[SIZE=3]S-114 Class Paratraataa[/SIZE]
(Note: Specs revised 30/8/05)
The G-113 class of destroyers were scheduled for replacement during 1927-1929. Originally they were to be scrapped, but on further review it was determined that a rebuild into long-range escorts would be both feasible and economic.
The old 8.8 cm guns were landed, with a third 10.5 cm gun replacing one of them. Miscellaneous weight was increased to add depth charge capacity, and the four small torpedo tubes were swapped for three larger tubes in a single carriage. A smaller but much newer powerplant was installed, and the range was increased to 12,000 nautical miles. The continued presence of torpedoes does require that these ships be restricted by the Cleito Treaty, and for this purpose, they can be classified as Coastal Defence Ships, rather than destroyers.
Note that while the class was designated the G-113 class while in service as destroyers, the lead unit was lost in the Andaman War of 1916/7. Hence, after the conversion, the class is re-named for the oldest survivor, S-114.
Pudukkottai, S-114 (ex-G-114), rebuilt 1927, scrapped 1941
Gadag, S-115 (ex-G-115), rebuilt 1927, scrapped 1941
Udupi, S-116 (ex-G-116), rebuilt 1928, scrapped 1941
Kasaragod, S-117 (ex-G-117), rebuilt 1928, scrapped 1941
Wanparti, S-118 (ex-G-11
, rebuilt 1928, scrapped 1941
Adoni, S-119 (ex-G-119), rebuilt 1928, scrapped 1941
S-114, laid down 1927
Length, 96.0 m x Beam, 9.1 m x Depth, 2.7 m
1094 tonnes normal displacement (835 tonnes standard)
Main battery: 3 x 10.5-cm
Secondary battery: 4 x 3.5-cm
AA battery: 4 x 1.5-cm
Weight of broadside: 51 kg
3 TT, 55.0 cm
Hull unarmored
Conning tower, 5.0 cm
Battery armor:
Main, 3.0 cm shields / secondary, 2.0 cm shields
AA, 2.0 cm shields
Maximum speed for 5996 shaft kw = 23.68 knots
Approximate cruising radius, 12000 nm / 12 knots
Typical complement: 95-124
Estimated cost, $1.096 million (£274,000)
Remarks:
Ship has slow, easy roll; a good, steady gun platform.
Excellent seaboat; comfortable and able to fight her guns
in the heaviest weather.
Distribution of weights:
Percent
normal
displacement:
Armament ......................... 14 tonnes = 1 pct
Armor, total ..................... 10 tonnes = 1 pct
C.T. 4 tonnes = 0 pct
Armament 6 tonnes = 1 pct
Machinery ........................ 254 tonnes = 23 pct
Hull and fittings; equipment ..... 506 tonnes = 46 pct
Fuel, ammunition, stores ......... 290 tonnes = 26 pct
Miscellaneous weights ............ 20 tonnes = 2 pct
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1094 tonnes = 100 pct
Estimated metacentric height, 0.3 m
Displacement summary:
Light ship: 804 tonnes
Standard displacement: 835 tonnes
Normal service: 1094 tonnes
Full load: 1296 tonnes
Loading submergence 519 tonnes/metre
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Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.19
Shellfire needed to sink: 909 kg = 56.6 x 10.5-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)
Torpedoes needed to sink: 0.8
(Approximates number of 'typical'
torpedo hits needed to sink ship)
Relative steadiness as gun platform, 100 percent
(50 percent is 'average')
Relative rocking effect from firing to beam, 0.22
Relative quality as a seaboat: 2.00
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Hull form characteristics:
Block coefficient: 0.45
Sharpness coefficient: 0.31
Hull speed coefficient 'M' = 9.34
'Natural speed' for length = 17.7 knots
Power going to wave formation
at top speed: 52 percent
Estimated hull characteristics and strength:
Relative underwater volume absorbed by
magazines and engineering spaces: 88 percent
Relative accommodation and working space: 114 percent
Displacement factor: 168 percent
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.96
(Structure weight per square
metre of hull surface: 241 kg)
Relative longitudinal hull strength: 1.95
(for 4.10 m average freeboard;
freeboard adjustment +1.13 m)
Relative composite hull strength: 1.03
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[Machine-readable parameters: Spring Style v. 1.2.1]
315.00 x 30.00 x 9.00; 13.45 -- Dimensions
0.45 -- Block coefficient
1927 -- Year laid down
23.68 / 12000 / 12.00; Oil-fired turbine or equivalent -- Speed / radius / cruise
20 tons -- Miscellaneous weights
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3 x 4.13; 0 -- Main battery; turrets
Central positioning of guns
Gun-shields
:
4 x 1.38; 0 -- Secondary battery; turrets
Gun-shields
:
4 x 0.59 -- Tertiary (QF/AA) battery
Gun-shields
:
0 -- No fourth (light) battery
3 / 0 / 21.65 -- TT / submerged / size
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0.00 -- No belt armor
0.00 / 1.97 -- Deck / CT
1.18 / 0.79 / 0.79 / 0.00 -- Battery armor
(Note: For portability, values are stored in Anglo-American units)
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