WesWorld

This is a compilation of the Type A and Type B destroyer types, the threads for which will be deleted once I have it all here.

D83 class, 1922 - eight units

D91 class, 1923 - twelve units

D113 class, 1928 - fourteen units

D127 class, 1928 - fifteen units

D142 class, 1933 - ten units

D152 class, 1939 - twenty-eight units

D180 class, 1945 - one unit

D181 class, 1946 - three plus units

D 83 Class

D 83, Iberia DD laid down 1922

D 83
D 84
D 85
D 86
D 87
D 88
D 89
D 90

Displacement:
1,524 t light; 1,583 t standard; 1,735 t normal; 1,849 t full load
Loading submergence 181 tons/feet

Dimensions:
370.73 ft x 30.84 ft x 12.80 ft (normal load)
113.00 m x 9.40 m x 3.90 m

Armament:
4 - 5.12" / 130 mm guns
4 - 2.24" / 57 mm guns
4 - 0.53" / 14 mm guns
Weight of broadside 291 lbs / 132 kg
8 - 23.6" / 600 mm above water torpedoes

Armour:
Main gun shields 0.79" / 20 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 42,312 shp / 31,565 Kw = 34.00 kts
Range 5,000nm at 12.00 kts

Complement:
134 - 174

Cost:
£0.595 million / $2.380 million

Distribution of weights at normal displacement:
Armament: 36 tons, 2.1 %
Armour: 5 tons, 0.3 %
Belts: 0 tons, 0.0 %, Armament: 5 tons, 0.3 %, Armour Deck: 0 tons, 0.0 %
Conning Tower: 0 tons, 0.0 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 959 tons, 55.3 %
Hull, fittings & equipment: 473 tons, 27.3 %
Fuel, ammunition & stores: 211 tons, 12.1 %
Miscellaneous weights: 50 tons, 2.9 %

Metacentric height 1.2

Remarks:
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage & compartmentation is cramped
Room for accommodation & workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.18
Shellfire needed to sink: 343 lbs / 156 Kg = 5.1 x 5.1 " / 130 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 0.2
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 70 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.39
Relative quality as seaboat: 1.22

Hull form characteristics:
Block coefficient: 0.415
Sharpness coefficient: 0.28
Hull speed coefficient 'M': 9.43
'Natural speed' for length: 19.25 kts
Power going to wave formation at top speed: 65 %
Trim: 57
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 197.4 %
Relative accommodation and working space: 53.1 %
(Average = 100%)
Displacement factor: 54 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.50
(Structure weight / hull surface area: 35 lbs / square foot or 171 Kg / square metre)
Relative longitudinal hull strength: 1.20
(for 15.09 ft / 4.60 m average freeboard, freeboard adjustment 4.42 ft)
Relative composite hull strength: 0.55

3 funnels

Found an old design of LA's!

D-91 Class

The actual, original sim has been lost in the mists of time, but this is a stab at recreating something close. The one piece of data I have at hand is a standard displacement of 1,597 t. Given that this is not hugely different from the preceding D-83 class, I started from there and then tweaked specs (freeboard and speed) until the hull strength was acceptable.

D91 - D112, laid down 1923

Enter ship name, Enter country Enter ship type laid down 1923

Displacement:
1,528 t light; 1,597 t standard; 1,749 t normal; 1,871 t full load

Dimensions: Length overall / water x beam x draught
380.42 ft / 373.85 ft x 30.84 ft x 12.80 ft (normal load)
115.95 m / 113.95 m x 9.40 m x 3.90 m

Armament:
4 - 5.12" / 130 mm guns in single mounts, 67.03lbs / 30.41kg shells, 1923 Model
Breech loading guns in deck mounts
on centreline ends, evenly spread, 2 raised mounts - superfiring
4 - 2.24" / 57.0 mm guns (2x2 guns), 5.65lbs / 2.56kg shells, 1923 Model
Anti-aircraft guns in deck mounts
on side, all amidships
4 - 0.55" / 14.0 mm guns in single mounts, 0.08lbs / 0.04kg shells, 1923 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 291 lbs / 132 kg
Shells per gun, main battery: 200
8 - 23.6" / 600 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.79" / 20 mm - -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 39,662 shp / 29,588 Kw = 33.50 kts
Range 5,000nm at 12.00 kts
Bunker at max displacement = 274 tons

