Boatswain's Mate Second Class Owen Francis patrick Hammerberg was a sailor in the U.S. Navy who was awarded the Medal of Honor posthumously for his actions on February 17, 1945 at Pearl Harbor, Hawaii Territory during World War II. Hammerberg was 24 years old.
Hammerberg was killed in the action for which his medal was awarded. One other service member also received the Medal of Honor for actions on the same day. The medal was presented on February 16, 1946. Grossile, Michigan at Grosse Ile Naval Air Station presented to his Father and Mother (Jonas Hammerberg and Elizabeth Moss) (divorced) presented by Captain G. R. Fairbanks.
Hammerberg was born on May 31, 1920 in Daggett, Menominee County, Michigan. His Medal of Honor is credited to Michigan. He is buried at Holy Sepulchre Cemetery in Southfield, Michigan.
Hammerberg is one of 474 Medal of Honor recipients from World War II and one of 112 credited to Michigan.
Official Medal of Honor citation
For conspicuous gallantry and intrepidity at risk of his life above and beyond the call of duty as a diver engaged in rescue operations at West Loch, Pearl Harbor, 17 February 1945. Aware of the danger when two fellow divers were hopelessly trapped in a cave-in of steel wreckage while tunneling with jet nozzles under an LST sunk in 40 feet of water and 20 feet of mud, Hammerberg unhesitatingly went overboard in a valiant attempt to effect their rescue despite the certain hazard of additional cave-ins and the risk of fouling his lifeline on jagged pieces of steel imbedded in the shifting mud. Washing a passage through the original excavation, he reached the first of the trapped men, freed him from the wreckage, and, working desperately in pitch-black darkness, finally effected his release from fouled lines, thereby enabling him to reach the surface. Wearied but undaunted after several hours of arduous labor, Hammerberg resolved to continue his struggle to wash through the oozing submarine, subterranean mud in a determined effort to save the second diver. Venturing still farther under the buried hulk, he held tenaciously to his purpose, reaching a place immediately above the other man just as another cave-in occurred and a heavy piece of steel pinned him crosswise over his shipmate in a position which protected the man beneath from further injury while placing the full brunt of terrific presure on himself. Although he succumbed in agony 18 hours after he had gone to the aid of his fellow divers, Hammerberg, by his cool judgment, unfaltering professional skill, and consistent disregard of all personal danger in the face of tremendous odds, had contributed effectively to the saving of his two comrades. His heroic spirit of self-sacrifice throughout enhanced and sustained the highest traditions of the U.S. Naval Service. He gallantly gave his life in the service of his country.
Citation text: U.S. Government, public domain.
Wounds and death in action
- Killed in action during the act for which the medal was awarded (February 17, 1945).
- Age at death: 24
- Resting place: Holy Sepulchre Cemetery
Battles and campaigns
Also served in: World War II.
Places
Veteran resources, cemeteries and meeting places in Michigan →
Timeline
- May 31, 1920Born in Daggett, Menominee County, Michigan
- February 17, 1945Act of valor — Pearl Harbor, Hawaii TerritoryAge 24. Killed in action.
- February 16, 1946Medal of Honor presented posthumouslyGrossile, Michigan at Grosse Ile Naval Air Station presented to his Father and Mother (Jonas Hammerberg and Elizabeth Moss) (divorced) presented by Captain G. R. Fairbanks
- Resting placeHoly Sepulchre CemeterySouthfield, Michigan
Biography
Owen Francis Patrick Hammerberg (May 31, 1920 – February 17, 1945) was a United States Navy diver who received the Medal of Honor posthumously for rescuing two fellow divers.
From the Wikipedia article “Francis P. Hammerberg”, licensed under CC BY-SA 4.0. Read the full article →




