From an alternate universe, where the Kingdom of Tet Satou exists on an archipelago roughly the size of the Philippines, located in the general vicinity of the (real-world) Carolines and Gilberts; the nation rapidly industrialized following Commodore Perry's opening of Japan in 1854 and began building up a small, but powerful navy to deter any future attempts at imperialism or colonialism, initially by the Western powers:
"When the Empire of Japan announced its intentions to withdraw from the Treaty system effective with the expiration of the First London Treaty, it occasioned the first truly serious consideration of building new capital ships since the Protector-class battleships and Alacrity-class battlecruisers of 1919. Though both were considered likely to be effective against all known threats, the idea of Japan restarting the building race forced the TS Navy to start building more modern capital ships lest the Japanese be able to overwhelm them with numbers; after all, beyond the three Protectors and three Alacrities, the TSN's capital fleet consisted of the three elderly Vigilant-class semi-dreadnoughts of 1906, which had been converted for coastal warfare, and the three antediluvian Stalwart-class pre-dreadnoughts of 1896, still held in reserve....
"The requirements were daunting--the ships would have to be at least as fast as Alacrity had been, while at least as heavily armed as Protector, plus they had to have much more in the way of anti-aircraft armament while also being protected against the new heavy shell Japan had introduced for the Nagato-class battleships. (In a failure shared with the United States, the TS Navy's intelligence department believed that future Japanese battleships would be armed with the 16.1"/45 gun developed for the Nagatos and be in the 45,000 ton range; nothing comparable to the actual Yamato class was ever considered.) Moreover, the ships would be required to meet these figures without exceeding the limits of the Second London Naval Treaty; while the Kingdom had never been a party to any of the Naval Treaties, it was felt that failing to abide by Treaty limitations would be politically unacceptable for a nation that still had to source its capital ship-scale guns and armor from overseas....
"Finally, though, when news came at the start of April [1938] that the United States, Britain, and France had elected to invoke the tonnage escalator clause of the Second London Treaty. The extra ten thousand tons now permissible resolved the issue of combining high speed, heavy armor, and the full twelve-gun armament in a single hull; the VII series of designs, originally scuttled by the displacement limit, were now looking quite attractive. VII-B, in particular, seemed a very viable candidate, with the compact three-turret main battery arrangement and an immune zone against Nagato's new shells estimated at 14,500 yards, with immunity between 20,000 and 34,500 yards....
"While the US Navy initially resisted the TS Navy's approaches, a sufficient financial inducement finally persuaded the US BuOrd to complete design and testing work on both the 14"/50 Mark B gun and the four-gun turret originally intended for the US North Carolina-class battleships, so long as construction of the guns would not have to be done by the US Naval Gun Factory; the guns, instead, were constructed entirely by Bethlehem. (Early US Navy efforts to persuade the TS Navy to instead adopt the 16"/45 Mark 6 gun used in both the North Carolina and South Dakota classes were rebuffed on logistical grounds; the TSN had spent a large amount of scarce funding to build a factory for domestic production of 14" ammunition just a few years before, and was uninterested in returning to being dependent on purchasing ammunition from American suppliers.) Not having to significantly alter the VII-B design allowed for time to be saved, and the three hulls were laid down at the TS Naval Shipyard in November of 1938, with delivery expected in the first half of 1942...."
