Japanese Auxiliary Netlayers

KYUSETSUMOKAN!

BOSEMMOTEI!

(DAIKOKUTEN MARU, postwar)

IJN DAIKOKUTEN MARU:
Tabular Record of Movement

© 2020 Gilbert Casse, Berend van der Wal and Peter Cundall

21 March 1927:
Aioi. Laid down by Kobeseikosho Harima Zosen Kojo K.K. as a 641-tons cargo ship for Tohoku Shosen K.K.
23 May 1927:
Launched and named DAIKOKUTEN MARU.
1 June 1927:
Completed with a Gross Registered Tonnage (GRT) of 641-tons and Net Registered Tonnage (NRT) of 345-tons. Her registered homeport is Hakodate. Later this year her GRT changes to 640-tons. [1]
18 May 1933 ~ 7 January 1935:
Chartered by Onishi Shinji.
12 January 1935:
Her owners are changed to Iino Kisen K.K. Later that year her registered homeport changes to Kobe.
22 July 1938:
Requisitioned by the IJN.
E October 1938:
Arrives at Qichun, China.
10 October 1938:
1558 ~ 1630: alongside to port of auxiliary destroyer tender NIHONKAI MARU and transfers a gun barrel of torpedo boat HATO. Later departs for Jiujiang, China.
28 November 1938:
1650 ~ 1815: alongside to starboard of NIHONKAI MARU and supplies her with coal.
15 January 1939:
Released to her owners.
1940:
Her GRT and NRT are respectively changed to 646-tons and 340-tons. [1]
13 March 1941:
Her owners are changed to Iino Kaiun Sangyo K.K. Her registered homeport changes to Higashi-Maizuru and her GRT changes to 647-tons. [1]
2 December 1941:
Requisitioned by the IJN.
3 December 1941:
Approved for military service.
7 December 1941:
Departs Kure for Kozaki. Later that month, conversion to military duty begins at the Kure Naval Yard.
10 December 1941:
Registered as an auxiliary netlayer attached to Kure Naval District.
13 December 1941:
Navy (Resv) Lt(jg) Kanao Gaku is appointed commanding officer.
31 December 1941:
Attached to the Saeki Defense Force under instruction No. 1780.
2 January 1942:
Changes anchorage.
14 January 1942:
Departs Kure for various exercises and returns to port later this day.
15 January 1942:
Changes anchorage.
16 January 1942:
Completes conversion to military duty at the Kure Naval Yard. Thereafter, departs Kure and arrives at Saeki later that day.
17 January 1942:
Changes anchorage.
29 January 1942:
Departs Saeki for various exercises and returns there later this day.
5 February 1942:
Departs Saeki for various exercises and arrives at Misaki later that day.
16 February 1942:
Departs Misaki for various exercises and arrives at Usuki later this day.
17 February 1942:
Departs Usuki for various exercises and at Saeki later that day.
18 February 1942:
Departs Saeki for various exercises and arrives at Sukumo later this day.
20 February 1942:
Departs Sukumo. Discovers a floating mine 183° and 2.5 miles off Okishima lighthouse. Destroys the mine with rifle fire. Fires 68 rounds.
21 February 1942:
Arrives at Yonozu.
23 February 1942:
Departs Yonozu.
24 February 1942:
Arrives at Saeki.
25 February 1942:
Departs Saeki and arrives at Sukumo later that day.
26 February 1942:
Departs Sukumo.
27 February 1942:
Arrives at Saeki.
28 February 1942:
Departs Saeki and returns to port later this day.
8 March 1942:
Departs Saeki on a trial run and arrives at Sukumo later that day.
9 March 1942:
Departs Sukumo.
10 March 1942:
Arrives at Sukumo.
12 March 1942:
Departs Sukumo for various exercises and arrives at Saeki. Departs later that day.
13 March 1942:
Arrives at Saeki.
15 March 1942:
Departs Saeki.
16 March 1942:
Arrives at Saeki.
18 March 1942:
Departs Saeki.
19 March 1942:
Arrives at Saeki.
22 March 1942:
Departs Saeki.
23 March 1942:
Arrives at Saeki.
25 March 1942:
Departs Saeki.
26 March 1942:
Arrives at Saeki.
28 March 1942:
Departs Saeki.
29 March 1942:
Arrives at Saeki.
