Here is the two possible PB2Y candidates:
date: 440914 | PB2Y-3 | 7068 |assigned RES SQ-1 FAW-2 from NAS Kaneohe Bay
pilot Harkness, Leonard L. | location Marshall Islands, Kwajalein Atoll, Ebeye Island
date: 450212 | PB2Y-5R | 7075 | assigned to VR-2 from NAS Alameda
pilot: Parker, William R. Jr. |location Marshall Islands, Kwajalein
Atoll, seaplane area
Both strike level accidents with fatalities. A diving website mentions the
nose of a Coronado near Eyebe Island being a dive destination.