@Updated - January 16, 2012 - Allyn Nevitt
@Revised - Allyn Nevitt with Anthony Tully - August 2014
Name Translation:"Early Frost"
20 February 1944:
Completed at Maizuru; assigned same date to Desron 11, First Fleet, for training. Ship's captain: Commander Arai Yasuo  (prev. C.O. ASAGIRI).
Arrives at Kure.
Desron 11 reassigned to Combined Fleet.
Departs Saginoseki, Kyushu with RYUHO. Arrived Kagoshima.
HAYASHIMO and RYUHO depart Kagoshima for Ise Bay.
Arrived Ise Bay. Depart.
HAYASHIMO and RYUHO arrived at Kure.
Departed Kure; anchored at Yashima.
Departed Yashima with TAIHO; arrived at Hashirajima the next day.
Commander Arai relieved by Lieutenant Commander Hirayama Toshio  (prev. C.O. AKISHIMO).
Departed Yashima anchorage on towing and other exercises with JUNYO. Returned to Yashima.
Arrived Kure. Carried out maintenance work, then departs for Hashirajima.
Depart Hashirajima for Yokosuka.
Arrived at Yokosuka.
Assigned to Desron 2, Second Fleet.
Departs Yokosuka for West Inland Sea.
Arrived at Iwakuni.
Departs Iwakuni with RYUHO for Yashima anchorage.
With RYUHO departs Iwakuni for training. Arrived at Tokuyama.
With RYUHO sails to Saeki Bay, Kyushu.
1100: Departed Saeki Bay with carrier task force: CarDiv 2's JUNYO and RYUHO and CarDiv 3's ZUIHO, CHIYODA, CHITOSE super-battleship MUSASHI and DesRon 11's AKISHIMO and HAYASHIMO, DesDiv 4's MICHISHIO, NOWAKI and YAMAGUMO, DesDiv 27's SHIGURE and DesDiv 32's TAMANAMI.
Depart Tawi Tawi with HARUSAME on overnight anti-submarine sweep.
Alerted of enemy submarines detected outside the bay, depart with TANIKAZE, SHIMAKAZE and ISOKAZE on anti-submarine sweep. However, TANIKAZE is torpedoed and sunk during this operation.
0700: Meets TAIHO at sea for increased protection while training, and five hours later they arrive back at Tawi Tawi.
1700: Joins Mobile Fleet with Desdiv 4's MICHISHIO in departing heading towards the Philippine Sea. Screens Force "B" consisting of CarDiv 2's JUNYO and RYUHO, BatDiv 1's NAGATO, CruDiv 7's MOGAMI.
0230: HAYASHIMO refuled from SEIYO MARU, then rejoins Main Body.
19-20 June 1944: Battle of the Marianas (Battle of the Philippine Sea)
Escorted Rear-Admiral Joshima Takatsugu's Force B.
19 June 1944:
1640: Three "Tenzans" from a ZUIKAKU strike return, but are unable to land. Two land on JUNYO and one ditches. HAYASHIMO rescues the aircraft crew.
Second day of Battle of Mariana
With JUNYO and RYUHO, covered by NAGATO and MOGAMI and eight destroyers in screen (MICHISHIO, AKISHIMO, HAYASHIMO, SHIGURE, SAMIDARE, HAMAKAZE, NOWAKI, and YAMAGUMO)
- 1932: Carrier HIYO sinks after bomb and torpedo hits from enemy aircraft. HAYASHIMO participates in the rescue efforts, taking aboard 16 officers and 216 men.
- 0630: HAYASHIMO attacked by two enemy aircraft, repulsed them with gunfire.
- 0905: Heads for Okinawa via Guimaras with HAMAKAZE, SHIGURE, MICHISHIO, and AKISHIMO.
- 0905: Arrived at Nakagusuku Bay, Okinawa.
- 1430: Depart with CruDiv 7 for the homeland.
2120: Arrive with Crudiv 7 in West Inland Sea.
With AKISHIMO escorting MYOKO and HAGURO on troop transport mission from Kure via Manila (5 -6 July) and Zamboanga (8 July) to Singapore.
0715: Stopover at Guimaras Island; departs two hours later.
With AKISHIMO arrived at Sinagpore with MYOKO and HAGURO.
Arrived at Lingga Roads from Singapore. Hereafter intensive training, with intermittent replenishment and recreation by shuttling between Lingga and Singapore.
Assigned to Desdiv 2 (HAYASHIMO, AKISHIMO, KIYOSHIMO), Desron 2, Second Fleet. Flagship of Comdesdiv 2, Captain Shiraishi Nagayoshi  (prev. C.O. URAKAZE).
1600: With AKISHIMO depart Singapore for Manila assigned to independent duty for Southwest Area Fleet to transfer HQ of Thirty-First Army from Manila to Saigon.
1620: Desdiv 2 (HAYASHIMO, AKISHIMO) nearing Manila are detached from Southwest Area Fleet duty and immediately re-assigned back to Kurita's command and ordered by him at 2005 to proceed to Brunei. (However, they fail to receive this message till the next morning.)
