No.1 class auxiliary submarine chaser

The was a class of submarine chasers of the Imperial Japanese Navy

Imperial Japanese Navy

The Imperial Japanese Navy was the navy of the Empire of Japan from 1869 until 1947, when it was dissolved following Japan's constitutional renunciation of the use of force as a means of settling international disputes...

(IJN), serving during World War II

World War II

World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

. 200 vessels were built under the Maru Kyū Programme

Rapid Naval Armaments Supplement Programme (Japan, 1941)

The was one of the armaments expansion plan of the Imperial Japanese Navy .-Background:In August 1941, the IJN started building warships for war...

(Ship # 500–599) and the Maru Sen Programme

Wartime Naval Armaments Supplement Programme (Japan, 1944)

The was the final armaments expansion plan of the Imperial Japanese Navy .-Background:Early 1944, the IJN started building warships for war. The plan did not include any large warships which were suitable for offensive operations.-Table of vessels:...

(Ship # 2001–2100).

Background

In 1939, the IJN wanted the point-defence subcahser for defence of their naval bases. In 1940, they built small prototype submarine chasers (No.1182 and No.1183) from a standard wooden fishing boat.
The IJN made a try of them, and they confirmed that it was effective subchaser. In 1941, the IJN ordered 100 vessels.
In the wartime, their performance were good. However, they were always troubled by insect damage, because their hull was wood.
They who survived war played an active part for minesweeping of magnetic mines.

Ships in class

Maru Kyū Programme

Rapid Naval Armaments Supplement Programme (Japan, 1941)

The was one of the armaments expansion plan of the Imperial Japanese Navy .-Background:In August 1941, the IJN started building warships for war...

vessels. (Ship # 500–599)

Aux. Submarine Chaser No.1, completed on 27 March 1943, survived war. Transferred to Japan Maritime Safety Agency and renamed Chidori (PB-18) on 1 May 1948.
Aux. Submarine Chaser No.2, completed on 15 March 1943, sunk by HMS Tally-Ho
HMS Tally-Ho (P317)
HMS Tally-Ho was a British submarine of the third group of the T class. She was built as P317 by Vickers Armstrong, Barrow, and John Brown & Company, Clydebank, and launched on 23 December 1942. So far she has been the only ship of the Royal Navy to bear the name Tally-Ho, probably after Tally-ho,...

on 6 October 1944.
Aux. Submarine Chaser No.3, completed on 4 April 1943, survived war.
Aux. Submarine Chaser No.4, completed on 18 April 1943, survived war. Transferred to Japan Maritime Safety Agency and renamed Kiji (PB-20) on 1 May 1948.
Aux. Submarine Chaser No.5, completed on 26 February 1943, sunk by USS Nicholas
USS Nicholas (DD-449)
USS Nicholas was a Fletcher-class destroyer of the United States Navy, which served through most of World War II, and for 27 years and two more wars after. She was the second Navy ship to be named for Major Samuel Nicholas....

on 18 August 1943.
Aux. Submarine Chaser No.6, completed on 12 March 1943, sunk by USN submarine on 7 July 1944.
Aux. Submarine Chaser No.7, completed on 12 March 1943, survived war.
Aux. Submarine Chaser No.8, completed on 17 April 1943, struck a naval mine and sunk on 9 September 1944.
Aux. Submarine Chaser No.9, completed on 10 May 1943, struck a naval mine and sunk on 9 September 1944.
Aux. Submarine Chaser No.10, completed on 9 April 1943, sunk in action on 18 March 1944.

Aux. Submarine Chaser No.11, completed on 12 March 1943, survived war. Sold to steamship company on 27 April 1948.
Aux. Submarine Chaser No.12, completed on 6 April 1943, sunk by USS Nicholas on 18 August 1943.
Aux. Submarine Chaser No.13, completed on 12 March 1943, heavily damaged in action on 1 November 1943, later scuttled.
Aux. Submarine Chaser No.14, completed on 8 May 1943, sunk in action on 30 January 1944.
Aux. Submarine Chaser No.15, completed on 6 March 1943, sunk in action on 22 October 1944.
Aux. Submarine Chaser No.16, completed on 10 May 1943, sunk in action on 16 February 1944.
Aux. Submarine Chaser No.17, completed on 10 May 1943, sunk in action on 18 February 1944.
Aux. Submarine Chaser No.18, completed on 30 April 1943, sunk in action on 30 January 1944.
Aux. Submarine Chaser No.19, completed on 24 April 1943, sunk in action on 30 January 1944.
Aux. Submarine Chaser No.20, completed on 15 April 1943, survived war.

