Hu Oah at anchor, c. 1907–47, location unknown
Class overview
Name	Hu Peng class
Builders	Kawasaki Dockyard Company, Ltd., Kobe, Empire of Japan
Operators	Imperial Chinese Navy   Republic of China Navy   Royal Thai Navy   Imperial Japanese Navy Republic of China-Nanjing Navy
Preceded by	Lieh class ( ICN) HTMS Moradoph ( RTN)
Succeeded by	Type 02 class ( PLAN) Trad class ( RTN)
Subclasses	Number 1-class
Cost	¥380,000
Built	1906–1912
In service	1906-1947
Planned	8
Completed	8
Lost	4
Retired	4
General characteristics
Type	Torpedo boat
Displacement	89 long tons (90 t)-97 long tons (99 t) (standard) 100 long tons (102 t)-120 long tons (122 t) (full load)
Length	41.1 m (134 ft 10 in) o/a
Beam	4.9 m (16 ft 1 in)
Draught	2.1 m (6 ft 11 in)
Propulsion	1 shaft, 1 VTE engine, 2-Kampon boilers, 1,200 bhp (900 kW)
Speed	23 knots (26 mph; 43 km/h)
Complement	24-34
Armament	Hu Peng: 2 × 47 mm (2 in)/40 (2 × 1) 1 × 6.5 mm (0 in)/115 (1 × 1) 3 × 450 mm (18 in) torpedo tubes (3 × 1) Number 1: 1 × 57 mm (2 in)/40 (1 × 1) 1 × 47 mm (2 in)/40 (1 × 1) 2 × 450 mm (18 in) torpedo tubes (2 × 1)

The Hu Peng-class ( Chinese: 湖鵬; pinyin: Húpéng), also known as the Hu-class, Type N-class and Number 1-class ( Thai: หมายเลข 1) was a class of torpedo boat built initially for the Qing Imperial Chinese Navy from 1906 to 1907. The ships would eventually pass to the Republic of China Navy and would serve during the National Protection War, World War I, the Second Zhili–Fengtian War, Northern Expedition and Second Sino-Japanese War. A near identical, semi-sister class of torpedo boats were built for the Royal Thai Navy from 1907 to 1912.

After most of the Imperial Chinese Navy was destroyed in the First Sino-Japanese War, the Qing government embarked on an international campaign to obtain a loan to rebuild China's navy. After spending two year in Europe and North America, Marquess Suyi, Li Hongzhang returned to China with orders for two cruisers from the United Kingdom and three cruisers and four destroyers from Germany. To supplement this naval rearmament, private donations were made for the purchase of new warships. One such purchase was made by the Governor-General of Hubei, Zhang Zhidong (mistranslated in some sources as 'Vice Admiral Hu Peh', from his title) for four torpedo boats from Japan. ^[1] The four ships had both numbers and names. These were to be named Torpedo boat No.7/Hu Peng ( Chinese: 湖鵬; pinyin: Húpéng; lit. 'Lake Peng'), Torpedo boat No.8/Hu Oah (or in some sources Hu Ngo) ( Chinese: 湖鶚; pinyin: Húè; lit. 'Lake Osprey'), Torpedo boat No.9/Hu Ying ( Chinese: 湖鷹; pinyin: Húyīng; lit. 'Lake Hawk') and Torpedo boat No.10/Hu Chung ( Chinese: 湖隼; pinyin: Húsǔn; lit. 'Lake Falcon'). All ships spelled with the Chinese character 湖 ( pinyin: Hú), a nod to his Governor-Generalship of Hubei ( Chinese: 湖北; pinyin: Húběi) which also contains the same character. ^[2]

In 1907, Prince Paribatra Sukhumbandhu, ordered a destroyer based on the Harusame-class destroyer, HTMS Thayanchon ( Thai: เรือหลวงทยานชล), and three Normand-type torpedo boats from Kawasaki for the Royal Thai Navy, but with oil-fired boilers rather than coal-fired. The initial ships were named numerically, as the Number 1 ( Thai: หมายเลข 1), Number 2 ( Thai: หมายเลข 2), and Number 3 ( Thai: หมายเลข 3). In 1910, under the new King Rama VI, Prince Paribatra's began a 16-year plan to strengthen the Siamese Navy, starting with ordering a fourth torpedo boat, from Kawasaki to be named Number 4 ( Thai: หมายเลข 4) in 1911 along with another destroyer based off the Harusame-class. ^{[Pike 1]}

The Hu Peng-class ships were based on the Kawasaki Dockyard Company, Ltd. experience building the Hayabusa-class torpedo boats between 1903 and 1904. The ships were built on a French steel-hull Normand-type and designed for coastal service with a low freeboard. The ships were 41.1 m (134 ft 10 in) long overall, and with a draught of 2.1 m (6 ft 11 in). This shallow draught allowed the torpedo boats to operate on deep rivers such as the Yangtze as well as coastal operations. The ships initial armament were two single Japanese license-built 2½ Pounder Yamanouchi Mk I guns, fore and aft. The torpedo armament consisted of three single 450 mm (18 in) torpedo tubes; two single, above-water, centre-line torpedo launchers and one fixed, underwater torpedo tube at the bow. The ships were propelled by a singles shaft propeller, with one VTE engine, powered by 2-Kampon boilers, making a total of 1,200 bhp (900 kW) with a top speed of 23 knots (26 mph; 43 km/h). The ship could carry 28 long tons (28 t) of coal. ^[3]

The Thai Number 1-subclass, while physically identical in dimensions to the Hu Peng ships, but carried 19 long tons (19 t) of oil instead of coal, lightening the total displacement by roughly 10 long tons (10 t). The other difference was in armament, with one 47mm QF 3-pounder Hotchkiss gun being replaced by a 57mm QF 6-pounder Hotchkiss gun. The bow mounted torpedo tube was removed and the two single 450 mm (18 in) centre-line launchers were retained. Like the Hu Peng-class, the Siamese ships were designed for coastal and riverine use, such as the Mekong. ^[4]

• Hayabusa-class torpedo boat

• Gardiner, Robert (1986). Conway's All the World Fighting Ships: 1906-1921. London, UK: Conway Maritime Press. ISBN  978-0-8517-7245-5.
• Wright, Richard (2000). The Chinese Steam Navy: 1862-1945. London, UK: Chatham Publishing. ISBN  978-1-8617-6144-6.