- 0800: HAYASHIMO and AKISHIMO arrive off Manila Bay, remaining outside due to air attack in progress.
- 1030: Belatedly receiving Kurita's 2005 17 October order, HAYASHIMO and AKISHIMO abandon entering Manila and reverse course heading for Borneo.
1100: HAYASHIMO and AKISHIMO attacked by USS DARTER and DACE with four torpedoes. No damage.
0930: HAYASHIMO and AKISHIMO arrive at Brunei. HAYASHIMO refuels from YAMATO.
23-26 October 1944: Battle of Leyte Gulf 
Escorted Vice-Admiral Kurita Takeo's 1st Diversion Attack Force as part of Desron 2: Desron 2 flagship NOSHIRO, DesDiv 2's HAYASHIMO, AKISHIMO, KIYOSHIMO, DesDiv 31's KISHINAMI, OKINAMI, ASASHIMO, DesDiv 32's FUJINAMI, NAGANAMI, HAMANAMI, and SHIMAKAZE attached.
Anti-submarine action in Palawan Passage. Cruisers ATAGO and MAYA sunk; cruiser TAKAO damaged.
- 1305: Enemy submarine detected; attacks with depth charges.
In Battle in Sibuyan Sea, claims three enemy aircraft shot down. No damaged received.
(Battle off Samar)
- 1323: HAYASHIMO halted after near-misses from enemy bombs puncture and contaminate fuel tanks, one tearing a 30 meter wide hole. Engines rendered unseable till fuel situation corrected. Hove to to attempt temporary repairs.
- 1640: Sixth enemy air raid of approximately 40 aircraft causes further damage by strafing and near-misses. Communications and gyro-compass are destroyed.
- 1757: With AKISHIMO ordered to guard and tow if necessary, HAYASHIMO gets back underway, and the two destroyers proceed to follow the main Kurita force retiring through San Bernardino Strait.
- 1830: With AKISHIMO leading the way, the two destroyers enter San Bernardino Strait unmolested.
- 0614: Kurita Force is at western end of Tablas Strait, and AKISHIMO and HAYASHIMO sight them as they catch up. However, HAYASHIMO is down to 7 tons of useable fuel and has to slow to 12 knots. Because of this, Comdesdiv 2 Captain Shiraishi releases AKISHIMO at 0750 and orders her to speed up to rejoin the Main Body.
- 0910 ComDesRon 2 aboard NOSHIRO (just hit by a torpedo) orders AKISHIMO to return to HAYASHIMO for she is coming under attack.
- 1000: Comdesdiv 2 orders AKISHIMO to return to NOSHIRO, for HAYASHIMO is down to 5 tons of fuel. Captain Shiraishi has decided she must temporarily anchor near Semirara Bay. The ship will be lightly grounded on a reef at low tide for temporary repairs to plug the leaks. The torpedo warheads jettisoned as a precaution.
- c1045-1050: HAYASHIMO attacked by enemy torpedo planes. One torpedo hits the port bow far forward around frame 12 so that it collapses the forecastle deck forward of frame 17 and No.1 turret in such as way as to fold down to form a `blunt' bow. All personnel in No.1 turret are killed. The folded bow forms an artificial buklhead and the destroyer is thus able to remain navigable but has burned up nearly all of her fuel. Lt.Cdr. Hirayama is wounded, and Captain Shiraishi takes direct command.
- 1118: OKINAMI (loaded with SUZUYA survivors) sights HAYASHIMO "lying to" west side of Semirara Island. Learning by blinker that the latter is down to a mere 5 tons of fuel, OKINAMI comes alongside to transfer some fuel.
- 1440: OKINAMI is forced to suspend the refuel attempt because of enemy planes. Her skipper recommends that HAYASHIMO be abandoned, but Hirayama refuses. Therefore at - 1530 OKINAMI leaves the area and proceeds to Coron, with orders to convey HAYASHIMO's situation details and requests to superiors since her radio is inoperable. By this time, 15 tons of fuel had been pumped into an undamaged tank, but more fuel and escort is needed to continue voyage to Coron. HAYASHIMO has to remain overnight "parked" at Semirara.
- 0235 Coron: ComDesron 2 Hayakawa Mikio aboard HAMANAMI orders FUJINAMI (then somewhere between Semirara and Coron) "after 60% refueling, to proceed to HAYASHIMO at Semirara, refuel her," and bring her home.
- Morning: Not long after sunrise at 0645 the first of several harrassing air attacks begin in the Mindoro-Semirara Island area. FUJINAMI arrives and attempts to assist, only to be hit by a bomb amidships, broken in half, and sunk at approximately 0920. HAYASHIMO herself is attacked again, and unable to send boats to rescue due to strafing. A second rescue ship, destroyer SHIRANUHI, arrives, only to herself be sunk by dive-bombers around 1330. Ultimately the entire crew of both destroyers and the CHOKAI survivors aboard FUJINAMI all perish. For all this, HAYASHIMO claimed one enemy plane shot down in turn. At day's end repeated near-misses have rendered HAYASHIMO's rudder inoperable and flooded her steering room; causing her to settle aft with fantail awash and become firmer aground. That evening a fire broke out in the engine room and raged unchecked, further gutting the vessel.
