(GM POOLSTER prewar)
IJN Salvage and Repair Vessel HOREI MARU:
Tabular Record of Movement
© 2009 Bob Hackett, Sander Kingsepp and Peter Cundall
26 May 1938:
Tandjong Priok, Batavia’s (now Jakarta's) harbor. Laid down at
Droogdok Maatschappij as a 1,565-ton salvage vessel.
3 February 1939:
Launched and named POOLSTER.
1 September 1939: Hitler invades Poland and World War II
Following the mobilization in the Netherlands, Dutch East Indies
Governor-General Alidius W. L. Tjarda van Starkenborgh-Stachouwer decides to
militarize some ships of the Gouvernementsmarine (GM) and they become part of
the Royal Netherlands Navy (RNN). The patrol boats are put under the RNN's East
6 September 1939:
POOLSTER and large patrol boats AREND, BELLATRIX,
FAZANT, MEREL, REIGER and VALK are converted to seaplane tenders and assigned to
23 October 1939:
Supports patrol boat and coastal lighthouse operations.
24 September 1941:
GM POOLSTER is ordered to the Marine Lucht Dienst
(MLD)(RNN Air Service) base at Pontianak, Borneo to support Groep Vliegtuigen
(GVT)(Aircraft Group) 7’s reconnaissance missions.
6 December 1941:
POOLSTER and GVT.7 are transferred to Tarakan,
17 December 1941:
Ternate, Moluccas. POOLSTER is bombed by an IJN
Kawanishi H6K "Mavis"
flying boat, but both bombs she drops miss. As the Mavis departs, she is engaged
by an MLD Dornier Do-24K-1 flying boat. Both machines damage each other with
cannon and machine gun fire, but each returns to their base.
December 1941-January 1942:
Operates from western Borneo.
POOLSTER functions as a motor torpedo boat
1 March 1942:
POOLSTER’s captain requests permission to evacuate his
ship to Australia, but the request is denied. Instead, he is ordered to scuttle
POOLSTER and release her Javanese crew. He and his officers are ordered to
report to Bandung, central Java, for further orders.
Tandjong Priok. POOLSTER is scuttled by naval gunfire as a blockship.
FAZANT, MEREL and REIGER and other ships are similarly scuttled.
8 March 1942:
Bandung. Governor General Tjarda van
Starkenborgh-Stachouwer surrenders the Dutch East Indies. POOLSTER’s hulk comes
under Japanese control.
24 April 1942:
The Japanese begin work to raise POOLSTER.
1 September 1943:
Tandjong Priok. POOLSTER is raised by a detachment
of the IJN's No. 102 Repair Unit based at Surabaya. Renamed HOREI MARU. Towed to
15 November 1943:
Registered as an auxiliary salvage ship in the
Sasebo Naval District.
22 November 1943:
Outfitting work is completed.
23 November 1943:
26 November 1943
Arrives at Batavia, Java.
27 November 1943:
Arrives at Tjilatjap (now Cilacap).
3 January 1944:
At 1130, HOREI and KAINAN MARUs depart Surabaya at 8.5
knots in a convoy for Phuket, Siam (Thailand).
6 January 1944:
At 2030, HOREI MARU arrives at Phuket. The vessel
probably is there to inspect the wrecks of various Italian ships scuttled on 8
December 1941 to avoid Royal Navy capture.
15 April 1944:
Attached to the 11st Special Repair Unit at Surabaya.
1 May 1944:
At Surabaya. Lt (jg) Choshoin Hiro is in charge. The
salvage gear is landed; shifts to different wharf thereafter.
13 May 1944:
Loads water from a barge.
14-15 May 1944:
Surabaya. Shifts to a different wharf off the harbor
office. Continues to unload salvage gear.
16 May 1944:
Surabaya. Begins repairs to her steering engine.