Aux. Submarine Chaser No.21, completed on 5 May 1943, sunk in action on 30 January 1944.
Aux. Submarine Chaser No.22, completed on 20 June 1943, sunk in action on 30 March 1944.
Aux. Submarine Chaser No.23, completed on 5 June 1943, sunk in action on 9 July 1944.
Aux. Submarine Chaser No.24, completed on 8 July 1943, survived war.
Aux. Submarine Chaser No.25, completed on 14 May 1943, sunk in action on 31 January 1944.
Aux. Submarine Chaser No.26, completed on 1 June 1943, sunk in action on 30 March 1944.
Aux. Submarine Chaser No.27, completed on 10 July 1943, survived war. Transferred to Japan Maritime Safety Agency and renamed Tsubame (PB-23) on 1 May 1948.
Aux. Submarine Chaser No.28, completed on 26 May 1943, sunk in action on 30 January 1944.
Aux. Submarine Chaser No.29, completed on 5 August 1943, sunk in action on 22 February 1944.
Aux. Submarine Chaser No.30, completed on 10 July 1943, sunk in action on 4 November 1943.

Aux. Submarine Chaser No.31, completed on 10 June 1943, sunk in action on 16 October 1943.
Aux. Submarine Chaser No.32, completed on 15 June 1943, sunk in action on 24 September 1944.
Aux. Submarine Chaser No.33, completed on 21 May 1943, sunk in action on 31 January 1944.
Aux. Submarine Chaser No.34, completed on 14 August 1943, sunk in action on 19 February 1944.
Aux. Submarine Chaser No.35, completed on 17 August 1943, survived war.
Aux. Submarine Chaser No.36, completed on 5 August 1943, survived war.
Aux. Submarine Chaser No.37, completed on 5 August 1943, sunk by USS Lizardfish
USS Lizardfish (SS-373)
USS Lizardfish , a Balao-class submarine, was a ship of the United States Navy named for the lizardfish, a slender marine fish having a scaly lizardlike head and large mouth....

on 5 July 1945.
Aux. Submarine Chaser No.38, completed on 28 June 1943, sunk in action on 30 April 1944.
Aux. Submarine Chaser No.39, completed on 24 July 1943, sunk in action on 21 September 1944.
Aux. Submarine Chaser No.40, completed on 20 August 1943, sunk in action on 22 January 1944.

Aux. Submarine Chaser No.41, completed on 15 July 1943, survived war.
Aux. Submarine Chaser No.42, completed on 27 August, sunk by USS Hardhead
USS Hardhead (SS-365)
USS Hardhead , a Balao-class submarine, was a ship of the United States Navy named for the hardhead, a fish of the croaker family. Hardhead received six battle stars for World War II service. All six of her combat patrols were "successful"....

on 23 June 1945.
Aux. Submarine Chaser No.43, completed on 24 August 1943, converted tugboat and renamed No.1648 on 15 February 1944, survived war.
Aux. Submarine Chaser No.44, completed on 15 September 1943, converted tugboat and renamed No.1649 on 15 February 1944, survived war.
Aux. Submarine Chaser No.45, completed on 15 July 1943, survived war.
Aux. Submarine Chaser No.46, completed on 20 July 1943, sunk in action on 4 April 1944.
Aux. Submarine Chaser No.47, completed on 22 September 1943, sunk in action on 20 March 1944.
Aux. Submarine Chaser No.48, completed on 30 September 1943, sunk in action on 21 February 1944.
Aux. Submarine Chaser No.49, completed on 20 October 1943, survived war.
Aux. Submarine Chaser No.50, completed on 9 August 1943, sunk by USS Bluefish
USS Bluefish (SS-222)
, a Gato-class submarine, was the second ship of the United States Navy to be named for the bluefish, a fish of the Atlantic coast of the United States....

on 9 July 1945.