Sunk: With stern firmly settled and aground on the reef, HAYASHIMO is declared lost and the ensign lowered. Communications officer Yamaguchi Yuichiro is placed in charge of the land contingent.
A floatplane from NACHI looking for SHIRANUHI spots the grounded HAYASHIMO and lands. ComDesdiv 2 Shiraishi writes a letter for the pilot to take back to Manila command to arrange for the rescue of 50 wounded and 150 other survivors gathered on the islet. Rescue is not urgent, as provisions for two months are on hand.
At orders of Special Base Force 31 in Manila, NO.3 ASAHI MARU and two motor sailing vessels "kihansen" are en-route to pick up the survivors from Semirara.
Nearly all remaining crew removed from the ship or islet. Approximately 120 survivors, including Comdesdiv 2 (Captain Shiraishi) and Lieutenant Commander Hirayama (to C.O. SUZUTSUKI), and most of her officers and crew leave HAYASHIMO to transfer to a "wooden lighter.” [These kihansen were combination screw-sail wood boats]. A caretaker crew of 30 men armed with rifles and pistols led by senior surviving officer Lt. Tanaka Giichi is charged to remain behind with provisions on the adjacent islet to stand watch over the wreck to prevent capture, until sufficient explosives arrived to destroy the vessel.
The lighter bearing HAYASHIMO's officers and crew arrives at Manila.
An enemy patrol plane makes a low level run over grounded HAYASHIMO. This is repeated each day after.
Because of the increased air attack danger; all remaining personnel of the caretaker crew leave the destroyer and move ashore. There engaged in "observation duties." No further casualties had resulted.
1420: HAYASHIMO is attacked and bombed by a low-flying B-24. One direct bomb hit in the vicinity of the galley on the port-side of the bridge was received, and the area heavily damaged. All sections below the water line except No.3 crew space and No.1 magazine were flooded. HAYASHIMO settled down 1 meter further. The charges in No.1 turret were burnt and fire broke out elsewhere. The phone system was also put out of action. After this attack HAYASHIMO is finally truly abandoned. The caretaker crew leaves the islet and proceeds in two cutters over to Mindoro Island, where they join the army garrison there.
The abandoned wreck was shelled briefly again at 1340 December 15 1944 by USS Walke which fires more than 100 rounds into her during the Mindoro invasion and set afire again, but the damage is unknown.
The grounded wreck of HAYASHIMO is inspected and items of interest documented or removed. Thereafter, disposition is unclear. It is unknown if ever fully salvaged. At this time the destroyer was still upright, but with fantail submerged to top of No.3 turret.
10 January 1945:
Removed from Navy List.
 This first strike on the morning of 26 October had been launched at 0605 from TG 38.1 McCain’s Wasp, Hornet, Hancock,and Cowpens.Yamato's radar picked them up at 0835 and the attack commenced five minutes later, lasting about forty minutes. Position of Kurita force at the time: 11-55’N, 121-43’E. However, U.S. squadron records show Hayashimo's damage came in the second strike launched at 0830 by TG 38.1 from Wasp, Hornet, Cowpens, and Monterey. This attack damaged Hayashimo and finished off Noshiro with a torpedo hit. It is notable the torpedo damage to Hayashimo took place after second detaching of Akishimo from screen duty. It proved therefor arguably premature. ( - Tully)
 This is one of the greater disasters of the IJN, with sparse dcoumentation, and untangling who hit what in this epic series of misfortunes is difficult. However, Allied squadron reports show that Fujinami was attacked and sunk by a group of eight fighter-bombers launched at 0618 from USS Franklin (CV-13). They reported leaving an "Aoba-class" cruiser afire in sinking condition. This generates what proves to be a fatal degree of TF 38 interest in the Semirara area. Planes launched at 1007 from USS Essex (CV-9) are sometimes credited, but the same reports and chronology make clear that the Essex planes in fact bombed Hayashimo herself at noon, claiming one hit behind the bridge and one very near-miss off port bow of a grounded destroyer with a damaged bow (clinching the identification.) Finally, dive-bombers launched at 1015 from USS Enterprise (CV-6) to destroy the "Aoba-class" cruiser apparently sank Shiranuhi. ( - Tully)
 Editorial Note: CTG 78.3.5 directed Hayashimo's destruction in response to a report from CTG 78.3.6 at 1239 Dec 15 of "enemy DD in Pandarochan Bay." USS Walke gave the position as 12-04'N, 121-21'E. In fact, U.S.N. reports about the wreck were apt to confuse that day -- as it was variously described as "reported in vicinity of Semirara Island hiding behind rock" and "in a cove on the western side of Semirara Island"or as a "damaged enemy cruiser" in Mangarin Bay, and minesweepers "sighted a destroyer hard on a rocky shoal between Ilin Island and Mindoro." To date the Editor is uncertain of the location on the Semirara coast of the Hayashimo islet. ( - Tully)