Maximum battleship
 | This article contains close paraphrasing of a non-free copyrighted source, http://myplace.frontier.com/~wellsbrothers/Battleships/TillmanBB.html (Copyvios report). (January 2022) |
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The "Maximum Battleships", also known as the "Tillman Battleships", were a series of World War I-era design studies for extremely large battleships, prepared in late 1916 and early 1917 upon the order of Senator "Pitchfork" Benjamin Tillman[1] by the Bureau of Construction and Repair (C&R) of the United States Navy.[2] The Navy was not interested in the designs and drew them up to win support from the Committee on Naval Affairs, on which Tillman sat. Nevertheless, they helped influence design work on the Pennsylvania and first South Dakota classes of battleships. The plans prepared for the senator were preserved by C&R in the first of its "Spring Styles" books, where it kept various warship designs conceptualized between 1911 and 1925.
Context
During the years leading up to World War I, some members of the U.S. Congress were growing frustrated with what they perceived to be chronic overspending by the U.S. Navy on battleships.[3] Senator Tillman had grown impatient with the U.S. Navy's requests for larger battleships every year as well as the Navy's habit of building battleships significantly larger than Congress authorized.[citation needed] He accordingly instructed the Navy to design "maximum battleships", the largest battleships that they could use.
The only limits on the potential size of an American battleship were the dimensions of the locks of the Panama Canal. The locks measure roughly 1,000 by 110 feet (305 m × 34 m), and so the "maximum battleships" were 975 by 108 feet (297 m × 33 m). The Panamax draft limit during the designing of these battleships was 39 feet 6 inches (12.04 m), however the Department of the Navy required that all designs be limited to only 34 feet (10 m) in draft.[2]
Designs
Tillman's first request for designs of so-called "maximum battleship" in 1912–1913 led to several estimates for battleships unconstrained by cost. Created by the US Navy Bureau of Construction and Repair (C&R), these ships would displace up to 38,000 long tons (39,000 t) and carry 14 inch guns. Although C&R was "appalled," in the words of naval historian Norman Friedman, by the extravagance of these designs, they admitted that far larger warships could transit Panama Canal's locks, which due to the US' geography was often held to be the final limiting factor on the size of a US warship. Such larger designs would be often and seriously proposed within only a few years.[4]
In 1916, Tillman repeated his request, and C&R produced another series of design studies. C&R drew up four blueprints, all ships having varying characteristics despite being built on the same hull:
- Tillman I - Armed with 12 16-inch guns in four superfiring triple-turrets (two at the bow, two at the stern), with a considerable 18-inch thick armor belt and a speed of 26.5 knots.
- Tillman II - Armed with 24 16-inch guns in four superfiring turrets in the same layout as "Tillman (I)", but with 6 guns in each turret. Her speed was kept the same so the weight for the additional guns was gained by reducing the thickness of the armor belt.
- Tillman III - A return to the armament of "Tillman (I)", with the reduced armor of "Tillman (II)" and an increased speed of 30 knots on displacement of 63,500 tons.
- Tillman IV - Using the sextuple-turrets and layout of "Tillman (II)", Tillman IV retained the 18-inch belt of "Tillman (I)" in exchange for the dropping of speed to 25.2 knots, all with an increase in displacement to 80,000 tons.
After the first four design studies were complete, Design IV was chosen for further development and three additional studies. Based upon Design IV, three additional designs were prepared: IV-1, IV-2, and IV-3. At the request of Secretary of the Navy Josephus Daniels[citation needed], these designs used 18-inch (460 mm) guns instead of the 16-inch (410 mm) 50-caliber guns used in the earlier studies. The navy decided that design IV-2 was the most practical (or perhaps the least impractical) and presented it to Congress early in 1917.
