WesWorld

I'm trying to sim the Argentinian Mendoza class destroyer bought by Mexico.How does this look?

Mendoza French-built 950ton destroyer
289.5x25.25x10.25ft, 950 tons
Rateau turbines, 18,000 shp = 32 knots,
4 - 4inch, 4 - 21inch TT


Mendoza, Argentina Destroyer laid down 1919

Displacement:
821 t light; 858 t standard; 944 t normal; 1,012 t full load

Dimensions: Length overall / water x beam x draught
290.00 ft / 290.00 ft x 25.25 ft x 10.25 ft (normal load)
88.39 m / 88.39 m x 7.70 m x 3.12 m

Armament:
4 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1919 Model
Quick firing guns in deck mounts
on centreline ends, evenly spread
Weight of broadside 128 lbs / 58 kg
Shells per gun, main battery: 250
4 - 21.0" / 533.4 mm above water torpedoes

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 22,012 shp / 16,421 Kw = 32.00 kts
Range 6,000nm at 10.00 kts
Bunker at max displacement = 154 tons

Complement:
84 - 110

Cost:
£0.241 million / $0.963 million

Distribution of weights at normal displacement:
Armament: 16 tons, 1.7 %
Machinery: 487 tons, 51.6 %
Hull, fittings & equipment: 318 tons, 33.7 %
Fuel, ammunition & stores: 122 tons, 13.0 %
Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
312 lbs / 141 Kg = 9.7 x 4.0 " / 102 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.33
Metacentric height 1.0 ft / 0.3 m
Roll period: 10.4 seconds
Steadiness - As gun platform (Average = 50 %): 58 %
- Recoil effect (Restricted arc if above 1.00): 0.24
Seaboat quality (Average = 1.00): 1.02

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.440
Length to Beam Ratio: 11.49 : 1
'Natural speed' for length: 19.37 kts
Power going to wave formation at top speed: 69 %
Trim (Max stability = 0, Max steadiness = 100): 57
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: 19.00 ft / 5.79 m
- Forecastle (20 %): 12.00 ft / 3.66 m
- Mid (50 %): 12.00 ft / 3.66 m
- Quarterdeck (15 %): 12.00 ft / 3.66 m
- Stern: 12.00 ft / 3.66 m
- Average freeboard: 12.56 ft / 3.83 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 180.3 %
- Above water (accommodation/working, high = better): 81.7 %
Waterplane Area: 4,812 Square feet or 447 Square metres
Displacement factor (Displacement / loading): 56 %
Structure weight / hull surface area: 30 lbs/sq ft or 145 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.58
- Longitudinal: 2.87
- Overall: 0.68
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped

Mexico will rebuild the Mendoza class destroyer to the following, thoughts?


"El Zorro" (ex-Mendoza), Mexico (ex-Argentina) Destroyer laid down 1919 (Engine 1933)

Displacement:
1,008 t light; 1,053 t standard; 1,222 t normal; 1,357 t full load

Dimensions: Length overall / water x beam x draught
300.00 ft / 300.00 ft x 27.00 ft x 12.00 ft (normal load)
91.44 m / 91.44 m x 8.23 m x 3.66 m

Armament:
2 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1933 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread
4 - 1.85" / 47.0 mm guns (2x2 guns), 3.17lbs / 1.44kg shells, 1940 Model
Automatic rapid fire guns in deck mounts with hoists
on centreline ends, evenly spread, all raised mounts
8 - 0.50" / 12.7 mm guns (4x2 guns), 0.06lbs / 0.03kg shells, 1933 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 138 lbs / 63 kg
Shells per gun, main battery: 250
4 - 24.0" / 609.6 mm above water torpedoes

Machinery:
Oil fired boilers, steam turbines,
Electric cruising motors plus geared drives, 2 shafts, 25,553 shp / 19,063 Kw = 32.00 kts
Range 5,000nm at 15.00 kts
Bunker at max displacement = 305 tons

Complement:
103 - 134

Cost:
£0.288 million / $1.152 million

Distribution of weights at normal displacement:
Armament: 18 tons, 1.4 %
Machinery: 585 tons, 47.9 %
Hull, fittings & equipment: 355 tons, 29.1 %
Fuel, ammunition & stores: 214 tons, 17.5 %
Miscellaneous weights: 50 tons, 4.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
334 lbs / 151 Kg = 5.3 x 5.0 " / 127 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.13
Metacentric height 0.9 ft / 0.3 m
Roll period: 12.0 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.54
Seaboat quality (Average = 1.00): 1.07

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.440
Length to Beam Ratio: 11.11 : 1
'Natural speed' for length: 19.75 kts
Power going to wave formation at top speed: 69 %
Trim (Max stability = 0, Max steadiness = 100): 66
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: 21.00 ft / 6.40 m
- Forecastle (30 %): 14.00 ft / 4.27 m
- Mid (50 %): 12.00 ft / 3.66 m
- Quarterdeck (15 %): 12.00 ft / 3.66 m
- Stern: 12.00 ft / 3.66 m
- Average freeboard: 13.64 ft / 4.16 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 170.9 %
- Above water (accommodation/working, high = better): 80.3 %
Waterplane Area: 5,323 Square feet or 495 Square metres
Displacement factor (Displacement / loading): 73 %
Structure weight / hull surface area: 29 lbs/sq ft or 142 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.78
- Overall: 0.59
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

Why is the rebuilt El Zorro larger than the original SS report and larger than the original real size?

The guns look fine but I doubt the 24" torpedoes will fit. I can see why you would change the machinery though. ;0)

Quoted

Why is the rebuilt El Zorro larger than the original SS report and larger than the original real size?

Mexico probably wants to rebuild the bow, and she has become lower in the water so, she will have a greater berth at the waterline, though the free board needs adjusting

Quoted

The guns look fine but I doubt the 24" torpedoes will fit. I can see why you would change the machinery though. ;0)

The torps will fit in 2 twins

Well I dont know how accurate the original report is, it seems a bit light.

The 24" torpedoes was a last minute addition, I dont know if I'll add them, or where I'll get them. I might just go with the 21" torpedoes.

A drawing of her compared to other Mexican ships.

She will be used as a testbed for the 47mm automtic guns, and for special missions. Her quarterdeck is cleared and can be reconfigured for minelaying, minesweeping, or later on as a "human" torpedo carrier.