--Quoted from Battleships of the Kingdom of Tet Satou, by Norman Friedman
![[ img ]](https://i.imgur.com/TpWU4pM.png)
Sentinel, Security, Selfless, Tet Satou Treaty fast battleship laid down 1938 (Engine 1942)
Displacement:
41,721 t light; 44,340 t standard; 47,592 t normal; 50,194 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(725.39 ft / 700.00 ft) x 120.00 ft x (30.00 / 31.37 ft)
(221.10 m / 213.36 m) x 36.58 m x (9.14 / 9.56 m)
Armament:
12 - 14.00" / 356 mm 50.0 cal guns - 1,500.00lbs / 680.39kg shells, 135 per gun
Breech loading guns in turret on barbette mounts, 1937 Model
3 x 4-gun mounts on centreline ends, majority forward
1 raised mount - superfiring
20 - 5.00" / 127 mm 38.0 cal guns - 55.18lbs / 25.03kg shells, 450 per gun
Dual purpose guns in deck and hoist mounts, 1932 Model
8 x Twin mounts on sides, evenly spread
4 raised mounts
1 x Twin mount on centreline forward
1 double raised mount
1 x Twin mount on centreline aft
1 raised mount
16 - 1.57" / 40.0 mm 56.3 cal guns - 1.99lbs / 0.90kg shells, 2,000 per gun
Anti-air guns in deck mounts, 1934 Model
4 x Quad mounts on side ends, evenly spread
8 - 0.79" / 20.0 mm 70.0 cal guns - 0.27lbs / 0.12kg shells, 2,500 per gun
Machine guns in deck mounts, 1939 Model
8 x Single mounts on sides, evenly spread
Weight of broadside 19,140 lbs / 8,682 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13.0" / 330 mm 455.00 ft / 138.68 m 16.00 ft / 4.88 m
Ends: Unarmoured
Main Belt covers 100 % of normal length
Main Belt inclined 19.00 degrees (positive = in)
- Torpedo Bulkhead - Additional damage containing bulkheads:
4.00" / 102 mm 455.00 ft / 138.68 m 28.72 ft / 8.75 m
Beam between torpedo bulkheads 100.00 ft / 30.48 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 18.0" / 457 mm 9.50" / 241 mm 13.0" / 330 mm
2nd: 2.00" / 51 mm - 2.00" / 51 mm
5th: 2.00" / 51 mm - 2.00" / 51 mm
- Armoured deck - multiple decks:
For and Aft decks: 7.00" / 178 mm
Forecastle: 0.00" / 0 mm Quarter deck: 3.00" / 76 mm
- Conning towers: Forward 18.00" / 457 mm, Aft 0.00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 128,877 shp / 96,142 Kw = 28.00 kts
Range 10,000nm at 15.00 kts
Bunker at max displacement = 5,854 tons
Complement:
1,610 - 2,094
Cost:
£21.624 million / $86.497 million
Distribution of weights at normal displacement:
Armament: 4,268 tons, 9.0 %
- Guns: 4,268 tons, 9.0 %
Armour: 17,464 tons, 36.7 %
- Belts: 4,246 tons, 8.9 %
- Torpedo bulkhead: 1,934 tons, 4.1 %
- Armament: 3,341 tons, 7.0 %
- Armour Deck: 7,434 tons, 15.6 %
- Conning Tower: 509 tons, 1.1 %
Machinery: 3,367 tons, 7.1 %
Hull, fittings & equipment: 15,873 tons, 33.4 %
Fuel, ammunition & stores: 5,871 tons, 12.3 %
Miscellaneous weights: 750 tons, 1.6 %
- Above deck: 750 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
85,545 lbs / 38,803 Kg = 62.4 x 14.0 " / 356 mm shells or 16.7 torpedoes
Stability (Unstable if below 1.00): 1.30
Metacentric height 10.5 ft / 3.2 m
Roll period: 15.5 seconds
Steadiness - As gun platform (Average = 50 %): 52 %
- Recoil effect (Restricted arc if above 1.00): 0.39
Seaboat quality (Average = 1.00): 1.04
Hull form characteristics:
Hull has a flush deck,
a straight bulbous bow and small transom stern
Block coefficient (normal/deep): 0.661 / 0.667
Length to Beam Ratio: 5.83 : 1
'Natural speed' for length: 28.84 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 10.00 ft / 3.05 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 33.00 ft / 10.06 m, 27.00 ft / 8.23 m
- Forward deck: 30.00 %, 27.00 ft / 8.23 m, 22.00 ft / 6.71 m
- Aft deck: 35.00 %, 22.00 ft / 6.71 m, 22.00 ft / 6.71 m
- Quarter deck: 15.00 %, 22.00 ft / 6.71 m, 24.00 ft / 7.32 m
- Average freeboard: 24.38 ft / 7.43 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 73.0 %
- Above water (accommodation/working, high = better): 182.7 %
Waterplane Area: 66,696 Square feet or 6,196 Square metres
Displacement factor (Displacement / loading): 110 %
Structure weight / hull surface area: 208 lbs/sq ft or 1,018 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.59
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Excellent accommodation and workspace room
(Also... hi, guys! First time posting on the forum, though those on the Discord will probably recognize me from having been doing ships over there for probably six months or so now. Thanks go to everyone over there who beat me over the head with the flaws of those earlier ships--hopefully, I've now got the art failures out of the way and just have it down to stuff that could be seen as in-universe design errors to be rectified in the next class of ships...)
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