2 April 1942:
Departs Saeki on a gunnery exercise and returns to port later this day.
4 April 1942:
Departs Saeki.
5 April 1942:
Arrives at Saeki.
6 April 1942:
Departs Saeki on an anti-submarine exercise and returns to port later this day.
7 April 1942:
Departs Saeki.
9 April 1942:
Arrives at Saeki.
11 April 1942:
Departs Saeki.
12 April 1942:
Arrives at Saeki.
13 April 1942:
Departs Saeki.
14 April 1942:
Arrives at Saeki.
15 April 1942:
Departs Saeki.
16 April 1942:
Arrives at Saeki.
17 April 1942:
Departs Saeki.
18 April 1942:
Arrives at Saeki.
19 April 1942:
Departs Saeki.
20 April 1942:
Arrives at Saeki.
21 April 1942:
Departs Saeki.
22 April 1942:
Arrives at Saeki.
23 April 1942:
Departs Saeki and returns to port later that day.
25 April 1942:
Departs Saeki.
26 April 1942:
Arrives at Saeki.
28 April 1942:
Departs Saeki.
29 April 1942:
Arrives at Saeki.
1 May 1942:
Departs Saeki.
2 May 1942:
Arrives at Saeki.
4 May 1942:
Departs Saeki.
5 May 1942:
Arrives at Saeki.
7 May 1942:
Departs Saeki on an anti-submarine exercise.
8 May 1942:
Arrives at Saeki.
10 May 1942:
Departs Saeki.
11 May 1942:
Arrives at Saeki.
13 May 1942:
Departs Saeki.
14 May 1942:
Arrives at Saeki.
16 May 1942:
Departs Saeki on a gunnery exercise.
17 May 1942:
Arrives at Saeki.
19 May 1942:
Departs Saeki.
20 May 1942:
Arrives at Saeki.
21 May 1942:
Departs Saeki.
22 May 1942:
Arrives at Saeki.
24 May 1942:
Departs Saeki.
25 May 1942:
Arrives at Saeki.
27 May 1942:
Departs Saeki.
28 May 1942:
Arrives at Saeki.
30 May 1942:
Departs Saeki.
31 May 1942:
Arrives at Saeki.
2 June 1942:
Departs Saeki.
3 June 1942:
Arrives at Saeki.
5 June 1942:
Departs Saeki.
6 June 1942:
Arrives at Saeki.
8 June 1942:
Departs Saeki.
9 June 1942:
Arrives at Saeki.
10 June 1942:
Departs Saeki on a defensive exercise and returns there later this day.
11 June 1942:
Departs Saeki on a defensive exercise and returns to port later that day.
13 June 1942:
Changes anchorage.
6 July 1942:
Departs Saeki on a trial run and returns there later this day.
8 July 1942:
Departs Saeki on an anti-submarine exercise.
11 July 1942:
Arrives at Saeki.
12 July 1942:
Departs Saeki.
13 July 1942:
Arrives at Saeki.
15 July 1942:
Departs Saeki.
16 July 1942:
Arrives at Saeki.
18 July 1942:
Departs Saeki and returns there later that day.
20 July 1942:
Changes anchorage.
24 July 1942:
Changes anchorage.
1 August 1942:
Navy (Resv) Lt(jg) Asano Ginichi is appointed CO.
20 September 1942:
Departs Kure on a trial run and returns to port later this day.
21 September 1942:
Departs Kure and arrives at Saeki later that day.
25 September 1942:
Departs Saeki.
26 September 1942:
Arrives at Saeki.
28 September 1942:
Departs Saeki.
29 September 1942:
Arrives at Saeki.
1 October 1942:
Departs Saeki.
2 October 1942:
Arrives at Saeki.
4 October 1942:
Departs Saeki.
5 October 1942:
Arrives at Saeki.
7 October 1942:
Departs Saeki.
8 October 1942:
Arrives at Saeki.
10 October 1942:
Departs Saeki.
11 October 1942:
Arrives at Saeki.
13 October 1942:
Departs Saeki.
15 October 1942:
Arrives at Saeki.
16 October 1942:
Departs Saeki.
17 October 1942:
Arrives at Saeki.
19 October 1942:
Departs Saeki and returns there later this day.
21 October 1942:
Departs Saeki.
22 October 1942:
Arrives at Saeki.