Complement:
134 - 175

Cost:
£0.625 million / $2.498 million

Distribution of weights at normal displacement:
Armament: 36 tons, 2.1 %
Armour: 9 tons, 0.5 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 9 tons, 0.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 933 tons, 53.3 %
Hull, fittings & equipment: 500 tons, 28.6 %
Fuel, ammunition & stores: 221 tons, 12.6 %
Miscellaneous weights: 50 tons, 2.9 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
408 lbs / 185 Kg = 6.1 x 5.1 " / 130 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.27
Metacentric height 1.3 ft / 0.4 m
Roll period: 11.3 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.38
Seaboat quality (Average = 1.00): 1.22

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.415
Length to Beam Ratio: 12.12 : 1
'Natural speed' for length: 19.34 kts
Power going to wave formation at top speed: 63 %
Trim (Max stability = 0, Max steadiness = 100): 57
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 18.04 ft / 5.50 m
- Forecastle (20 %): 18.04 ft / 5.50 m
- Mid (55 %): 18.04 ft / 5.50 m (9.84 ft / 3.00 m aft of break)
- Quarterdeck (15 %): 9.84 ft / 3.00 m
- Stern: 9.84 ft / 3.00 m
- Average freeboard: 14.35 ft / 4.38 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 191.6 %
- Above water (accommodation/working, high = better): 57.4 %
Waterplane Area: 7,163 Square feet or 666 Square metres
Displacement factor (Displacement / loading): 58 %
Structure weight / hull surface area: 32 lbs/sq ft or 156 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.85
- Overall: 0.57
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
Good seaboat, rides out heavy weather easily

D113 Class

The D113 type is 1,917 t standard. My take is that the hull's larger and the guns have hoists.

D113 - D126, laid down 1928

Enter ship name, Enter country Enter ship type laid down 1928

Displacement:
1,833 t light; 1,917 t standard; 2,092 t normal; 2,232 t full load

Dimensions: Length overall / water x beam x draught
382.91 ft / 375.98 ft x 35.76 ft x 13.12 ft (normal load)
116.71 m / 114.60 m x 10.90 m x 4.00 m

Armament:
4 - 5.12" / 130 mm guns in single mounts, 67.03lbs / 30.41kg shells, 1928 Model
Breech loading guns in deck mounts with hoists
on centreline ends, evenly spread, all raised mounts - superfiring
4 - 2.24" / 57.0 mm guns (2x2 guns), 5.65lbs / 2.56kg shells, 1928 Model
Anti-aircraft guns in deck mounts
on side, all amidships
8 - 0.55" / 14.0 mm guns (4x2 guns), 0.08lbs / 0.04kg shells, 1928 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 291 lbs / 132 kg
Shells per gun, main battery: 250
8 - 23.6" / 600 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.79" / 20 mm - -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 45,816 shp / 34,179 Kw = 33.60 kts
Range 5,500nm at 12.00 kts
Bunker at max displacement = 315 tons

Complement:
154 - 201

Cost:
£0.957 million / $3.828 million

Distribution of weights at normal displacement:
Armament: 36 tons, 1.7 %
Armour: 9 tons, 0.4 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 9 tons, 0.4 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 1,113 tons, 53.2 %
Hull, fittings & equipment: 625 tons, 29.9 %
Fuel, ammunition & stores: 259 tons, 12.4 %
Miscellaneous weights: 50 tons, 2.4 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
501 lbs / 227 Kg = 7.5 x 5.1 " / 130 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.21
Metacentric height 1.5 ft / 0.5 m
Roll period: 12.2 seconds
Steadiness - As gun platform (Average = 50 %): 67 %
- Recoil effect (Restricted arc if above 1.00): 0.56
Seaboat quality (Average = 1.00): 1.03

