Hello I have a question I was looking at a next build and found that listed in Janes , that the Idaho had gooten a rebuild with new machinery and modernisation. ANd supposedly her speed was increased to 22.6 to 23 knots. I know Janes is not always the best but have not been able to confirn the exact new speed. Have found a alot of mentions about her refit such as new machinery, rebuilt props and some shaft work. She sailed from San Pedro on 7 September 1931 for the East Coast, entering Norfolk Navy Yard on 30 September for modernization. The earlier 3 in (76 mm) anti-aircraft guns were replaced by eight 5 in (130 mm)/25 cal guns.[2] The veteran battleship also received better armor, "blister" antisubmarine protection, better machinery, and tower masts during this extensive overhaul, and was readied for many more years of useful naval service. After completion on 9 October 1934, the ship conducted shakedown in the Caribbean before returning to her home port, San Pedro on 17 April 1935. Designed Speed: 21 Designed Shaft Horsepower: 32,000 Engines: Manufacturer: Parsons (NYSB) Type: Turbine Boilers: Manufacturer: BW No.: 9 Fuel (oil): Tons: 3277 Drive: TRD class. New Mexico She sailed from San Pedro 7 September 1931 for the East Coast, entering Norfolk Nary Yard 30 September for modernization. The veteran battleship received better armor, "blister" antisubmarine protection, better machinery, and tripod masts during this extensive overhaul, and was readied for many more years of useful naval service. After completion 9 October 1934 the ship conducted shakedown in the Caribbean before returning to her home port, San Pedro, 17 April 1935. This all I have been able to find for now, hope some one has some answers, I know it doesnt help much in IRWCC Or MWC but it adds up for Treaty combat. Thanks Buddy
I understand yes, the thing as I was looking through mine is that it didnt even mention the rebuild ? So that just made me wonder and I started digging to find out more. I have found out more on the refit from wedsites such wexpedia and navsource then conways that I have. Wanted to see if some one had something else. Buddy
I will dig out my Friedmans, I had checked on the Idaho's speed as rebuilt as well as the Tennessees, I do not recall the exact speed, but it was well bellow the Treaty minimum combat speed. Like most US rebuilds they gained no speed, and in general an increase in cross sectional area results in a lower top speed (bulging, or blistering if your British) I will add in most American ships that originally were coal fired, but refitted as oil (texas, Floridas, wyomings) did not gain speed, but with their bulging had a better hull coefficient for cruising speeds, and had increased overall range which was beyond the benefits just from conversion to oil burning, for example the Floridas range after bulging had increased to over 14,000 nm.
New Mexico class 1918 31,197 SHP for 21.08 knots 32000 tons std 33,000 tons full load range 5120 nm at 12 knots New Mexico class 1933 44,044 SHP for 21.8 knots 35,000 tons std 40,000 tons full load (designed as refitted for 21 knots) 12,750 nm at 18 knots their you go Buddy, No American battleship before the design of the BB-49 was intended to reach 23 knots, the first battleship America commissioned which exceeded the minimum Treaty warship speed was the North Carolinas...