17 May 1944: Operation TRANSOM:
Surabaya. British Admiral (later
Admiral of the Fleet, Sir) James F. Somerville’s Allied Task Force launches
planes from carriers HMS ILLUSTRIOUS and USS SARATOGA (CV-3) that bomb shipping
and harbor installations. The planes sink a transport and damage several
warships, cargo ships and a tanker. During the attack, she fires 28 13-mm and 60
7.7-mm rounds. HOREI MARU is not damaged. Shifts to a different wharf
18 May 1944:
Surabaya. HOREI MARU undergoes another air attack, but is
22-23 May 1944:
Alongside an unidentified cargo ship. Unloads salvage
24-25 May 1944:
Surabaya. Alongside harbor office quay. Unloads
26 May 1944:
Alongside an unidentified cargo ship. Loads salvage
28 May 1944:
Alongside an unidentified cargo ship. Loads depth
charges, machine guns and ammunition.
29-39 May 1944:
Receives salvage gear from an unidentified transport.
One type 93 13-mm machine gun and one Type 93 7.7-mm machine gun are fitted.
Alongside an unidentified cargo ship. Loads salvage materials.
30 October 1944:
Arrives at Balikpapan.
2 November 1944:
Temporarily anchors 1 km south of Rangasa Island.
3 November 1944:
At 1246, attacked by aircraft off Endhill Point. At
1251, a near miss disables the rudder. After repairs are completed by 1310,
proceeds to Dent Haven.
4 November 1944:
Arrives at Tarakan Island and departs later that day.
6 November 1944:
Arrives at Cabulauan Island and anchors 78 degrees to
south about 2 nautical miles off the island.
7 November 1944:
Departs Cabulauan Islands.
8 November 1944:
Arrives at Manila. Berths at the U1 anchorage. Begins
repair of main engine.
9 November 1944:
Shifts to the S4 anchorage.
11 November 1944:
Unloads salvage materials.
12 November 1944:
Undergoes communication and weapons repairs.
13 November 1944:
Manila. Rear Admiral Frederick C. Sherman’s carrier
task groups TG 38.1, TG 38.3, and TG 38.4 of TF 38 attack Manila. TF 38’s planes
sink several warships and merchant ships and damage others. HOREI MARU is not
14 November 1944: Admiral Sherman continues air strikes against the
Philippines. TF 38’s planes sink several more merchant ships in Manila and
damage others, but again HOREI MARU is not damaged.
15-17 November 1944:
Unloads salvage materials.
18 November 1944:
Embarks four 25-mm AA guns.
19 November 1944:
HOREI MARU undergoes an air attack. Vice Admiral
John S. McCain’s Task Force 38’s aircraft attack shipping off Luzon. During the
attack, HOREI MARU fires 360 13-mm and 401 7.7-mm, but is not damaged.
Begins installation of four Type 96 25-mm AA guns.
20-24 November 1944:
Unloads salvage materials.
25 November 1944:
Rear Admiral Gerald F. Bogan’s TG 38.2 and Rear
Admiral Frederick C. Sherman’s TG 38.3’s planes attack central Luzon and sink
several warships and merchant ships and damage others. During the attack, HOREI
MARU fires 330 13-mm and 286 7.7-mm rounds, but is not damaged.
7 December 1944:
Installation of additional armament is completed
consisting of four Type 96 25-mm AA guns, one Type 93 13.2-mm and one Type 92
7.7-mm machine gun.
4 April 1945:
Mako, Pescadores. HOREI MARU is anchored at the main
pier in the harbor next to small tanker KINYU MARU No. 2 that is unloading fuel
oil when they are attacked by USAAF B-25 medium bombers of the 498th and 500th
Bomb Squadrons of the 345 Bomb Group.
The bombers hit and set KINYU MARU No. 2 afire. The blaze also engulfs
HOREI MARU. She sinks at 23-32N, 119-39E.
10 August 1945:
Removed from the Navy List.
Thanks go to Jan Visser "Visje" of the Netherlands.
- Bob Hackett Sander Kingsepp and Peter Cundall
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