24 October 1942:
Departs Saeki on an anti-submarine sweep with auxiliary netlayer KOA MARU and auxiliary subchasers and small patrol boats SHINKO, NISUI, TAITON, HOKUTO and MATO MARUs and NITTO MARU No. 5.
26 October 1942:
Arrives at Furue and departs there later that day.
27 October 1942:
Arrives at Saeki.
28 October 1942:
Departs Saeki.
29 October 1942:
Arrives at Kure.
20 November 1942:
Departs Kure.
21 November 1942:
Arrives at Saeki.
23 November 1942:
Departs Saeki.
24 November 1942:
Arrives at Saeki.
26 November 1942:
Departs Saeki.
27 November 1942:
Arrives at Saeki.
29 November 1942:
Departs Saeki.
30 November 1942:
Arrives at Saeki.
2 December 1942:
Departs Saeki.
3 December 1942:
Arrives at Saeki.
5 December 1942:
Departs Saeki.
6 December 1942:
Arrives at Saeki.
8 December 1942:
Departs Saeki.
9 December 1942:
Arrives at Saeki.
11 December 1942:
Departs Saeki.
12 December 1942:
Arrives at Saeki.
14 December 1942:
Departs Saeki.
15 December 1942:
Arrives at Saeki.
16 December 1942:
Departs Saeki.
18 December 1942:
Arrives at Saeki.
19 December 1942:
Departs Saeki.
20 December 1942:
Arrives at Saeki.
21 December 1942:
Departs Saeki.
22 December 1942:
Arrives at Saeki.
23 December 1942:
Departs Saeki.
24 December 1942:
Arrives at Saeki.
25 December 1942:
Departs Saeki.
26 December 1942:
Arrives at Saeki.
28 December 1942:
Departs Saeki.
29 December 1942:
Arrives at Saeki.
31 December 1942:
Departs Saeki.
1 January 1943:
Arrives at Saeki.
3 January 1943:
Departs Saeki.
4 January 1943:
Arrives at Saeki.
6 January 1943:
Attached to an auxiliary sweeping corps under telegram No. 8. Departs Saeki on an anti-submarine sweep in D and I areas.
8 January: 1943:
Arrives at Saeki.
10 January 1943:
Scheduled to take over escort of auxiliary oiler KIYO MARU from minelayer TAKASHIMA and to escort her to Fukushima under Kure Naval District telegram No. 95. Departs Saeki on an anti-submarine sweep.
11 January 1943:
Receives Kure Defense Division Wireless Command No. 97: 1: Estimated position of KIYO MARU at 1800 on 11 Jan ’43 will be 29-40N, 132-27E and heading to Fukushima. Her speed is 7.5 knots.
2: After completing the current mission NATSUSHIMA is to meet KIYO MARU and escort her to Fukushima before returning to Saeki.
DAIKOKUTEN MARU is delayed because of engine failure and searches for escort auxiliary netlayer SHOSEI MARU.
13 January 1943:
Arrives at Saeki.
16 January 1943:
Departs Saeki.
17 January 1943:
Arrives at Saeki.
18 January 1943:
Departs Saeki.
20 January 1943:
Arrives at Kure.
7 February 1943:
Departs Kure.
8 February 1943:
Arrives at Saeki.
9 February 1943:
Departs Saeki.
10 February 1943:
Arrives at Saeki.
12 February 1943:
Departs Saeki.
13 February 1943:
Arrives at Saeki.
15 February 1943:
Departs Saeki.
16 February 1943:
Arrives at Saeki.
18 February 1943:
Departs Saeki.
19 February 1943:
Arrives at Saeki.
21 February 1943:
Departs Saeki.
22 February 1943:
Arrives at Saeki.
23 February 1943:
Departs Saeki.
24 February 1943:
Arrives at Saeki.
26 February 1943:
Departs Saeki.
27 February 1943:
Arrives at Saeki.
1 March 1943:
Departs Saeki.
2 March 1943:
Arrives at Saeki.
4 March 1943:
Departs Saeki.
5 March 1943:
Arrives at Saeki.
7 March 1943:
Departs Saeki on an anti-submarine exercise.
8 March 1943:
Arrives at Saeki.
10 March 1943:
Departs Saeki.
11 March 1943:
Arrives at Saeki.
