WesWorld

Quoted

Ly Thuong Kiet, Indochinese Destroyer laid down 1947

Displacement:
2,550 t light; 2,765 t standard; 3,170 t normal; 3,494 t full load

Dimensions: Length overall / water x beam x draught
423.23 ft / 423.23 ft x 42.32 ft x 14.11 ft (normal load)
129.00 m / 129.00 m x 12.90 m x 4.30 m

Armament:
6 - 5.12" / 130 mm guns (3x2 guns), 79.37lbs / 36.00kg shells, 1947 Model
Automatic rapid fire guns in deck mounts with hoists
on centreline ends, majority aft, 1 raised mount aft - superfiring
4 - 1.57" / 40.0 mm guns (2x2 guns), 1.95lbs / 0.89kg shells, 1947 Model
Anti-aircraft guns in deck mounts with hoists
on centreline, all amidships, all raised mounts - superfiring
8 - 0.91" / 23.0 mm guns (4x2 guns), 0.37lbs / 0.17kg shells, 1947 Model
Machine guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
Weight of broadside 487 lbs / 221 kg
Shells per gun, main battery: 550
15 - 21.7" / 550 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.18" / 30 mm 0.79" / 20 mm 0.79" / 20 mm
2nd: 0.59" / 15 mm 0.20" / 5 mm -
3rd: 0.59" / 15 mm 0.20" / 5 mm -

- Conning tower: 1.18" / 30 mm

Machinery:
Oil fired boilers, steam turbines plus diesel motors,
Geared drive, 2 shafts, 50,589 shp / 37,740 Kw = 34.00 kts
Range 5,110nm at 18.00 kts
Bunker at max displacement = 729 tons

Complement:
210 - 274

Cost:
£2.287 million / $9.146 million

Distribution of weights at normal displacement:
Armament: 62 tons, 1.9 %
Armour: 28 tons, 0.9 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 22 tons, 0.7 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 5 tons, 0.2 %
Machinery: 1,238 tons, 39.1 %
Hull, fittings & equipment: 992 tons, 31.3 %
Fuel, ammunition & stores: 620 tons, 19.6 %
Miscellaneous weights: 230 tons, 7.3 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,264 lbs / 573 Kg = 18.9 x 5.1 " / 130 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.14
Metacentric height 1.8 ft / 0.5 m
Roll period: 13.4 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.54
Seaboat quality (Average = 1.00): 1.15

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.439
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 23.66 kts
Power going to wave formation at top speed: 65 %
Trim (Max stability = 0, Max steadiness = 100): 61
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22.97 ft / 7.00 m
- Forecastle (20 %): 22.15 ft / 6.75 m
- Mid (50 %): 21.33 ft / 6.50 m (14.44 ft / 4.40 m aft of break)
- Quarterdeck (15 %): 14.44 ft / 4.40 m
- Stern: 14.44 ft / 4.40 m
- Average freeboard: 18.23 ft / 5.56 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 152.9 %
- Above water (accommodation/working, high = better): 73.4 %
Waterplane Area: 11,762 Square feet or 1,093 Square metres
Displacement factor (Displacement / loading): 98 %
Structure weight / hull surface area: 45 lbs/sq ft or 218 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.53
- Longitudinal: 1.92
- Overall: 0.60
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform

Breakdown of Miscellaneous Weights:
- 70 tons for electronics
- 15 tons for degaussing system
- 35 tons for HVAC
- 15 tons for two LRASM Modele 1947 2x4 32cm launchers and reloads
- 40 tons for 15 550mm torpedo reloads (~2.5t each)
- 5 tons for paravanes and assorted mine-defense gear
- 50 tons for crew comfort and damage control systems

Electronics:
- DRBV-11 Moselle PA search radar (1 radar, 15 tons)
- DRBV-10 DP sentry radar (1 radar, 10 tons)
- DRBN-1 navigational surface and air search radar (1 radar, 2 tons)
- DRBC-4 DP fire-control radar (2 radars, 10 tons)
- ARBR-2 radar jammer/detector (1 unit, 2 tons)
- SAGEM HF/DF (3 tons)
- ASDIC (18 tons)
- Diesel electric generator set (5 tons)
- Gunnery Computer for 130mm and 40mm guns (5 tons)

Ships in Class:
- Ly Thuong Kiet
- Ngo Quyen
- Tran Binh Trong
- Tran Quang Khai

Quoted from "Rooijen10"

... so when did 5x5 become 15?

Quoted from "BruceDuncan"

Zero degree angle on the bow? Not necessarily ‘wrong’ but certainly old fashioned.

Quoted from "BruceDuncan"

Fifteen torpedo tubes? I presume this would three quintuple mounts on the centerline. I would consider that overkill, but if you are looking at something like a Shimakaze, it is not unreasonable – but I have to wonder if Indochina needs something that offensive. YMMV.

