Catalog (click here)
Set contains 2 directors.
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© Model Monkey Book and Hobby. This 3D-printed item may not be copied or recast.
This highly detailed, properly asymmetrical, and accurate set of four Royal Navy Mark IVGB HACS Directors is meant to compliment models of British battleships HMS Prince of Wales, HMS King George V, late HMS Queen Elizabeth and HMS Valiant, and the battlecruiser HMS Renown. It may be suitable for other ships that carried HACS Mk.IV directors such as HMS Sirius.
This covered top Mk.IVGB version was normally fitted above with Type 285 Radars (not included - please use your favorite photo-etch radars or the kit's plastic radar parts).
Notice: these directors are available in two types of 3D-printed material, "Strong and Flexible", a kind of nylon, and "Frosted Detail", a kind of acrylic. There are distinct advantages and disadvantages to each. Strong and Flexible is very economical and resistant to rough handling, perfect for radio control models. However, being nylon, it shows more striations (print lines) that are very difficult to smooth, do not sand or cut easily, and paints specifically meant for nylon are recommended. Because of these characteristics, customers are generally unhappy with this material for static display models where smoother surfaces are important. For smoother surfaces, choose one of the "Frosted Detail" acrylic plastics instead.
From Wikipedia: "High Angle Control System (HACS) was a British anti-aircraft fire-control system employed by the Royal Navy from 1931 onwards and used widely during World War II. HACS calculated the necessary deflection required to place an explosive shell in the location of a target flying at a known height, bearing and speed.
"Demonstrating the RN's rapid strides in naval AA gunnery, in May 1941, HMS Prince of Wales went to sea with HACS IVGB, with full radar ranging systems, and no less than 9 AA associated fire control radars: four Radar Type 285, one on each High Angle Director Tower (HADT) and four Radar Type 282, one on each Mk IV QF 2 pdr "pom pom"; director, and a long range Radar Type 281 Warning Air (WA) radar which also had precision ranging panels for aerial and surface targets. This placed HMS Prince of Wales in the forefront of naval HA AA fire control systems at that time. In August and September 1941, HMS Prince of Wales demonstrated excellent long range radar directed AA fire during Operation Halberd. However, although the shortcomings of HACS are often blamed for the loss of Force Z, the failure of the anti-aircraft gunnery on intercepting the Japanese bombers were due to bizarre circumstances. The HACS was originally designed on Atlantic conditions on mind, not the tropics, and by December 1941, Prince of Wales's AA FC radars had become unserviceable due to the extreme heat and humidity in Malayan waters and her 2 pdr ammunition had deteriorated badly as well."