Comparisons to other US Navy Battleships
These designs differed from the battleships being built in two significant ways beyond just their size. Firstly, unlike preceding classes, the "maximum battleships" were designed with a continuous flush main deck. Most battleships in this era had a long forecastle deck. Secondly, the Tillman designs all included five casemate guns mounted aft, two on each side and one at the tip of the stern. Similar "stern chasers" had been previously mounted in Nevada, but were omitted from the Pennsylvania class. These casemates were a return to an older design idea; American battleship designers had abandoned hull-mounted casemates after the New Mexico class. They had transpired to be too "wet" – heavy seas rendered them unusable—and they had been removed from all earlier classes. However, the casemates on the "maximum battleships" would have been higher above the waterline than they had been on earlier designs, so it is possible that their huge size and flush decks would have provided enough freeboard astern to keep the casemates dry.[citation needed]
| Tillman I | Tillman II | Tillman III | Tillman IV | Tillman IV-1 | Tillman IV-2 | South Dakota class | Iowa class | Montana class | |
|---|---|---|---|---|---|---|---|---|---|
| Design | 13 Dec 1916 | 13 Dec 1916 | 13 Dec 1916 | 29 Dec 1916 | 30 Jan 1917 | 30 Jan 1917 | 8 Jul 1918 | 9 Jun 1938 | 6 Feb 1940 |
| Displace- ment |
70,000 short tons (63,500 t) | 70,000 short tons (63,500 t) | 63,500 short tons (57,600 t) | 80,000 short tons (72,600 t) | 80,000 short tons (72,600 t) | 80,000 short tons (72,600 t) | 43,200 short tons (39,200 t) | 45,000 short tons (40,800 t) | 70,000 short tons (63,500 t) |
| Length | 975 feet (297 m) | 660 feet (200 m) | 860 feet (260 m) | 921 feet (281 m) | |||||
| Beam | 108 feet (33 m) | 106 feet (32 m) | 108 feet (33 m) | 121 feet (37 m) | |||||
| Draft | 32 feet 9 inches (10 m) | 32 feet 9 inches (10 m) | 36 feet (11 m) | 36 feet (11 m) | |||||
| Speed | 26.5 knots (49.1 km/h; 30.5 mph) | 26.5 knots (49.1 km/h; 30.5 mph) | 30 knots (56 km/h; 35 mph) | 25.2 knots (46.7 km/h; 29.0 mph) | 25.2 knots (46.7 km/h; 29.0 mph) | 25.2 knots (46.7 km/h; 29.0 mph) | 23.5 knots (43.5 km/h; 27.0 mph) | 33 knots (61 km/h; 38 mph) | 28 knots (52 km/h; 32 mph) |
| Main battery |
(12) 16-inch (406 mm), 50-caliber guns in four triple turrets | (24) 16-inch (406 mm), 50-caliber guns in four six-gun turrets | (12) 16-inch (406 mm), 50-caliber guns in four triple turrets | (24) 16-inch (406 mm), 50-caliber guns in four six-gun turrets | (13) 18-inch (457 mm), 50-caliber guns in five twin and one triple turret | (15) 18-inch (457 mm), 50-caliber guns in five triple turrets | (12) 16-inch (406 mm), 50-caliber guns in four triple turrets | (9) 16-inch (406 mm), 50-caliber guns in three triple turrets | (12) 16-inch (406 mm), 50-caliber guns in four triple turrets |
| Belt armor |
9–18-inch (229–457 mm) | 7–13-inch (178–330 mm) | 7–13-inch (178–330 mm) | 8–19-inch (203–483 mm) | 8–16-inch (203–406 mm) | 8–16-inch (203–406 mm) | 8–13.5-inch (203–343 mm) | 4–12.1-inch (102–307 mm) | 10.2–16.1-inch (259–409 mm) |
| Barbette armor |
5–17-inch (127–432 mm) | 4–12.5-inch (102–318 mm)} | 4–12.5-inch (102–318 mm) | 5–17-inch (127–432 mm) | 5–15-inch (127–381 mm) | 5–15-inch (127–381 mm) | 4.5–13.5-inch (114–343 mm) | 11.6–17.3-inch (295–439 mm) | 18–21.3-inch (457–541 mm) |
| Conning Tower armor |
6–18-inch (152–457 mm) | 6–16-inch (152–406 mm) | 6–16-inch (152–406 mm) | 9–18-inch (229–457 mm) | 6–18-inch (152–457 mm) | 6–18-inch (152–457 mm) | 16-inch (406 mm) | 17.3-inch (439 mm) | 18-inch (457 mm) |
Fate of the Designed Battleships
The Washington Naval Treaty of 1922 limited naval armaments, causing the cancellation of the South Dakotas and halting all consideration of the "maximum battleships."
See also
- HMS Incomparable
- Gavrilo battleship - Russian project (1914 year, 265/34,4/9,15 m, 16x406/45, 24x152/55, 30 knots)
References
- ^ Senate Congressional Record of the USA. Vol. 53. Library of Congress. 21 June 1916. p. 9680. Retrieved 14 September 2021 – via Congress.gov.
- ^ a b Zimm, A. D. (1975). "Build the Limit: The American "Maximum Battleship" Designs of 1916-17". Warship International. 12 (1). International Naval Research Organization: 31–59. JSTOR 44890389. Retrieved 14 September 2021 – via JSTOR.
- ^ Senate Congressional Record of the USA. Vol. 51. Library of Congress. 2 June 1914. p. 9638-9651. Retrieved 4 October 2021 – via Congress.gov.
- ^ Friedman, US Battleships, 148–149.
Bibliography
- Friedman, Norman. Battleship Design and Development, 1905–1945. New York: Mayflower Books, 1978. ISBN 0-8317-0700-3. OCLC 4505348.
External links
- An extensive article about the Tillman battleships, including a look at possible designs for "Tillman battlecruisers.". Retrieved 5 May 2012
- Tillman battleships entry at Global Security
- Design for 80,000-ton battleship prepared by C&R for Senator Tillman, dated 29 December 1916, from U.S. Naval Historical Center. Retrieved 5 May 2012.
- "Construction of battleships", includes the 1912 resolution
- The Shipscribe article on the Bureau of Ships' "Spring Styles" Book # 1 (1911-1925). This specific webpage publicly preserves, among other things, the "maximum battleship" designs as digital photographs from the first "Spring Styles" US Navy catalog, and describes how they were presented therein. Quoting Shipscribe's About page: "The "Spring Styles" drawings were added on 26 April 2015... following the deletion of the Online Library of Selected Images from the web site of the Naval History and Heritage Command."