No.1 class submarine chaser

(left to right) No.1, No.2 and No.3 in 1938
Class overview
Name:	No.1 class submarine chasers • No.1 class • No.3 class
Builders:	Uraga Dock Company Tōkyō Ishikawajima Shipyard Asano Shipyard
Operators:	Imperial Japanese Navy
Succeeded by:	No.4 class
Cost:	1,525,700 JPY (No.1 class) 1,530,000 JPY (No.3 class)
Built:	1933 – 1936
In commission:	1934 – 1946
Planned:	3
Completed:	3
Lost:	1
Retired:	2
General characteristics No.1 class
Displacement:	266 long tons (270 t) standard 280 long tons (284 t) trial and after late 1934 377 long tons (383 t) trial
Length:	65.30 m (214 ft 3 in) overall 64.00 m (210 ft 0 in) waterline
Beam:	5.90 m (19 ft 4 in)
Draught:	1.43 m (4 ft 8 in)
Propulsion:	2 × Kampon Mk.22 Model 8 diesels 2 shafts, 3,400 bhp
Speed:	24.0 knots (27.6 mph; 44.4 km/h) and after late 1934 21.1 knots (24.3 mph; 39.1 km/h)
Range:	1,500 nmi (2,800 km) at 14 kn (16 mph; 26 km/h)
Complement:	65
Armament:	• 2 × 40 mm heavy machine guns • 36 × depth charges • 1 × depth charge thrower • 1 × Type 93 active sonar • 1 × MV hydrophone
General characteristics No.3 class
Displacement:	270 long tons (274 t) standard 285 long tons (290 t) trial
Length:	56.10 m (184 ft 1 in) overall 55.00 m (180 ft 5 in) waterline
Beam:	5.60 m (18 ft 4 in)
Draught:	2.10 m (6 ft 11 in)
Propulsion:	2 × Kampon Mk.22 Model 6 diesels 2 shafts, 2,500 bhp
Speed:	20.0 knots (23.0 mph; 37.0 km/h)
Range:	1,500 nmi (2,800 km) at 14 kn (16 mph; 26 km/h)
Complement:	60
Armament:	• 2 × 40 mm heavy machine guns • 36 × depth charges • 2 × Type 94 depth charge projectors • 1 × depth charge thrower • 1 × French SCAM active sonar • 1 × Type 93 hydrophone

The No.1 class submarine chaser (第一号型駆潜艇,, Dai 1 Gō-gata Kusentei^?) was a class of submarine chasers of the Imperial Japanese Navy (IJN), serving during World War II. 3 vessels were built in 1933-36 under the Maru 1 Programme and the Maru 2 Programme. They have two sub classes, this article handles them collectively.

Background

• In World War I, German U-boat raged. The IJN began maintenance of an anti-submarine boat as a lesson in this, because Japanese shoreline and sea-lanes were very long. The IJN had some submarine chaser type tugboats and yard ferries. However, they were small and their speed was low.
• The IJN wanted to give the anti-submarine boats a speed of more than 20 knots, because their Kaidai III submarine already achieved a 20kt surfaced.

Design

• The Naval Technical Department (Kampon) made draft shallow to give them high speed. They achieved 24 kt speed hereby.
• The No.1 and the No.2 were completed in March 1934, and they were assigned to the 1st Subchaser Division, Yokosuka Naval Defence Squadron.
• However, because of their very shallow draft they lacked the rolling performance. This fact become evident after the Tomozuru incident.
• The Tomozuru incident affected the No.1 class. The No.1 and the No.2 were sent to the Uraga Dock Company in July 1934, and repairs were started. They were equipped 80 tons ballast and mounted a ballast keel. The drawings for the No.3 type boats were also revised.

