Assigned to the Kure Guard Unit. Transferred to Saeki for training and working up. Reassigned to the Yokosuka Naval District. Departs Saeki for Yokosuka. CD is reassigned as the training ship for senior students of the Yokosuka Gunnery School. The Imperial Family's sixteen-petal chrysanthemum flag is raised over CD to mark the presence of the prince.
April Tokyo. Dry-docked at Uraga dockyard for maintenance and modernization. A Type 13 air-search radar is installed. After testing and training of the device, CD departs for Yokosuka where the ship is fitted with mine laying equipment. E 14 May Uraga. Later, CD sends a cutter and recovers the drop tank of the fighter. While anchoring at Kurihama near Yokosuka , CD's rudder malfunctions. Shipyard workers are dispatched to assist in repairs.
After finishing the repairs the kaibokan heads out to Kujukurigahama area to test her sonar gear. Later, CD conducts sounding and measurements in the Kujyu-Kurihama area where American invasion landings are expected. During the forenoon all mines are sown and the unit heads back, when several air alarms are received. CD heads towards Yokosuka at flank speed. A gasoline fire breaks out but is quickly subdued. Leakage resulting from strafing damage to the hull is contained, using hand pumps.
The flaming boat is jettisoned overboard. Later that day the CD arrives at Kurihama where all wounded personnel are disembarked. CD heads for Uraga to be dry-docked. Departs Uraga on her first repatriation voyage. Embarks troops and passengers to be repatriated.
