working conditions had been found to be very "wet". In December 1933, while she was undergoing overhaul at Bremerton, her 3-inch AA guns were increased from two to eight, all mounted in the ship's waist. The lower torpedo tube mounts, which had also proved to be very wet, were removed and the openings plated over before the start of World War II. After 1940, the lower aft 6-inch guns were removed and the casemates plated over for the same reason as the lower torpedo mounts. The ship's AA armament was first augmented by three quadruple /75 gun mounts by early 1942, however, these didn't prove reliable and were replaced by twin Bofors guns later in the war. At about the same time, she also received 14 Oerlikon cannons. Service history Inter-war period Omaha spent most of August 1923, near Puget Sound where she conducted her sea trials. On 6 October, she proceeded to Puget Sound Navy Yard to have her aircraft catapults installed. She then sailed for Mare Island Navy Yard, Vallejo, California, on 17 October, where she loaded ammunition for target practice. At the end of November and into early December 1923, Omaha conducted "Short Range Battle Practice" with the battleship before joining the Battle Fleet on 8 December. Not satisfied with s suitability as a flagship, Rear Admiral Sumner E. W. Kittelle, Commander Destroyer Squadrons, sought a replacement. Omaha was chosen by RADM Kittelle and reported at San Diego, California, 27 December 1923. She only held the post until 14 March 1924. Omaha fell into a routine of operations along the Pacific coast, Central America, and exercises in the Caribbean, with occasional trips to Pearl Harbor. In 1925, she visited Australia and New Zealand, and in 1930, she embarked member of the American Samoa Commission for their Congressional investigation of conditions at Pago Pago. In 1931, she sailed for the Caribbean where she joined in exercises from the end of March until early May. She then transferred to the Atlantic, where she participated in joint maneuvers with the US Army in Hampton Roads, at the end of May. From there she continued in maneuvers at Newport, Hampton Roads, and the Southern Drill Ground. Omaha sailed into the Boston Navy Yard at the end of October, where she remained until January when she set sail for her return to the Pacific. Once again Omaha fell into her routine of