-lieutenant. The U-boat dived and torpedoed two cargo ships in the convoy: the British Bylands and Italian Manin. Perth rescued Bylands' crew, and inspected the abandoned Manin, and then buried her dead at sea.[4][6]

On 3 October Perth left the convoy for Milford Haven and then Pembroke Dock, where she arrived on 5 October to discharge cargo and be repaired. On 10 October she reached Avonmouth in England, where she exchanged her ammunition and bunkered. She returned to Milford Haven, where she left on 1 November escorting a convoy to Gibraltar, arriving on 7 November.[4]

Perth was still in Gibraltar when the Armistice of 11 November 1918 was signed. She left on 14 November, reached Plymouth in England on 17 November, and entered Devonport on 20 November.[4] In December 1918 she was returned to her owners.[1]

In the interwar period Perth fulfilled the rôle for which she had been designed: running a coastal cargo and passenger service between Dundee and ports on the east coast of England, usually Tilbury. She also made occasional voyages to Southend-on-Sea, Brighton, or the Netherlands. But passenger numbers declined, and by the late 1930s she was sailing only in the summer.[6]

By 1920 Perth was equipped for wireless telegraphy,[7] and by 1930 her call sign was GQXB.[8] She had an echo sounding device by 1934.[9]

In 1940 the Admiralty requisitioned her again, and she was converted into an ocean boarding vessel. During the war she served also as a convoy rescue ship,[10] for which her equipment included high-frequency direction finding. In the Battle of the Atlantic she sailed in more than 60 convoys and rescued 455 seafarers, making her one of the most successful convoy rescue ships of the war.[6]

In 1946 the Falkland Islands Company bought the ship and renamed her Lafonia. In 1950 Lloyd Mediterraneo SpA bought her, renamed her Valfiorita and registered her in Rome.[11] By 1959 she was equipped with wireless direction finding.[12]

In 1960 Carlo Lolli-Ghetti & C, SpA bought her and registered her in Venice or Ancona. She was scrapped in San Giorgio di Nogaro, with work starting on 5 November 1962.[1]

• SS Dundee, a similar Dundee, Perth & London Shipping Company coastal liner, which also served as an armed boarding steamer.