USS Medusa report:

At approximately 08:05 the first shot was fired by the USS Medusa. The majority of planes attacking the Medusa-Curtiss sector were flying at an altitude of not over 400 feet; a few were not over 100 feet. During the attack it was reported that a submarine periscope was sighted about 1000 yards on Medusa`s starboard quarter or about 500 yards astern of the Curtiss. Fire was opened on the periscope – shortly afterward the Curtiss opened fire. The submarine fired a torpedo at a small dock astern of Curtiss. The submarine then broached to the surface with conning tower in plain sight. Many shots could plainly be seen hitting the conning tower from both the Medusa and Curtiss. About this time the Monaghan (DD-354) was seen standing down the channel west of Ford Island, she headed directly for the submarine at about 15 knots. The order cease firing was given when Monaghan was abeam of the Curtiss. She appeared to pass immediately over the submarine and dropped two depth charges. The first charge appeared to drop right on top of the submarine as the volume of water shooting into the air was heavily colored with a black substance. The second charge did not have the black coloring.

USS Curtiss report:

At 08:26 a submarine was reported in harbor. About 08:30 the Curtiss sighted conning towers of two small submarines in North Channel. The USS Monaghan proceeded down channel at high speed, appeared to ram leading submarine which had just fired a torpedo apparently at the USS Curtiss, but which missed. The Monaghan dropped two depth charges, the first directly upon the leading submarine and the second in the approximate position of the second which was no longer visible. About ten seconds later a submarine of approximately 250 ton type, came up upside down and immediately sank.

USS Breese, Light Mine Layer DM-18:

Wickes Class Destroyer/Gamble Class Light Minelayer, laid down on November 10, 1917 by the Newport News Shipbuilding and Dry Dock Corp.; commissioned USS Breese,Destroyer No.122 on October 23, 1918; redesigned a Light Mine Layer DM-18 on January 5,1931.