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.415
Length to Beam Ratio: 10.51 : 1
'Natural speed' for length: 19.39 kts
Power going to wave formation at top speed: 65 %
Trim (Max stability = 0, Max steadiness = 100): 65
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 19.03 ft / 5.80 m
- Forecastle (20 %): 19.03 ft / 5.80 m
- Mid (55 %): 19.03 ft / 5.80 m (10.83 ft / 3.30 m aft of break)
- Quarterdeck (15 %): 10.83 ft / 3.30 m
- Stern: 10.83 ft / 3.30 m
- Average freeboard: 15.34 ft / 4.68 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 188.5 %
- Above water (accommodation/working, high = better): 75.8 %
Waterplane Area: 8,354 Square feet or 776 Square metres
Displacement factor (Displacement / loading): 65 %
Structure weight / hull surface area: 38 lbs/sq ft or 184 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.73
- Overall: 0.57
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped

D127 Class

A resim of the D127 class is also necessary. Standard displacement is known to be 1,600 t, so I'm looking at an incremental improvement over the D91 type.

D127 to D141, laid down 1928

Enter ship name, Enter country Enter ship type laid down 1928

Displacement:
1,523 t light; 1,600 t standard; 1,759 t normal; 1,887 t full load

Dimensions: Length overall / water x beam x draught
382.55 ft / 375.98 ft x 30.84 ft x 12.80 ft (normal load)
116.60 m / 114.60 m x 9.40 m x 3.90 m

Armament:
4 - 5.12" / 130 mm guns in single mounts, 67.03lbs / 30.41kg shells, 1928 Model
Breech loading guns in deck mounts
on centreline ends, evenly spread, 2 raised mounts - superfiring
4 - 2.24" / 57.0 mm guns (2x2 guns), 5.65lbs / 2.56kg shells, 1928 Model
Anti-aircraft guns in deck mounts
on side, all amidships
8 - 0.55" / 14.0 mm guns (4x2 guns), 0.08lbs / 0.04kg shells, 1928 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 291 lbs / 132 kg
Shells per gun, main battery: 250
8 - 23.6" / 600 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.79" / 20 mm - -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 41,164 shp / 30,709 Kw = 33.80 kts
Range 5,500nm at 12.00 kts
Bunker at max displacement = 287 tons

Complement:
135 - 176

Cost:
£0.814 million / $3.257 million

Distribution of weights at normal displacement:
Armament: 36 tons, 2.1 %
Armour: 9 tons, 0.5 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 9 tons, 0.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 924 tons, 52.5 %
Hull, fittings & equipment: 503 tons, 28.6 %
Fuel, ammunition & stores: 237 tons, 13.5 %
Miscellaneous weights: 50 tons, 2.8 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
419 lbs / 190 Kg = 6.2 x 5.1 " / 130 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.27
Metacentric height 1.3 ft / 0.4 m
Roll period: 11.2 seconds
Steadiness - As gun platform (Average = 50 %): 69 %
- Recoil effect (Restricted arc if above 1.00): 0.38
Seaboat quality (Average = 1.00): 1.20

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.415
Length to Beam Ratio: 12.19 : 1
'Natural speed' for length: 19.39 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 57
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 18.04 ft / 5.50 m
- Forecastle (20 %): 18.04 ft / 5.50 m
- Mid (55 %): 18.04 ft / 5.50 m (9.84 ft / 3.00 m aft of break)
- Quarterdeck (15 %): 9.84 ft / 3.00 m
- Stern: 9.84 ft / 3.00 m
- Average freeboard: 14.35 ft / 4.38 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 189.4 %
- Above water (accommodation/working, high = better): 57.8 %
Waterplane Area: 7,204 Square feet or 669 Square metres
Displacement factor (Displacement / loading): 60 %
Structure weight / hull surface area: 32 lbs/sq ft or 156 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.83
- Overall: 0.57
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Good seaboat, rides out heavy weather easily

D142 class
Iberia DD laid down 1933

D142 to D151

Displacement:
1,245 t light; 1,299 t standard; 1,414 t normal; 1,506 t full load

Dimensions: Length overall / water x beam x draught
359.14 ft / 341.21 ft x 31.99 ft x 11.15 ft (normal load)
109.47 m / 104.00 m x 9.75 m x 3.40 m