13 March 1943:
Departs Saeki.
14 March 1943:
Arrives at Saeki.
16 March 1943:
Departs Saeki on an anti-submarine exercise.
17 March 1943:
Arrives at Saeki.
19 March 1943:
Departs Saeki.
20 March 1943:
Arrives at Saeki.
22 March 1943:
Departs Saeki.
23 March 1943:
Arrives at Saeki.
25 March 1943:
Departs Saeki.
26 March 1943:
Arrives at Saeki.
28 March 1943:
Departs Saeki on an anti-submarine exercise.
30 March 1943:
Arrives at Saeki.
31 March 1943:
Departs Saeki.
1 April 1943:
Arrives at Saeki.
E 2 April 1943:
Navy (Resv) Lt(jg) Asano Ginichi is confirmed as CO.
3 April 1943:
Departs Saeki and arrives at Kure later this day.
21 April 1943:
Departs Kure.
22 April 1943:
Arrives at Saeki.
25 April 1943:
Departs Saeki.
26 April 1943:
Arrives at Saeki.
27 April 1943:
Departs Saeki on a recruit training exercise and returns to port later that day.
28 April 1943:
Departs Saeki.
29 April 1943:
Arrives at Saeki.
1 May 1943:
Departs Saeki.
2 May 1943:
Arrives at Saeki.
4 May 1943:
Departs Saeki.
5 May 1943:
Arrives at Saeki.
7 May 1943:
Departs Saeki on a gunnery exercise.
8 May 1943:
Arrives at Saeki.
10 May 1943:
Departs Saeki.
11 May 1943:
Arrives at Saeki.
13 May 1943:
Departs Saeki.
14 May 1943:
Arrives at Saeki.
15 May 1943:
Departs Saeki.
16 May 1943:
Arrives at Saeki.
18 May 1943:
Departs Saeki on an anti-submarine exercise.
19 May 1943:
Arrives at Saeki.
20 May 1943:
Departs Saeki.
21 May 1943:
Arrives at Saeki.
24 May 1943:
Departs Saeki.
25 May 1943:
Arrives at Saeki.
27 May 1943:
Departs Saeki.
28 May 1943:
Arrives at Saeki.
30 May 1943:
Departs Saeki.
31 May 1943:
Arrives at Saeki.
June 1943:
Navy Lt(jg) Saeki Takeshi is appointed CO.
2 June 1943:
Departs Saeki.
3 June 1943:
Arrives at Saeki.
5 June 1943:
Departs Saeki.
6 June 1943:
Arrives at Saeki.
8 June 1943:
Departs Saeki on a mine disposing mission.
9 June 1943:
Arrives at Saeki.
10 June 1943:
Departs Saeki.
11 June 1943:
Arrives at Saeki.
13 June 1943:
Departs Saeki.
14 June 1943:
Arrives at Saeki.
16 June 1943:
Departs Saeki on a mine disposing mission.
19 June 1943:
Arrives at Saeki.
21 June 1943:
Departs Saeki.
22 June 1943:
Arrives at Saeki.
24 June 1943:
Departs Saeki and returns there later this day.
26 June 1943:
Departs Saeki.
27 June 1943:
Arrives at Saeki.
29 June 1943:
Departs Saeki.
30 June 1943:
Arrives at Saeki.
July 1943:
Navy Ensign Iwamoto Asajiro is appointed CO.
2 July 1943:
Departs Saeki.
3 July 1943:
Arrives at Saeki.
14 July 1943:
Departs Saeki on an anti-submarine exercise.
15 July 1943:
Arrives at Saeki.
20 July 1943:
Departs Saeki.
21 July 1943:
Arrives at Saeki.
23 July 1943:
Departs Saeki.
24 July 1943:
Arrives at Saeki.
25 July 1943:
Departs Saeki to act as a target ship.
26 July 1943:
Arrives at Saeki.
28 July 1943:
Departs Saeki to act as a target ship.
29 July 1943:
Arrives at Saeki.
August 1943:
Navy (Resv) Lt(jg) Hakozaki Kizuke is appointed CO.
3 August 1943:
Departs Saeki and returns to port later that day.
5 August 1943:
Departs Saeki.
6 August 1943:
Arrives at Saeki.
7 August 1943:
Departs Saeki.
8 August 1943:
Arrives at Saeki.
