Scale: 1/350

Set includes 3 turrets with trunnions.  No barrels.

Recommended for:

  • Academy 1/350 scale USS Indianapolis CA-35
  • Iron Shipwrights 1/350 scale USS Indianapolis CA-35 (1945)
  • Trumpeter 1/350 scale USS Indianapolis CA-35 (1944)
  • Trumpeter 1/350 scale USS Indianapolis CA-35 (1945)
  • Yankee Modelworks 1/350 scale USS Indianapolis CA-35 (1945)
  • and more!

A set of triple-gun turrets with detailing specific to sistership USS Portland CA-33 is available separately.


A set of twin-gun and triple-gun 8"/55 cal. turrets is available separately for Iron Shipwright's 1/350 scale USS Salt Lake City CA-25.  Likewise, a set of turrets for Northampton class heavy cruisers is available separately.


  • overall dimensions precisely scaled from US Navy O.P.1112 (2nd Rev.) "Gun Mount and Turret Catalog" drawings dated 15 January 1945
  • rain deflector and bolt-head detail specific to USS Indianapolis CA-35
  • accurately shaped armored rangefinder hoods
  • detailed crew access doors with hinge detail
  • hex-head exterior bolts properly positioned, sized and correctly placed according to photos of the actual turrets
  • separate trunnion, slotted for your favorite brass barrels (not included) to allow you to position the guns to any realistic elevation from -5 degrees to +40 degress just like the real turret


These turrets are not suitable for USS New Orleans CA-32 or USS Astoria CA-34 or the other members of the New Orleans class. They had a differently shaped triple-gun turret.

These 250-ton turrets carried three Mk.9 guns, later upgraded to Mk.14 guns.  Please use your favorite brass barrels or your kit's parts.

Model Monkey USS Portland CA-33 (1942) conversion parts:

  • 1/350 USS Portland CA-33 Upper Forward Superstructure, 1942
  • 1/350 USS Portland CA-33 Lower Forward Superstructure, 1942
  • 1/350 USS Portland CA-33 Forward Funnel and Aircraft Handling Deck, 1942
  • 1/350 USS Portland CA-33 Aft Funnel and Upper Anti-Aircraft Deck, 1942
  • 1/350 USS Portland CA-33 Lower Anti-Aircraft Deck, 1942
  • 1/350 USS Portland CA-33 Aft Superstructure, 1942
  • 1/350 USS Portland CA-33 Aft Oerlikon Gun Tubs, 1942
  • 1/350 8"/55 cal. Turrets - for USS Portland CA-33

© Model Monkey LLC.  This 3D-printed product may not be copied or recast.

From Wikipedia: "The 8"/55 caliber gun (spoken "eight-inch-fifty-five-caliber") formed the main battery of United States Navy heavy cruisers and two early aircraft carriers. United States naval gun terminology indicates the gun barrel had an internal diameter of 8 inches (203 mm), and the barrel was 55 calibers long (barrel length is 8 inch × 55 = 440 inches or 11 meters).

"Mark 9: These built-up guns weighed about 30 tons including a liner, tube, jacket, and five hoops. A down-swing Welin breech block was closed by compressed air from the gas ejector system. Loading with two silk bags each containing 45-pounds (20 kg) of smokeless powder gave a 260-pound (120 kg) projectile a velocity of 2800 feet per second (850 m/s).[1] Range was 31,860 yd (29,130 m) at the maximum elevation of 41 degrees.

"Mark 14: These guns were similar to Mark 9, with the same shell weight and maximum range, with a smaller chamber and rifling twist increased from 1 in 35 to 1 in 25 in a chromium-plated bore."

1/350 USS Indianapolis CA-35 8"/55 cal. Turrets with Trunnions

SKU: 350-CA35-turrets-trunnions-3