Service

• Late 1934, Repairs were completed.
• October 1936, The No.3 assigned to 1st SchDiv. They always shared an action afterward.
• In 1938, the 1st SchDiv was transferred to the No.1 Base Force (Shanghai).
• On 5 September 1941, the No.1 Base Force was transferred to the 2nd Fleet.
• In December 1941 – March 1942, the 1st SchDiv engaged to the Battle of the Philippines and Dutch East Indies campaign.
• On 10 March 1942, the 1st SchDiv was transferred to the No.21 Special Base Force (Surabaya), 2nd Southern Expeditionary Fleet, Southwest Area Fleet.
• On 1 May 1942: The 1st SchDiv was dissolved. They spent all their time for escort operations in the Java Area.

Ships in classes

No.1 class

• Project number was K3. 2 vessels were built under the Maru 1 Programme. They equipped the MV hydrophone by Submarine signal company and latest active sonar the Type 93.

Ship	Builder	Laid down	Launched	Completed	Fate
Royal Navy off Singapore on 11 July 1946. Decommissioned on 10 August 1946.
Lombok on 27 June 1945.

No.3 class

• Project number was K4. Only 1 vessel was built under the Maru 2 Programme. They equipped the Frech SCAM active sonar and latest hydrophone the Type 93. The No.3 was classed in the No.1 class in the IJN official documents.

Ship	Builder	Laid down	Launched	Completed	Fate
edit] Photos No.2 in 1934 No.3 in 1936 Footnotes ^ Submairne chaser No.1 (第1号駆潜艇, Dai 1 Gō Kusentei?). The same shall apply hereinafter. Bibliography Ships of the World special issue Vol.45, Escort Vessels of the Imperial Japanese Navy, "Kaijinsha". http://www.ships-net.co.jp/. , (Japan), February 1996 The Maru Special, Japanese Naval Vessels No.49, Japanese submarine chasers and patrol boats, "Ushio Shobō". http://www.kojinsha.co.jp/.  (Japan), March 1981 Wikimedia Foundation. 2010. Игры ⚽ Нужно сделать НИР? No.1 class patrol boat (1940) No. 20 Squadron IAF Look at other dictionaries: PC-461 class submarine chaser — Class overview Operators:  United States Navy …   Wikipedia No.4 class submarine chaser — No.8 in 1938 Class overview Name: No.4 class submarine chaser Builders …   Wikipedia No.13 class submarine chaser — No.13 class No.14 in March 1941 Class overview Name: No.13 class submarine chasers • No.13 class • No.28 class • No.60 …   Wikipedia Type 037 class submarine chaser — is also known as the Hainan class, designed by China to replace the Soviet S.O. 1 class submarine chaser. Early units had Dual Purposes Mk 26 76.2 mm guns and Russian RBU 1200 ASW rocket launchers, but eventually, these were replaced by Chinese… …   Wikipedia Haiqing class submarine chaser — Unlike western navies, the People s Liberation Army Navy does not have dedicated patrol boats / craft in its inventory, instead, a variety of naval vessels ranged from minesweepers to fast attack craft are deployed for patrol duties. 20 Haiqing… …   Wikipedia Kronshtadt class submarine chaser — The Kronshtadt class submarine chasers were a Soviet design built under license in China in the 1950s. The first Chinese built unit entered service in 1957 and was designated as the Type 6604 submarine chaser. ervice historyTwo boats of this… …   Wikipedia Haijiu class submarine chaser — 2 (possibly 2 more) Haijiu class submarine chasers are the modified versions of the Hainan class submarine chasers (Type 037) for the People s Liberation Army Navy. The main difference is that four ASW rocket launchers have replaced the original… …   Wikipedia Submarine chaser — USS PC 815, a US subchaser that served in World War II A submarine chaser is a small and fast naval vessel specially intended for anti submarine warfare. Although similar vessels were designed and used by many nations, this designation was most… …   Wikipedia No.251 class auxiliary submarine chaser — Auxiliary Submarine Chaser No.251 in 1938 Class overview Name: No.251 class aux. submarine chasers • No.251 class (Project number K5A) • No.253 class (Project number K5B) …   Wikipedia No.1 class auxiliary submarine chaser — No.1 class on 10 January 1945 Class overview Name: No.1 class auxiliary submarine chaser …   Wikipedia 18+ © Academic, 2000-2025 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”