Aux. Submarine Chaser No.51, completed on 4 August 1943, sunk in action on 13 June 1944.
Aux. Submarine Chaser No.52, completed on 19 October 1943, sunk in action on 25 October 1944.
Aux. Submarine Chaser No.53, completed on 5 October 1943, sunk in action on 30 March 1944.
Aux. Submarine Chaser No.54, completed on 5 October 1943, sunk in action on 17 June 1944.
Aux. Submarine Chaser No.55, completed on 15 November 1943, survived war.
Aux. Submarine Chaser No.56, completed on 15 October 1943, sunk in action on 17 June 1944.
Aux. Submarine Chaser No.57, completed on 30 October 1943, survived war. Transferred to Japan Maritime Safety Agency and renamed Kawasemi (PB-21) on 1 May 1948.
Aux. Submarine Chaser No.58, completed on 16 November 1943, survived war. Transferred to Japan Maritime Safety Agency and renamed Uzura (PB-32) on 1 May 1948.
Aux. Submarine Chaser No.59, completed on 28 August 1943, sunk in action in June 1945.
Aux. Submarine Chaser No.60, completed on 18 October 1943, survived war.

Aux. Submarine Chaser No.61, completed on 11 September 1943, survived war.
Aux. Submarine Chaser No.62, completed on 27 August 1943, sunk in action on 20 March 1944.
Aux. Submarine Chaser No.63, completed on 25 December 1943, lost in an accident on 10 June 1945.
Aux. Submarine Chaser No.64, completed on 20 November 1943, sunk in action on 6 January 1945.
Aux. Submarine Chaser No.65, completed on 4 December 1943, survived war. Sold to Aomori Prefecture
Aomori Prefecture
is a prefecture of Japan located in the Tōhoku Region. The capital is the city of Aomori.- History :Until the Meiji Restoration, the area of Aomori prefecture was known as Mutsu Province....

on 21 April 1948.
Aux. Submarine Chaser No.66, completed on 24 October 1943, sunk in action on 7 August 1945.
Aux. Submarine Chaser No.67, completed on 27 December 1943, survived war.
Aux. Submarine Chaser No.68, completed on 9 December 1943, survived war.
Aux. Submarine Chaser No.69, completed on 30 December 1943, survived war.
Aux. Submarine Chaser No.70, completed on 30 September 1943, survived war.

Aux. Submarine Chaser No.71, completed on 30 October 1943, survived war. Transferred to Japan Maritime Safety Agency and renamed Hōjiro (PB-39) on 1 May 1948.
Aux. Submarine Chaser No.72, completed on 20 December 1943, survived war. Transferred to Japan Maritime Safety Agency and renamed MS 07 on 1 May 1948.
Aux. Submarine Chaser No.73, completed on 22 December 1943, sunk by USS Bearss
USS Bearss (DD-654)
USS Bearss was a Fletcher-class destroyer of the United States Navy, named for Brigadier General Hiram I. Bearss , USMC, who was awarded the Medal of Honor during the Philippine-American War....

on 26 June 1945.
Aux. Submarine Chaser No.74, completed on 17 November 1943, survived war.
Aux. Submarine Chaser No.75, completed on 8 February 1944, survived war.
Aux. Submarine Chaser No.76, completed on 1 January 1944, sunk in action on 11 December 1944.
Aux. Submarine Chaser No.77, completed on 20 December 1943, sunk in action on 28 August 1944.
Aux. Submarine Chaser No.78, completed on 15 October 1943, survived war. Transferred to Japan Maritime Safety Agency and renamed Ōtori (PB-28) on 1 May 1948.
Aux. Submarine Chaser No.79, completed on 26 February 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed MS 08 on 1 May 1948.
Aux. Submarine Chaser No.80, completed on 15 December 1943, survived war. Transferred to Japan Maritime Safety Agency and renamed Sekirei (PB-08) on 1 May 1948.

Aux. Submarine Chaser No.81, completed on 11 January 1944, survived war.
Aux. Submarine Chaser No.82, completed on 22 December 1943, sunk in action on 22 October 1944.
Aux. Submarine Chaser No.83, completed on 22 December 1943, survived war.
Aux. Submarine Chaser No.84, completed on 19 January 1944, sunk in action on 12 November 1944.
Aux. Submarine Chaser No.85, completed on 23 March 1944, sunk in action on 8 July 1945.
Aux. Submarine Chaser No.86, completed on 20 December 1943, survived war. Transferred to Japan Maritime Safety Agency and renamed MS 09 on 1 May 1948.
Aux. Submarine Chaser No.87, completed on 13 February 1944, sunk in action on 12 October 1944.
Aux. Submarine Chaser No.88, completed on 25 February 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed MS 10 on 1 May 1948.
Aux. Submarine Chaser No.89, completed on 5 November 1943, survived war. Sold to Ministry of Education on 29 May 1948.
Aux. Submarine Chaser No.90, completed on 12 February 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed MS 11 on 1 May 1948.