9 August 1943:
Departs Saeki.
10 August 1943:
Arrives at Saeki.
11 August 1943:
Departs Saeki.
12 August 1943:
Arrives at Saeki.
13 August 1943:
Departs Saeki.
14 August 1943:
Arrives at Saeki.
16 August 1943:
Departs Saeki on an audio test and returns to port later this day.
17 August 1943:
Departs Saeki.
18 August 1943:
Arrives at Saeki.
19 August 1943:
Anchors.
20 August 1943:
Departs Saeki.
21 August 1943:
Arrives at Saeki.
23 August 1943:
Departs Saeki.
24 August 1943:
Arrives at Saeki.
26 August 1943:
Departs Saeki to sweep assigned patrol area.
28 August 1943:
Arrives at Saeki.
29 August 1943:
Departs Saeki.
30 August 1943:
Arrives at Saeki.
31 August 1943:
Departs Saeki.
1 September 1943:
Arrives at Saeki.
2 September 1943:
Departs Saeki.
3 September 1943:
Arrives at Saeki.
13 September 1943:
Departs Saeki on calibration and trial run and returns there later that day.
14 September 1943:
Departs Saeki.
15 September 1943:
Arrives at Saeki.
16 September 1943:
Departs Saeki.
17 September 1943:
Arrives at Saeki.
18 September 1943:
Departs Saeki.
19 September 1943:
Arrives at Saeki.
20 September 1943:
Anchors.
21 September 1943:
Departs Saeki and returns to port later this day.
23 September 1943:
Departs Saeki.
24 September 1943:
Arrives at Saeki.
26 September 1943:
Departs Saeki.
27 September 1943:
Arrives at Saeki.
28 September 1943:
Anchors.
30 September 1943:
Anchors.
2 October 1943:
Departs Saeki.
3 October 1943:
Arrives at Kure.
10 October 1943:
Departs Kure.
11 October 1943:
Arrives at Innoshima.
November 1943:
Navy Lt(jg) Sasaki Masaru is appointed CO.
2 November 1943:
Departs Innoshima on a trial run and returns to port later that day.
5 November 1943:
Departs Innoshima annd arrives at Kure later this day.
9 November 1943:
Departs Kure.
10 November 1943:
Arrives at Saeki.
13 November 1943:
Departs Saeki.
15 November 1943:
Arrives at Saeki.
17 November 1943:
Departs Saeki.
19 November 1943:
Arrives at Saeki.
20 November 1943:
Departs Saeki.
21 November 1943:
Arrives at Saeki.
24 November 1943:
Departs Saeki and returns there later that day.
25 November 1943:
Departs Saeki.
27 November 1943:
Arrives at Saeki.
29 November 1943:
Departs Saeki.
30 November 1943:
Arrives at Saeki.
2 December 1943:
Departs Saeki.
3 December 1943:
Arrives at Saeki.
5 December 1943:
Departs Saeki.
6 December 1943:
Arrives at Saeki.
8 December 1943:
Departs Saeki.
9 December 1943:
Arrives at Saeki.
11 December 1943:
Departs Saeki.
12 December 1943:
Arrives at Saeki.
13 December 1943:
Departs Saeki.
14 December 1943:
Arrives at Saeki.
16 December 1943:
Departs Saeki.
17 December 1943:
Arrives at Saeki.
19 December 1943:
Departs Saeki.
20 December 1943:
Arrives at Saeki.
21 December 1943:
Departs Saeki on an anti-submarine sweep.
23 December 1943:
Arrives at Saeki.
24 December 1943:
Departs Saeki.
25 December 1943:
Arrives at Saeki.
26 December 1943:
Departs Saeki.
27 December 1943:
Arrives at Saeki.
29 December 1943:
Departs Saeki.
30 December 1943:
Arrives at Saeki.
1 January 1944:
Departs Saeki.
2 January 1944:
Arrives at Saeki.
4 January 1944:
Departs Saeki.
5 January 1944:
Arrives at Saeki.
7 January 1944:
Departs Saeki.
8 January 1944:
Arrives at Saeki.
10 January 1944:
Departs Saeki.
11 January 1944:
Arrives at Saeki.
12 January 1944:
Departs Saeki.
13 January 1944:
Arrives at Saeki.
14 January 1944:
Departs Saeki.