Armament:
4 - 5.12" / 130 mm guns (2x2 guns), 67.03lbs / 30.40kg shells, 1933 Model
Breech loading guns in deck mounts
on centreline ends, evenly spread, 1 raised mount
4 - 2.24" / 57.0 mm guns (2x2 guns), 5.65lbs / 2.56kg shells, 1933 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
8 - 0.98" / 25.0 mm guns (4x2 guns), 0.48lbs / 0.22kg shells, 1933 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 295 lbs / 134 kg
Shells per gun, main battery: 150
5 - 23.6" / 600 mm above water torpedoes

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

- Conning tower: 0.79" / 20 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 32,910 shp / 24,551 Kw = 34.00 kts
Range 5,000nm at 12.00 kts
Bunker at max displacement = 206 tons

Complement:
114 - 149

Cost:
£0.802 million / $3.209 million

Distribution of weights at normal displacement:
Armament: 37 tons, 2.6 %
Armour: 22 tons, 1.6 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 20 tons, 1.4 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 2 tons, 0.2 %
Machinery: 680 tons, 48.1 %
Hull, fittings & equipment: 457 tons, 32.3 %
Fuel, ammunition & stores: 169 tons, 11.9 %
Miscellaneous weights: 50 tons, 3.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
424 lbs / 192 Kg = 6.3 x 5.1 " / 130 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 1.3 ft / 0.4 m
Roll period: 11.9 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.41
Seaboat quality (Average = 1.00): 1.04

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.406
Length to Beam Ratio: 10.67 : 1
'Natural speed' for length: 21.23 kts
Power going to wave formation at top speed: 68 %
Trim (Max stability = 0, Max steadiness = 100): 67
Bow angle (Positive = bow angles forward): 35.00 degrees
Stern overhang: 3.00 ft / 0.91 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.33 ft / 6.50 m
- Forecastle (20 %): 18.04 ft / 5.50 m
- Mid (55 %): 18.04 ft / 5.50 m (9.84 ft / 3.00 m aft of break)
- Quarterdeck (15 %): 9.84 ft / 3.00 m
- Stern: 9.84 ft / 3.00 m
- Average freeboard: 14.62 ft / 4.46 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 179.0 %
- Above water (accommodation/working, high = better): 100.2 %
Waterplane Area: 7,000 Square feet or 650 Square metres
Displacement factor (Displacement / loading): 62 %
Structure weight / hull surface area: 32 lbs/sq ft or 158 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.24
- Overall: 0.58
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

D152 class

Iberia DD laid down 1939

D152 to D167, laid down 1939
D168 to D175, laid down 1940
D176 to D179, laid down 1941

Displacement:
1,363 t light; 1,420 t standard; 1,536 t normal; 1,628 t full load

Dimensions: Length overall / water x beam x draught
368.75 ft / 351.05 ft x 31.99 ft x 12.30 ft (normal load)
112.40 m / 107.00 m x 9.75 m x 3.75 m

Armament:
4 - 5.12" / 130 mm guns (2x2 guns), 67.03lbs / 30.41kg shells, 1939 Model
Dual purpose guns in deck mounts with hoists
on centreline, all forward, 1 raised mount - superfiring
4 - 2.24" / 57.0 mm guns (2x2 guns), 5.65lbs / 2.56kg shells, 1939 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
2 - 2.24" / 57.0 mm guns (1x2 guns), 5.65lbs / 2.56kg shells, 1939 Model
Anti-aircraft guns in deck mount
on centreline aft, all raised guns - superfiring
8 - 0.98" / 25.0 mm guns (4x2 guns), 0.48lbs / 0.22kg shells, 1939 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 306 lbs / 139 kg
Shells per gun, main battery: 150
4 - 23.6" / 600 mm above water torpedoes

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

- Conning tower: 0.79" / 20 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 33,747 shp / 25,175 Kw = 34.00 kts
Range 5,000nm at 12.00 kts
Bunker at max displacement = 208 tons