Aux. Submarine Chaser No.91, completed on 13 March 1944, sunk in action on 25 January 1945.
Aux. Submarine Chaser No.92, completed on 27 January 1944, lost in an accident on 4 October 1944.
Aux. Submarine Chaser No.93, completed on 1 March 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed MS 12 on 1 May 1948.
Aux. Submarine Chaser No.94, completed on 9 March 1944, sunk by rough weather on 23 September 1944.
Aux. Submarine Chaser No.95, completed on 29 March 1944, sunk in action on 18 October 1944.
Aux. Submarine Chaser No.96, completed on 10 March 1944, survived war.
Aux. Submarine Chaser No.97, completed on 10 February 1944, sunk by USS Sennet
USS Sennet (SS-408)
USS Sennet , a Balao-class submarine, was a ship of the United States Navy named for the sennet, a barracuda.Sennet was laid down on 8 March 1944 by the Portsmouth Navy Yard in Kittery, Maine; launched on 6 June 1944, sponsored by Mrs. Roscoe W. Downs; and commissioned on 22 August 1944, Commander...

on 19 April 1945.
Aux. Submarine Chaser No.98, completed on 20 February 1944, sunk in action on 24 July 1945.
Aux. Submarine Chaser No.99, completed on 11 March 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed MS 13 on 1 May 1948.
Aux. Submarine Chaser No.100, completed on 10 February 1944, survived war.

Maru Sen Programme

Wartime Naval Armaments Supplement Programme (Japan, 1944)

vessels. (Ship # 2001–2100)

Aux. Submarine Chaser No.151, completed on 14 March 1944, aground by rough weather on 15 April 1945, later scutlled.
Aux. Submarine Chaser No.152, completed on 10 February 1944, missing in action in end of 1944.
Aux. Submarine Chaser No.153, completed on 19 April 1944, struck a naval mine and sunk in shallow water on 6 July 1945.
Aux. Submarine Chaser No.154, completed on 24 April 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed Uguisu (PB-06) on 1 May 1948.
Aux. Submarine Chaser No.155, completed on 25 April 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed Shigi (PB-26) on 1 May 1948.
Aux. Submarine Chaser No.156, completed on 31 March 1944, sunk in action on 29 March 1945.
Aux. Submarine Chaser No.157, completed on 20 April 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed Aosagi (PB-37) on 1 August 1948.
Aux. Submarine Chaser No.158, completed on 24 April 1944, survived war. Sold to Ministry of Education on 25 May 1948.
Aux. Submarine Chaser No.159, completed on 17 May 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed Hinazuru (PB-38) on 1 August 1948.
Aux. Submarine Chaser No.160, completed on 3 May 1944, survived war.

Aux. Submarine Chaser No.161, completed on 3 July 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed Kotaka (PB-24) on 1 May 1948.
Aux. Submarine Chaser No.162, completed on 26 May 1944, survived war. Sold to fishery company on 5 May 1948.
Aux. Submarine Chaser No.163, completed on 23 June 1944, heavily damaged in action on 4 January 1945, later scuttled.
Aux. Submarine Chaser No.164, completed on 22 June 1944, survived war. Sold to steamship company on 5 May 1948.
Aux. Submarine Chaser No.165, completed on 25 April 1944, survived war.
Aux. Submarine Chaser No.166, completed on 10 June 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed Hato (PB-17) on 1 May 1948.
Aux. Submarine Chaser No.167, completed on 13 June 1944, struck a naval mine and sunk on 15 August 1945.
Aux. Submarine Chaser No.168, completed on 6 July 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed MS 57 on 1 May 1948.
Aux. Submarine Chaser No.169, completed on 31 May 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed Yamasemi (PB-11) on 1 May 1948.
Aux. Submarine Chaser No.170, completed on 5 May 1944, survived war. (in apraxia)