15 January 1944:
Arrives at Saeki.
17 January 1944:
Departs Saeki on a Y equipment test.
18 January 1944:
Arrives at Saeki.
19 January 1944:
Departs Saeki.
20 January 1944:
Arrives at Saeki.
22 January 1944:
Departs Saeki.
23 January 1944:
Arrives at Saeki.
24 January 1944:
Departs Saeki.
28 January 1944:
Arrives at Saeki.
31 January 1944:
Departs Saeki and returns to port later this day.
2 February 1944:
Departs Saeki.
3 February 1944:
Arrives at Saeki.
5 February 1944:
Departs Saeki.
6 February 1944:
Arrives at Saeki.
8 February 1944:
Departs Saeki.
9 February 1944:
Arrives at Saeki.
11 February 1944:
Departs Saeki.
12 February 1944:
Arrives at Saeki.
14 February 1944:
Departs Saeki.
15 February 1944:
Arrives at Saeki.
17 February 1944:
Scheduled for an emergency transport mission to the South Seas under wireless transmission No. 171935. Departs Saeki.
18 February 1944:
Arrives at Saeki.
22 February 1944:
Scheduled to go to Yokosuka after loading cement at Moji under wireless transmission No. 222049.
23 February 1944:
Departs Saeki.
24 February 1944:
Arrives at Kure.
1 April 1944:
Her owners are restyled to Iino Kaiun K.K.
26 August 1944:
Departs Saeki.
28 August 1944:
Arrives at Saeki.
September 1944:
Navy Lt. Saito Manro is appointed CO.
1 September 1944:
Departs Saeki on transport mission.
4 September 1944:
Arrives at Saeki.
28 September 1944:
Departs Saeki on transport mission.
16 October 1944:
Departs Saeki on transport mission and returns there later that day.
20 October 1944:
Departs Saeki on an exercise and returns later this day.
1 November 1944:
Departs Saeki.
2 November 1944:
Arrives at Saeki.
9 November 1944:
Departs Saeki and calls at Hesaki. Departs there later that day.
10 November 1944:
Arrives at Wakamatsu and departs there for Kure Naval Yard.
E11 ~ 19 November 1944:
Undergoes maintenance and repairs. Departs Kure.
20 November 1944:
Arrives at Saeki.
29 November 1944:
Enters drydock. Departs later.
December 1944:
Departs Kure on transport mission for Tokuyama.
16 December 1944:
Arrives at Saeki.
21 December 1944:
Departs Saeki for Tokuyama. Later departs on transport mission for Wakamatsu and thereafter arrives at Saeki.
February 1945:
Navy Ensign Ikegawa Shizuki is appointed CO.
17 February 1945:
Departs Saeki on transport mission for Tokuyama.
23 February 1945:
Departs Karatsu.
24 February 1945:
Arrives at Tsukumi.
26 February 1945:
Departs Tsukumi and arrives at Saeki later this day.
28 February 1945:
Departs Saeki and arrives at Tokuyama later that day. Unloads 2,040 empty drums and 240 drums with waste oil.
15 August 1945:
Remains in service. She is later assigned SCAJAP No. D-035.
20 November 1945:
Removed from the Navy’s list under instruction No. 301730.
Circa 1950:
Owner is restyled Iino Kaiun K.K. Port of registry is changed to Maizuru.
1953:
Sold to Naigai Kaiun Sangyo K.K., Maizuru.
1955:
Sold to Konishi Kaiun Gyogyo K.K., Ofunato.
1960:
Sold to Y. Kambara, Numakuma. Renamed TENSYA MARU No. 15.
1961:
Converted to a motor vessel.
1967:
Scrapped at Numakuma, Hiroshima Ken.

Authors' Notes:
[1] NRT is a ship's cargo volume capacity expressed in "register tons", one of which equals to a volume of 100 cubic feet (2.83 m3). It is calculated by subtracting non-revenue-earning spaces i.e. spaces not available for carrying cargo, for example engine rooms, fuel tanks and crew quarters, from the ship's gross register tonnage (GRT). Net register tonnage (NRT) is not a measure of the weight of the ship or its cargo, and should not be confused with terms such as deadweight tonnage or displacement.
Thanks go to Gengoro S. Toda of Japan.

- Gilbert Casse, Berend van der Wal and Peter Cundall.

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