Italian gunboat Ermanno Carlotto
Ermanno Carlotto was a river gunboat of the Italian Regia Marina. After the Italian armistice of 1943 she served in the Imperial Japanese Navy as Narumi, while after the end of World War II she was used by the Navy of the Republic of China and then by the Navy of the People's Republic of China as Qian Kun.
History
Service in the ''Regia Marina''
Construction
In 1910, at the request of the Italian foreign ministry, the Regia Marina decided to build two river gunboats to be stationed in China, to protect the Italian communities along the Chinese rivers and in particular the upper Yangtze and the Hai, where Italian traders and entrepreneurs had built textile factories and managed commercial activities. Larger ships, in fact, could not go beyond Wusong and Hankou. Between March 1911 and November 1913 the gunboat was built in Italy, of a 1,000-ton displacement, which reached Shanghai in April 1914 after a four month trip.The second gunboat would be smaller than Sebastiano Caboto in order to be able to go upstream of the rivers more easily and safely, overcoming currents and shallows where Sebastiano Caboto had had problems. It was decided to order the construction at a Chinese shipyard. On the orders of the naval general staff the commander of the armored cruiser Marco Polo , based in China, enquired about the local shipyards, and the Shanghai Docks and Engineering Company shipyard was chosen for the construction. Once the shipyard was chosen, the new ship was immediately laid down: the construction took place according to the technical and operational specifications mandated by the Regia Marina and was supervised by an officer of the Tianjin detachment of the Regia Marina. The new ship was named after the sottotenente di vascello Ermanno Carlotto who fell during the Boxer Rebellion and was decorated with the Gold Medal of Military Valour.
The armaments of the gunboat would consist of two [Cannon 76/40 Model 1916|] L/40 naval guns, one forward of the pilothouse and one in the extreme aft part of the deck, and machine guns. The gunboat could reach a speed of. Her propulsion was provided by two Yarrow boilers which originally used coal and were subsequently converted to oil. The two propellers were placed in as many tunnels and thus protected so as not to be damaged by the rocks, while the hull was divided into various compartments. Besides the Italian crew, made up of personnel from the Regia Marina, Chinese civilians served on the boat as river pilots, cooks and interpreters.
Laid down in March 1914 the ship should have been completed in December, but construction went slowly, as other constructions were prioritized given the imminent outbreak of a world war. In 1915, following the Italian entry into World War I, the construction of Carlotto was suspended because of Chinese neutrality and was only resumed after the end of the war, with the boat being launched in 1918. The gunboat was commissioned in March 1921 and was immediately sent to the Hai river, where conflicts between two Chinese warlords were endangering foreign citizens. On that occasion Carlotto visited some Italian missions which had never been reached by Italian navy ships until then. Later the ship traveled several times on the upper and middle courses of the Yangtze. After returning to Shanghai, the ship went up the Han river, a tributary of the Yangtze River near Hankou, and then the Min river, also a tributary of the Yangtze. During these patrols the gunboat officers for the first time produced detailed nautical charts of these rivers, noting down hydrographic information, flood cycles, currents, shallows and other information needed to navigate the rivers.
Service in the 1920s and 1930s
In 1923 the gunboat Carlotto has successfully sailed upstream of the Yangtze for over 1,000 miles under the command of 1° tenente di vascello Alberto Da Zara of the Corps of Naval Engineering Felice Fantin, and the doctor, sottotenente di vascello : this voyage took the ship where no other unit had hitherto gone, reaching the altitude above than the starting one. The voyage was an idea of Da Zara, who had assumed command of the ship in September 1922 and held it until March 1924 after being promoted in 1923 to capitano di corvetta .In mid-February 1923 the gunboat went up the Yangtze River to Nanjing and Jiujiang, to prepare for the ascent, which was to take her beyond Yichang and Yibin, on the slopes of Tibet. Up to Yichang the Yangtze flowed widely meandering in the middle of a large alluvial plain, while beyond this locality it flowed in a turbulent stream in a very narrow rocky valley, characterized by the Three Gorges which are actually made up of ten large gorges, irregular riverbed, rugged banks, numerous obstacles both in the center of the stream and on the sides, which generated opposing currents and eddies, making the stream to reach a speed of. After planning the navigation and embarking the elderly and experienced Chinese pilot Tai Li, Carlotto left Yichang on 11 June 1923. After departing Yichang, more than a 1,000 miles from Shanghai, and meeting the first gorge, Carlotto had to face the first rapid, in a stretch of river characterized by large and sharp rocks that stretched out towards the center of the bed, producing eddies and countercurrents. In order to advance against the current, which flowed at, Carlotto had to increase the speed to. After an hour of sailing the gunboat encountered the Kung-Ling rapid, which had previously wrecked other ships, including the German paddle steamer SS Sui Hsiang , which was headed for Chongqing to be the first German vessel to reach it and foundered on the rocks on 28 December 1900.
After passing this rapid, on 12 June the ship encountered the Niu-Kan-Ma-Fei gorge, with rocky walls of more than a high that descended to the river bank and then the three-jump rapid of Hsing-T'an, made dangerous by the shallows and eddies that were created in both directions. Passing at low speed near Shin Men over dangerous rocks, Carlotto approached the rapid of Yeh-T'an, in length with the shape of an isosceles triangle, which also proved to be very difficult to negotiate for the previous ships that had tried to pass it. Da Zara sent all the crew to their posts and told the engine room to keep ready to develop the maximum speed, then maneuvered to approach the right bank, trying to avoid ending up in the countercurrent : the Italian gunboat, vibrating and rolling strongly due to the continuous eddies that formed at the bow and at the sides, and approaching continuously to keep to the edges of the counter-currents and in the center of the bed, overcame the rapid proceeding very slowly, concluding the maneuver in 22 minutes.
Later the ship faced the Dragon Rapid ) and the rapid of Hu-T'an, particularly turbulent and flanked, to the right and left, by sharp rocks stretching towards the center of the watercourse, reducing its width to less than a. Carlotto continued in a stretch where other river ships had previously been lost, and, without encountering further difficulties, reached Chongqing on 16 June 1923, from the mouth of the Yangtze and above the sea level, carrying the Italian flag in Chongqing for the first time. The ship, however, continued and on 25 June arrived in Yibin, where the Upper Yangtze began, and she stopped there briefly for some repair work, after which she entered the river Min. After another week of navigation, which had to be accomplished while sounding continuously the riverbed with bamboo canes, on 3 July 1923 Carlotto arrived in Jiading, from the mouth of the Yangtze and above the sea level, where she remained for two weeks.
The descent of the river, which is also not without difficulties, made Carlotto pass through Nanjing, Hankou and finally Shanghai. Sailing downstream Carlotto descended from Chongqing to the mouth of the gorges in less than two days, clocking at, then, in mid-November, she descended more slowly from Hankou to Shanghai alongside the Italian cruiser Libia . The Italian gunboat was the first ship to arrive at Chongqing from Shanghai, covering a total of almost in less than four months. At the end of the voyage, due to the efforts she had been subjected to, the transmission chain that connected the crankshaft to the propeller had lengthened by about 2m. The enterprise had great public resonance, and the Grand Admiral Paolo Thaon di Revel, Minister of the Navy, praised the commander Da Zara, the officers and all crew, especially the engineers. After staying in Shanghai for three months, Da Zara decided to take his leave by organizing a dance which was well attended by hundreds of Italians residing there.