Aux. Submarine Chaser No.171, completed on 11 May 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed MS 01 on 1 May 1948.
Aux. Submarine Chaser No.172, completed on 15 June 1944, struck a naval mine and sunk on 26 May 1945.
Aux. Submarine Chaser No.173, completed on 30 May 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed Shirataka (PB-40) on 1 August 1948.
Aux. Submarine Chaser No.174, completed on 22 June 1944, survived war.
Aux. Submarine Chaser No.175, completed on 9 August 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed Kasasagi (PB-01) on 1 May 1948.
Aux. Submarine Chaser No.176, completed on 9 August 1944, sunk in action on 4 January 1945.
Aux. Submarine Chaser No.177, completed on 18 May 1944, survived war.
Aux. Submarine Chaser No.178, completed on 7 July 1944, survived war.
Aux. Submarine Chaser No.179, completed on 30 May 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed Yamagara (PB-41) on 1 August 1948.
Aux. Submarine Chaser No.180, completed on 17 July 1944, survived war.

Aux. Submarine Chaser No.181, completed on 15 June 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed Hibari (PB-16) on 1 May 1948.
Aux. Submarine Chaser No.182, completed on 3 July 1944, survived war. (in apraxia)
Aux. Submarine Chaser No.183, completed on 3 July 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed Benizuru (PB-12) on 1 May 1948.
Aux. Submarine Chaser No.184, completed on 14 July 1944, survived war.
Aux. Submarine Chaser No.185, completed on 3 September 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed Hayabusa (PB-19) on 1 May 1948.
Aux. Submarine Chaser No.186, completed on 4 September 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed Hatsukari (PB-13) on 1 May 1948.
Aux. Submarine Chaser No.187, completed on 3 June 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed Yamadori (PB-04) on 1 May 1948.
Aux. Submarine Chaser No.188, completed on 10 July 1944, struck a naval mine and sunk on 3 July 1945.
Aux. Submarine Chaser No.189, completed on 31 July 1944, sunk in action on 29 March 1945.
Aux. Submarine Chaser No.190, completed on 25 July 1944, survived war.

Aux. Submarine Chaser No.191, completed on 28 July 1944, survived war.
Aux. Submarine Chaser No.192, completed on 30 June 1944, sunk in action on 29 March 1945.
Aux. Submarine Chaser No.193, completed on 20 August 1944, survived war.
Aux. Submarine Chaser No.194, completed on 21 August 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed Mizutori (PB-42) on 1 May 1948.
Aux. Submarine Chaser No.195, completed on 18 August 1944, struck a naval mine and sunk on 6 June 1945.
Aux. Submarine Chaser No.196, completed on 15 October 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed Wakataka (PB-25) on 1 May 1948.
Aux. Submarine Chaser No.197, completed on 14 October 1944, struck a naval mine and sunk on 18 June 1945.
Aux. Submarine Chaser No.198, completed on 26 June 1944, survived war.
Aux. Submarine Chaser No.199, completed on 17 August 1944, missing in action in Spring 1945.
Aux. Submarine Chaser No.200, completed on 25 July 1944, sunk in action on 29 March 1945.

Aux. Submarine Chaser No.201, completed on 1 September 1944, survived war.
Aux. Submarine Chaser No.202, completed on 1 September 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed MS 14 on 1 May 1948.
Aux. Submarine Chaser No.203, completed on 14 October 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed Hiyodori (PB-22) on 1 May 1948.
Aux. Submarine Chaser No.204, completed on 18 September 1944, survived war.
Aux. Submarine Chaser No.205, completed on 30 September 1944, sunk in action on 29 March 1945.
Aux. Submarine Chaser No.206, completed on 25 August 1944, sunk in action on 26 June 1945.
Aux. Submarine Chaser No.207, completed on 17 August 1944, survived war.
Aux. Submarine Chaser No.208, completed on 6 October 1944, survived war.
Aux. Submarine Chaser No.209, completed on 28 July 1944, sunk in action on 26 June 1945.
Aux. Submarine Chaser No.210, completed on 29 August 1944, sunk in action on 5 May 1945.

