I’ve compiled a list of all of the minesweepers lost to Pacific actions, storms, and accidents.

Date Ship Fate Source
1944-09-24 YMS-19

Mine

  • Fate: sunk
  • Cause: mine
  • Location: off Palau, Philippines
  • Coordinates: 6°53’58″N 134°9’44″E
  • Action: Battle of Peleliu
wikimapia.org
1944-10-01 YMS-385

Mine

  • Fate: sunk
  • Cause: mine
  • Location: in Zowariau Channel, off Ulithi, Caroline Islands, Micronesia
  • Coordinates: 9°51’56″N 139°36’59″E
wikimapia.org
1944-10-17 YMS-70

Storm, Typhoon, Foundering

  • Fate: foundered
  • Cause: tropical storm
  • Location: in Leyte Gulf, Philippines
  • Coordinates: 10°56’N, 125°12’E
  • Action: Battle of Leyte
uboat.net
1945-02-14 YMS-48

Gunfire, Shore Batteries

  • Fate: scuttled
  • Cause: shore batteries, fire, & scuttling
  • Location: in Corregidor Bay, off Manila, Philippines
  • Coordinates: 14°25’N 120°34’E
  • Action: Battle for the Recapture of Corregidor
wikimapia.org
1945-04-03 YMS-71

Mine

  • Fate: sunk
  • Cause: mine
  • Location: off Bongao Island, Philippines
  • Coordinates: 4°58’N 119°47’E
wrecksite.eu
1945-04-08 YMS-103

Mine

  • Fate: destroyed
  • Cause: mine, beaching, & intentional destruction
  • Location: off Okinawa, Japan
  • Coordinates: 26°13’N 127°54’E
yms299.org
1945-05-02 YMS-481

Gunfire, Shore Batteries

  • Fate: sunk
  • Cause: shore batteries
  • Location: off Tarakan Island, Netherlands East Indies
  • Coordinates: 03°27’N 117°32’E
  • Action: Battle of Tarakan
uboat.net
1945-06-18 YMS-50

Mine

  • Fate: scuttled
  • Cause: mine & scuttling
  • Location: off Balikpapan, Netherlands East Indies
  • Coordinates: 01°18’S 116°49’E
  • Action: Battle of Balikpapan
wikipedia.org
1945-06-26 YMS-39

Mine

  • Fate: sunk
  • Cause: mine
  • Location: in Makassar Strait, off Balikpapan, Netherlands East Indies
  • Coordinates: 1°19’S 116°49’E
wrecksite.eu
1945-06-26 YMS-365

Mine

  • Fate: scuttled
  • Cause: mine & scuttling
  • Location: in Makassar Strait, off Balikpapan, Netherlands East Indies
  • Coordinates: 1°18’S 116°50’E
wrecksite.eu
1945-07-09 YMS-84

Mine

  • Fate: sunk
  • Cause: drifting mine
  • Location: off Balikpapan, Netherlands East Indies
  • Coordinates: 1°19’0″S 116°48’0″E
  • Action: Battle of Balikpapan
wikimapia.org
1945-09-16 YMS-98

Storm, Typhoon, Foundering

  • Fate: foundered
  • Cause: Typhoon Ida (category 1)
  • Location: off Okinawa, Japan
navsource.org
1945-09-16 YMS-341

Storm, Typhoon, Foundering

  • Fate: foundered
  • Cause: Typhoon Ida (category 1)
  • Location: in Buckner Bay, off Okinawa, Japan
navsource.org
1945-09-16 YMS-421

Storm, Typhoon, Foundering

  • Fate: foundered
  • Cause: Typhoon Ida (category 1)
  • Location: off Okinawa, Japan
navsource.org
1945-09-16 YMS-472

Storm, Typhoon, Foundering

  • Fate: foundered
  • Cause: Typhoon Ida (category 1)
  • Location: off Okinawa, Japan
uboat.net

In most cases, all or most of the crew survived as the damage didn’t cause immediate sinking and left time for abandoning and rescue. The biggest exceptions are the ships lost to Typhoon Ida, whom I also don’t have coordinates for. Those ships were lost to storms and their crews set adrift with most dying in the storm or to sharks.

The shark attacks from Typhoon Ida have been chronicled in a few memoirs:

Ida, while only a category 1 storm, tracked directly over Japan (the land mass the curve passes through):

Typhoon Ida track, October 1945

Typhoon Ida track, October 1945

The September 19 diary entry of David Dashiell (via Navsource) recounts the typhoon in Buckner Bay.