Complement:
122 - 159

Cost:
£1.044 million / $4.174 million

Distribution of weights at normal displacement:
Armament: 38 tons, 2.5 %
Armour: 21 tons, 1.4 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 19 tons, 1.2 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 2 tons, 0.1 %
Machinery: 711 tons, 46.3 %
Hull, fittings & equipment: 542 tons, 35.3 %
Fuel, ammunition & stores: 173 tons, 11.3 %
Miscellaneous weights: 50 tons, 3.3 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
450 lbs / 204 Kg = 6.7 x 5.1 " / 130 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.06
Metacentric height 1.0 ft / 0.3 m
Roll period: 13.3 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.81
Seaboat quality (Average = 1.00): 1.02

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.389
Length to Beam Ratio: 10.97 : 1
'Natural speed' for length: 21.54 kts
Power going to wave formation at top speed: 66 %
Trim (Max stability = 0, Max steadiness = 100): 68
Bow angle (Positive = bow angles forward): 35.00 degrees
Stern overhang: 3.00 ft / 0.91 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.00 ft / 6.40 m
- Forecastle (20 %): 19.03 ft / 5.80 m
- Mid (50 %): 18.04 ft / 5.50 m (9.84 ft / 3.00 m aft of break)
- Quarterdeck (15 %): 9.84 ft / 3.00 m
- Stern: 9.84 ft / 3.00 m
- Average freeboard: 14.45 ft / 4.40 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 172.2 %
- Above water (accommodation/working, high = better): 106.4 %
Waterplane Area: 7,132 Square feet or 663 Square metres
Displacement factor (Displacement / loading): 70 %
Structure weight / hull surface area: 37 lbs/sq ft or 182 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.51
- Longitudinal: 2.23
- Overall: 0.59
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

D-180 Class

This is a "special", since the Iberians have not laid down a destroyer for a few years now.

The main battery is located in A, B(s) and s), with the two 57mm mountings staggered amidships in about the Q location.

A new Squid-like ahead-throwing ASW weapon is being trialed. I've allocated 30 t for it, pending further information, but there is enough miscellaneous weight to support a larger mount weight. The reasons for Iberia adopting such are:

1) No shortage of submarine action in the China War, so there is cause for concern.
2) Its installation on the quarterdeck doesn't take away from the type's main gun battery. This is an issue for Iberian destroyermen who want a strong broadside available for mass combat with Mexican hordes.
3) From the out-of-character perspective, I've already got Bharat dealing in ASW rockets, so Iberia can do mortars.

One unit will be laid down, with (notionally) five others following in 1946. Subsequently, Iberia would dedicate resources for consistent construction of six destroyers per year.

D-180, laid down 1945

Special D, laid down 1945

Displacement:
2,115 t light; 2,266 t standard; 2,644 t normal; 2,947 t full load

Dimensions: Length overall / water x beam x draught
430.99 ft / 419.95 ft x 42.65 ft x 12.30 ft (normal load)
131.37 m / 128.00 m x 13.00 m x 3.75 m

Armament:
6 - 5.12" / 130 mm guns (3x2 guns), 67.03lbs / 30.40kg shells, 1945 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 2 raised mounts - superfiring
4 - 2.24" / 57.0 mm guns (2x2 guns), 5.65lbs / 2.56kg shells, 1945 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
8 - 0.98" / 25.0 mm guns (4x2 guns), 0.48lbs / 0.22kg shells, 1945 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 429 lbs / 194 kg
Shells per gun, main battery: 400
4 - 23.6" / 600 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.79" / 20 mm 0.39" / 10 mm 0.39" / 10 mm
3rd: 0.39" / 10 mm - -
4th: 0.39" / 10 mm - -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 45,000 shp / 33,570 Kw = 34.04 kts
Range 8,000nm at 15.00 kts
Bunker at max displacement = 681 tons

Complement:
183 - 239

Cost:
£1.881 million / $7.525 million

Distribution of weights at normal displacement:
Armament: 54 tons, 2.0 %
Armour: 12 tons, 0.5 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 12 tons, 0.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 1,095 tons, 41.4 %
Hull, fittings & equipment: 805 tons, 30.4 %
Fuel, ammunition & stores: 530 tons, 20.0 %
Miscellaneous weights: 149 tons, 5.6 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
974 lbs / 442 Kg = 14.5 x 5.1 " / 130 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 2.0 ft / 0.6 m
Roll period: 12.8 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.46
Seaboat quality (Average = 1.00): 1.03

