What kind of radar did HAIDA carry?

Originally, she had 271Q back by the emergency conning position but that was short range because it was sited low and was “wooded” (obstructed) by the forward superstructure. It could detect a surface target at nine miles, a trimmed submarine at 3,500 yards and a periscope at 900 yards. The range varied with the size of the target. HAIDA also had a type 291 radar fitted to the foremast.

In late 1944, the Type 293 air search radar was added. It was characterized by the “cheesecake” shape of the antenna. It was probably not used by the late 1950s but is mounted on the foremast as an artifact.