HONOLULU ? For 60 years, Nancy Kenney wondered what happened to her father.

The submarine that William T. Mabin was in disappeared while he and his crewmates were on a mission to attack a Japanese convoy in the last months of World War II.

Now, the Navy says a wreck found at the bottom of the Gulf of Thailand appears to be the sub, the USS Lagarto.

“I have never in my life, unequivocally, felt such a high,” said Kenney, who was 2 years old when her father and the submarine did not return from their mission in May 1945.

“We can just feel a sense of relief and a sense of peace in knowing what happened and where they are,” said Kenney, of Lake Leelanau, Mich.

Eighty-six sailors died when the Lagarto sank in May 1945. The Japanese minelayer Hatsutaka reported dropping depth charges and sinking a U.S. sub in the area, though it was never known what ship it destroyed.