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.420
Length to Beam Ratio: 9.85 : 1
'Natural speed' for length: 23.66 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 68
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.33 ft / 6.50 m
- Forecastle (20 %): 16.40 ft / 5.00 m
- Mid (50 %): 16.40 ft / 5.00 m
- Quarterdeck (15 %): 16.40 ft / 5.00 m
- Stern: 16.40 ft / 5.00 m
- Average freeboard: 16.80 ft / 5.12 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 158.0 %
- Above water (accommodation/working, high = better): 159.4 %
Waterplane Area: 11,592 Square feet or 1,077 Square metres
Displacement factor (Displacement / loading): 92 %
Structure weight / hull surface area: 40 lbs/sq ft or 198 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.37
- Overall: 0.55
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform

D-181 Class

The D-181 class destroyers will replace the early Cleito-era destroyers still soldiering on in Iberian service. Probably twelve units to be built over the next two years.

D-181 to -186, laid down 1946

Enter ship name, Enter country Enter ship type laid down 1946

Displacement:
2,060 t light; 2,214 t standard; 2,586 t normal; 2,883 t full load

Dimensions: Length overall / water x beam x draught
430.75 ft / 419.95 ft x 42.65 ft x 11.48 ft (normal load)
131.29 m / 128.00 m x 13.00 m x 3.50 m

Armament:
6 - 5.12" / 130 mm guns (3x2 guns), 67.03lbs / 30.41kg shells, 1946 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
2 - 2.24" / 57.0 mm guns in one mount, 5.65lbs / 2.56kg shells, 1946 Model
Anti-aircraft guns in deck mount
on centreline aft, 1 raised gun
4 - 2.24" / 57.0 mm guns (2x2 guns), 5.65lbs / 2.56kg shells, 1946 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
8 - 0.98" / 25.0 mm guns (4x2 guns), 0.48lbs / 0.22kg shells, 1946 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 440 lbs / 200 kg
Shells per gun, main battery: 400
4 - 23.6" / 600 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.79" / 20 mm 0.39" / 10 mm 0.79" / 20 mm
2nd: 0.39" / 10 mm - -
3rd: 0.39" / 10 mm - -
4th: 0.39" / 10 mm - -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 45,577 shp / 34,000 Kw = 34.13 kts
Range 8,000nm at 15.00 kts
Bunker at max displacement = 669 tons

Complement:
180 - 235

Cost:
£1.911 million / $7.643 million

Distribution of weights at normal displacement:
Armament: 55 tons, 2.1 %
Armour: 13 tons, 0.5 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 13 tons, 0.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 1,080 tons, 41.8 %
Hull, fittings & equipment: 758 tons, 29.3 %
Fuel, ammunition & stores: 525 tons, 20.3 %
Miscellaneous weights: 154 tons, 6.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
888 lbs / 403 Kg = 13.2 x 5.1 " / 130 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.16
Metacentric height 1.8 ft / 0.6 m
Roll period: 13.2 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.43
Seaboat quality (Average = 1.00): 0.90

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.440
Length to Beam Ratio: 9.85 : 1
'Natural speed' for length: 23.59 kts
Power going to wave formation at top speed: 65 %
Trim (Max stability = 0, Max steadiness = 100): 78
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 20.67 ft / 6.30 m
- Forecastle (20 %): 15.75 ft / 4.80 m
- Mid (50 %): 15.75 ft / 4.80 m
- Quarterdeck (15 %): 15.75 ft / 4.80 m
- Stern: 15.75 ft / 4.80 m
- Average freeboard: 16.14 ft / 4.92 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 160.4 %
- Above water (accommodation/working, high = better): 158.0 %
Waterplane Area: 11,771 Square feet or 1,094 Square metres
Displacement factor (Displacement / loading): 90 %
Structure weight / hull surface area: 39 lbs/sq ft or 192 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.15
- Overall: 0.54
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather