Navy memo orders review of fleet operations, incidents at sea in the wake of deadly collision

— -- The vice chief of naval operations has issued additional guidance for the review of the Navy's operations, following another deadly collision in the Pacific.

In a memorandum dated Aug. 24, Adm. William Moran directed the commander of U.S. Fleet Forces Command to "lead a Comprehensive Review of surface fleet operations and incidents at sea that have occurred over the past decade with emphasis on [7th] Fleet operational employment to inform improvements Navy-wide."

On Monday local time, 7th Fleet's guided-missile destroyer the USS John S. McCain collided with a Liberian-flagged oil tanker east of Singapore. In the days following the incident, two sailors' remains have been identified, as the search continues inside the ship for the eight sailors still missing.

In June, another destroyer from the 7th Fleet, the USS Fitzgerald, collided with a Philippine-flagged container ship off the coast of Japan, killing seven sailors who could not escape flooded areas inside the ship.

Thursday's memo detailed two other incidents with 7th Fleet ships in the past year, including the USS Champlain hitting a South Korean fishing boat in May and the USS Antietam running aground in Tokyo Bay in January.

Moran has ordered the review, which was announced by the Chief of Naval Operations Adm. John Richardson earlier this week, completed within 60 days.

ABC News' Luis Martinez contributed to this report.