[2] During the war, there were many cases where radar tracking could not catch up with the attacking aircraft incoming at high speed.

[1] Mk.68 GFCS was the standard for the Mark 42 5"/54 cal gun, but this machine was also used as a secondary directional board.

[citation needed] The Japan Maritime Self-Defense Force requested the equipment of this model with the Harukaze-class destroyer, which was the first domestic escort ship after the war, but it was not approved by the US side, and the actual equipment was in the Second Defense Build-up Plan.

The Type 904 radar tracker was also developed as a derivative of the GWS.22 Seacat air defense missile system.

[4] In addition, the Mk.64 GUNAR, which changed the shooting command radar to the gun side equipment (initially the same AN/SPG-34 as the Mk.63, later AN/SPG-48), was also developed, and this was mainly used by the Royal Canadian Navy.