Quoted from "BruceDuncan"

Taken as a whole, the design seems as if it is trying to do too many things – surface combatant, sub-hunter, and fast minesweeper. It’s not my thing, and the top-weight stand a downward revision; again, YMMV.

Quoted from "Brockpaine"

Quoted from "BruceDuncan"

Taken as a whole, the design seems as if it is trying to do too many things – surface combatant, sub-hunter, and fast minesweeper. It’s not my thing, and the top-weight stand a downward revision; again, YMMV.

It's really only one thing - a surface combatant. Definitely not a minesweeper. While it can do sub-hunting, it's not really intended for that.

Quoted from "Hood"

Generally a sound design, but I wonder about the steam-diesel set up, is that for range? If so they don't seem particularly long-legged.

Quoted

Ly Thuong Kiet, Indochinese Destroyer laid down 1947

Displacement:
1,950 t light; 2,074 t standard; 2,370 t normal; 2,607 t full load

Dimensions: Length overall / water x beam x draught
409.67 ft / 393.70 ft x 36.42 ft x 14.11 ft (normal load)
124.87 m / 120.00 m x 11.10 m x 4.30 m

Armament:
4 - 3.94" / 100 mm guns in single mounts, 35.27lbs / 16.00kg shells, 1947 Model
Automatic rapid fire guns in deck mounts with hoists
on centreline ends, evenly spread, 2 raised mounts - superfiring
1 - 3.94" / 100 mm guns in single mounts, 35.27lbs / 16.00kg shells, 1947 Model
Automatic rapid fire gun in a deck mount with hoist
on centreline amidships, 1 raised gun
8 - 1.57" / 40.0 mm guns (4x2 guns), 1.95lbs / 0.89kg shells, 1947 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
4 - 0.59" / 15.0 mm guns in single mounts, 0.10lbs / 0.05kg shells, 1947 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 192 lbs / 87 kg
Shells per gun, main battery: 650
8 - 21.7" / 550 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.39" / 10 mm 0.39" / 10 mm
2nd: 0.98" / 25 mm 0.39" / 10 mm 0.39" / 10 mm
3rd: 0.59" / 15 mm 0.20" / 5 mm -

- Conning tower: 1.18" / 30 mm

Machinery:
Oil fired boilers, steam turbines plus diesel motors,
Geared drive, 2 shafts, 42,655 shp / 31,820 Kw = 34.00 kts
Range 4,400nm at 18.00 kts
Bunker at max displacement = 532 tons

Complement:
169 - 220

Cost:
£1.701 million / $6.805 million

Distribution of weights at normal displacement:
Armament: 25 tons, 1.1 %
Armour: 16 tons, 0.7 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 11 tons, 0.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 5 tons, 0.2 %
Machinery: 1,034 tons, 43.6 %
Hull, fittings & equipment: 741 tons, 31.3 %
Fuel, ammunition & stores: 420 tons, 17.7 %
Miscellaneous weights: 135 tons, 5.7 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
894 lbs / 405 Kg = 29.3 x 3.9 " / 100 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.16
Metacentric height 1.5 ft / 0.4 m
Roll period: 12.7 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.32
Seaboat quality (Average = 1.00): 1.11

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.410
Length to Beam Ratio: 10.81 : 1
'Natural speed' for length: 22.77 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 64
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.98 ft / 6.70 m
- Forecastle (15 %): 21.33 ft / 6.50 m
- Mid (30 %): 20.67 ft / 6.30 m (13.45 ft / 4.10 m aft of break)
- Quarterdeck (15 %): 13.45 ft / 4.10 m
- Stern: 13.45 ft / 4.10 m
- Average freeboard: 15.80 ft / 4.82 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 158.0 %
- Above water (accommodation/working, high = better): 92.5 %
Waterplane Area: 9,217 Square feet or 856 Square metres
Displacement factor (Displacement / loading): 96 %
Structure weight / hull surface area: 41 lbs/sq ft or 199 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.58
- Longitudinal: 1.95
- Overall: 0.65
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform

Breakdown of Miscellaneous Weights:
- 55 tons for electronics
- 15 tons for degaussing system
- 35 tons for HVAC
- 15 tons for two LRASM Modele 1947 2x4 32cm launchers and reloads
- 15 tons for additional gear

Electronics:
- DRBV-10 DP sentry radar (1 radar, 10 tons)
- DRBN-1 navigational surface and air search radar (1 radar, 2 tons)
- DRBC-4 DP fire-control radar (2 radars, 10 tons)
- ARBR-2 radar jammer/detector (1 unit, 2 tons)
- SAGEM HF/DF (3 tons)
- ASDIC (18 tons)
- Diesel electric generator set (5 tons)
- Gunnery Computer for 100mm and 40mm guns (5 tons)

Ships in Class:
- Ly Thuong Kiet
- Ngo Quyen
- Tran Binh Trong
- Tran Quang Khai