Scale: 1/301
 
Set includes 2 directors.
 
Recommended for:
Revell 1/301 scale USS Fletcher
Revell 1/301 scale USS The Sullivans
Revell 1/301 scale USS Radford DD-446
Revell 1/301 scale Zerstörer Z1
 
This set of models represents the US Navy's Mark 37 "square-back" Fire Control Director as configured to carry Mk.12/Mk.22 radar antennas.  This director featured two small boxy extensions on the rear of the director to accommodate radar equipment.  This Mk.37 director configuration appeared on ships built from about late 1941 through 1944.
 
The US Navy Mark 37 Director was used to control the fire of the 5”/38 caliber dual purpose batteries against both aircraft and surface targets, to direct the fire of starshells for the illumination of surface targets and to position the searchlights.

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Mk.37 directors were commonly installed on many classes of US Navy and US Coast Guard ships during World War II through the Cold War. Here is a brief summary of Mk.37 directors from noted naval historian and researcher Rick E. Davis:
 
Mk.37 "Square-Back" director for Mk.12/22 radar (this pair of models): these are the same directors as above with two extension boxes added to the back to house the electronics of the new radars. As an aside, the Mk 12 radar was available and installed without the Mk 22 radar on a few destroyers in mid-1944. Most of those destroyers had the Mk 22 installed before going to the war zone however during post-shakedown availabilities.
 
Mk.37 "Square-Back" director for Mk.12/22 radar, with commander's cockpit (available separately): the commander's cockpit was added as a mod to existing and new directors starting in early 1945. Several of the Anti-Kamikaze Mod FLETCHER’s got the cockpit. But, oddly, not all destroyers got the cockpits. Reports indicate that many gun director captains didn’t like it (too hot in the South Pacific). It is believed that the cockpit-equipped directors are more common on the GEARING class.