Aux. Submarine Chaser No.211, completed on 20 September 1944, heavily damaged in action and sunk in shallow water on 18 July 1945.
Aux. Submarine Chaser No.212, completed on 25 October 1944, survived war.
Aux. Submarine Chaser No.213, completed on 28 November 1944, survived war. (in apraxia) Sold to Kanagawa Prefecture
Kanagawa Prefecture
is a prefecture located in the southern Kantō region of Japan. The capital is Yokohama. Kanagawa is part of the Greater Tokyo Area.-History:The prefecture has some archaeological sites going back to the Jōmon period...

on 16 February 1948.
No.2064 vessel (Aux. Submarine Chaser No.214), transferred to Karafuto Prefecture, before completed.
Aux. Submarine Chaser No.214, substitution of the No.2064 vessel, completed on 8 December 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed MS 14 on 1 May 1948.
Aux. Submarine Chaser No.215, completed on 15 August 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed MS 16 on 1 May 1948.
Aux. Submarine Chaser No.216, completed on 13 September 1944, sunk in action on 9 January 1945.
Aux. Submarine Chaser No.217, completed on 6 December 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed Tsugumi (PB-07) on 1 May 1948.
Aux. Submarine Chaser No.218, completed on 25 November 1944, survived war.
Aux. Submarine Chaser No.219, completed on 9 November 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed Shirasagi (PB-14) on 1 May 1948.
Aux. Submarine Chaser No.220, completed on 28 December 1944, survived war. Captured by Republic of China in 1945, betrayed to People's Republic of China in 1949.

Aux. Submarine Chaser No.221, completed on 28 August 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed MS 02 on 1 May 1948.
Aux. Submarine Chaser No.222, completed on 1 November 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed MS 03 on 1 May 1948.
Aux. Submarine Chaser No.223, completed on 25 November 1944, survived war. Captured by Republic of China in 1945, betrayed to People's Republic of China in 1949.
Aux. Submarine Chaser No.224, completed on 5 October 1944, sunk in action on 5 March 1945.
Aux. Submarine Chaser No.225, completed on 31 August 1944, sunk in action on 18 July 1945.
Aux. Submarine Chaser No.226, completed on 14 November 1944, survived war. (in apraxia)
Aux. Submarine Chaser No.227, completed on 24 October 1944, survived war.
Aux. Submarine Chaser No.228, completed on 21 September 1944, survived war.
Aux. Submarine Chaser No.229, completed on 11 January 1945, survived war.
Aux. Submarine Chaser No.230, completed on 25 October 1944, lost in an accident on 5 June 1945.

Aux. Submarine Chaser No.231, completed on 7 December 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed MS 17 on 1 May 1948.
Aux. Submarine Chaser No.232, completed on 31 December 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed Ōtaka (PB-09) on 1 May 1948.
Aux. Submarine Chaser No.233, completed on 10 November 1944, sunk in action on 31 March 1945.
Aux. Submarine Chaser No.234, completed on 1 November 1944, survived war.
Aux. Submarine Chaser No.235, completed on 18 September 1944, survived war.
Aux. Submarine Chaser No.236, completed on 26 October 1944, survived war.
Aux. Submarine Chaser No.237, completed on 15 January 1945, sunk in action on 11 June 1945.
Aux. Submarine Chaser No.238, completed on 25 November 1944, survived war.
Aux. Submarine Chaser No.239, completed on 12 January 1945, survived war.
Aux. Submarine Chaser No.240, completed on 9 January 1945, survived war. Captured by Republic of China in 1945.

Aux. Submarine Chaser No.241, completed on 22 October 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed MS 04 on 1 May 1948.
Aux. Submarine Chaser No.242, completed on 19 December 1944, survived war.
Aux. Submarine Chaser No.243, completed on 1 November 1944, survived war.
Aux. Submarine Chaser No.244, completed on 1 December 1944, sunk in action on 20 May 1945.
Aux. Submarine Chaser No.245, completed on 5 November 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed Manazuru (PB-03) on 1 May 1948.
Aux. Submarine Chaser No.246, completed on 22 January 1945, survived war. Transferred to Japan Maritime Safety Agency and renamed MS 05 on 1 May 1948.
Aux. Submarine Chaser No.247, completed on 11 December 1944, survived war.
Aux. Submarine Chaser No.248, completed on 11 November 1944, survived war.
Aux. Submarine Chaser No.249, completed on 14 November 1944, survived war. Transferred to Japan Maritime Safety Agency and renamed MS 06 on 1 May 1948.
Aux. Submarine Chaser No.250, completed on 6 October 1944, survived war.

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