Last Saturday night we were alerted for a possible typhoon and early Sunday morning Typhoon Plan X-Ray was executed. Our orders were to remain in the harbor—larger vessels were to put to sea.

We stayed at anchor all Sunday morning while the winds and seas built up. Shortly after noon our anchor chain snapped and we were underway with no hope of riding the storm at anchor. Our port anchor had bent flukes and the larger portion of our anchor chain was resting on the bottom of Buckner Bay. We proceeded to the harbor entrance, slowly gaining against the wind and sea. There was some confusion at the submarine net gate as a dozen ships manoeuvered for position there .in. heavy seas. After passing the net, the seas were larger yet and we began to wonder if we were wise in putting to sea Several LCI’s were steaming parallel to us in column. As they rode to the crest of a wave, sometimes half of their keels from the stem aft would be exposed before they nosed down and descended the back of the wave. Large cargo ships rode up and down on the waves even as the smaller craft. We proceeded into the storm for several hours in an easterly direction in order to put a little sea room between us and the island and then we came to a southwesterly course, taking the sea on our starboard quarter and running before it. The seas became greater and once we fell into the trough, sliding from the crest to the trough on our beam ends. At that time the ’55 seemed to hesitate with her starboard rail immersed before her stability asserted itself a’nd she returned to the perpendicular, (In retrospect, it seems to me that this occurred when we changed course, and it was the only time that I really feared for our survival).

At this period of the storm, the barometer was falling rapidly. The sky was leaden gray and except for dark, indistinct scud, no individual clouds were discernible. The high winds whipped rain and spray along the surface of the dark grayish sea, streaking it with white marbling. On the bridge of the ’55, the men on watch wore oilskins and sou’westers. Rain water poured over them and salt spray whipped their faces. They braced themselves against the vessel’s roll and occasionally lost balance and sprawled on the slippery deck.

The helmsman’s job was particularly difficult. His problem was to keep the vessel’s head up—to keep her out of the trough, intensified because he had to keep himself standing and at the same time fight the wheel.

We continued to keep the storm on our starboard quarter, changing course to the left as the winds changed. In the northern hemisphere, such storms rotate counterclockwise around a nucleus which moves at a speed of advance of 9 to 15 knots. This storm, with a radius of two hundred miles, passed about one hundred miles to the eastward of Okinawa, so that the island received the brunt of the typhoon. Our object was to get south of the storm and ride away from it, and we succeeded. By the time that we reached point B, the storm center had reached point A and the barometer was on the rise again. The “Storm Course” line on the diagram shows the path of the storm center and around that, for a radius of two hundred miles, the typhoon raged, rotating in a counter-clockwise direction.

When the typhoon had abated sufficiently, we headed back for Buckner Bay, 100 miles distant. We arrived Tuesday morning and learned that fifty ships had been lost. Ships of all descriptions are on the beaches. We hear that the loss of life from personnel who abandoned ship was very heavy. SC’s, LST’s, Liberty ships and other cargo ships are visible from here, high and dry.

To add to the account as recorded in the diary, I remember that after we were clear of the island but still within voice range of the harbor radio circuit, the traffic was incredible. Ships were calling for assistance (one PC was asking permission of the Port Director to abandon ship).

A YMS, whose CO was a friend of mine, left port at the same time we did. She failed to return and as far as I know, no wreckage was ever found. There was the tale of one PC which lost her mooring, was blown against a service force vessel, damaging the PC’s depth charge racks, allowing the depth charges to roll off under the other vessel. The charges were not set on “Safe” and blew a large hole in the other.vessel’s hull, taking her to the bottom. Some of the crew of one SC were reputed to have tried to abandon ship in a life raft and were drowned. I’m sure you remember the sacks of mail which we picked up on our return to Buckner Bay, which we found to be a mass of paper mache when opened. The post office had been blown away.

The tropical storm YMS-70 was foundered in also has significant documentation. The storm came as troops were preparing for an invasion of Leyte Island. October 17th included preparatory sweeping operations, in advance of the october 20th landing. Read the full report.

Tropical Storm of 14 to 17 October, 1944 in Leyte Gulf, ahead of invasion on 20th

Tropical Storm of 14 to 17 October, 1944 in Leyte Gulf, ahead of invasion on 20th