WesWorld

While Ireland will continue building the Pooka-class submarines in 1940, aiming to replace all the H-boats, it leaves me a bit of tonnage to work on another project or two.

First, the three ex-Danish sloops of the Airmed-class need a refit. Seems that I plum forgot one of them was shot up, and... well, I neglected to repair it for two years. Moreover, as they're now sixteen years old, they'll be over our reinstated gentleman's rules for refits, so it's probably time. Additionally, the LE Connacht will be modified to Batch Two specifications (4.5" DP instead of 130mm).

Second, the four refitted Irish S-class destroyers, the so-called Contae-class escorts, are scheduled for replacement by four to eight modern destroyers sometime in the early 1940s. Their replacements will be named... uhm, the Contae class destroyers...

[SIZE=3]Airmed, Danish-built Irish Sloop laid down 1924 (Rebuilt 1940)[/SIZE]

Displacement:
893 t light; 948 t standard; 1,191 t normal; 1,385 t full load

Dimensions: Length overall / water x beam x draught
286.73 ft / 280.00 ft x 33.00 ft x 10.00 ft (normal load)
87.40 m / 85.34 m x 10.06 m x 3.05 m

Armament:
3 - 4.50" / 114 mm guns in single mounts, 45.56lbs / 20.67kg shells, 1940 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount
2 - 1.57" / 40.0 mm guns (1x2 guns), 1.95lbs / 0.89kg shells, 1940 Model
Anti-aircraft guns in deck mount
on centreline aft, all raised guns - superfiring
4 - 1.57" / 40.0 mm guns (2x2 guns), 1.95lbs / 0.89kg shells, 1940 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
12 - 0.79" / 20.0 mm guns (1x12 guns), 0.24lbs / 0.11kg shells, 1924 Model
Machine guns in deck mount
on side, all raised guns
Weight of broadside 151 lbs / 69 kg
Shells per gun, main battery: 350

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.00" / 25 mm - -
2nd: 0.75" / 19 mm - -
3rd: 0.50" / 13 mm - -

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 8,154 shp / 6,083 Kw = 24.00 kts
Range 8,000nm at 15.00 kts
Bunker at max displacement = 438 tons

Complement:
100 - 131

Cost:
£0.240 million / $0.960 million

Distribution of weights at normal displacement:
Armament: 19 tons, 1.6 %
Armour: 8 tons, 0.7 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 8 tons, 0.7 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 218 tons, 18.3 %
Hull, fittings & equipment: 547 tons, 45.9 %
Fuel, ammunition & stores: 298 tons, 25.1 %
Miscellaneous weights: 100 tons, 8.4 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2,212 lbs / 1,003 Kg = 48.5 x 4.5 " / 114 mm shells or 0.9 torpedoes
Stability (Unstable if below 1.00): 1.14
Metacentric height 1.2 ft / 0.4 m
Roll period: 12.6 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.34
Seaboat quality (Average = 1.00): 1.40

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.451
Length to Beam Ratio: 8.48 : 1
'Natural speed' for length: 19.48 kts
Power going to wave formation at top speed: 60 %
Trim (Max stability = 0, Max steadiness = 100): 50
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: 18.50 ft / 5.64 m
- Forecastle (20 %): 16.50 ft / 5.03 m
- Mid (50 %): 16.50 ft / 5.03 m (9.75 ft / 2.97 m aft of break)
- Quarterdeck (15 %): 9.75 ft / 2.97 m
- Stern: 9.75 ft / 2.97 m
- Average freeboard: 13.29 ft / 4.05 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 83.1 %
- Above water (accommodation/working, high = better): 150.2 %
Waterplane Area: 6,128 Square feet or 569 Square metres
Displacement factor (Displacement / loading): 171 %
Structure weight / hull surface area: 51 lbs/sq ft or 249 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.90
- Longitudinal: 3.24
- Overall: 1.02
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

Changes:
- Replacement of the 130mm deck gun with British 4.5" DP single.
- Replacement of 57mm guns with Bofors 40mm.
- Re-engining with 1940 B+W diesels, and improvement of range.
- Installation of modern ASDIC and other electronics (probably not including radar)
- Renovation of internal spaces

[SIZE=3]County Monaghan, Irish Destroyer laid down 1940[/SIZE]

Displacement:
1,350 t light; 1,440 t standard; 1,646 t normal; 1,811 t full load

Dimensions: Length overall / water x beam x draught
366.17 ft / 354.33 ft x 33.46 ft x 11.48 ft (normal load)
111.61 m / 108.00 m x 10.20 m x 3.50 m

Armament:
6 - 4.50" / 114 mm guns (3x2 guns), 45.56lbs / 20.67kg shells, 1940 Model
Dual purpose guns in deck mounts
on centreline ends, majority forward, 1 raised mount - superfiring
2 - 1.57" / 40.0 mm guns (1x2 guns), 1.95lbs / 0.89kg shells, 1940 Model
Anti-aircraft guns in deck mount
on centreline aft, all raised guns - superfiring
4 - 1.57" / 40.0 mm guns in single mounts, 1.95lbs / 0.89kg shells, 1940 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 285 lbs / 129 kg
Shells per gun, main battery: 350
4 - 21.0" / 533.4 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: 0.39" / 10 mm - -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 33,853 shp / 25,254 Kw = 33.50 kts
Range 5,500nm at 15.00 kts
Bunker at max displacement = 372 tons

Complement:
128 - 167

Cost:
£1.093 million / $4.372 million

Distribution of weights at normal displacement:
Armament: 36 tons, 2.2 %
Armour: 18 tons, 1.1 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 18 tons, 1.1 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 750 tons, 45.6 %
Hull, fittings & equipment: 481 tons, 29.2 %
Fuel, ammunition & stores: 296 tons, 18.0 %
Miscellaneous weights: 65 tons, 3.9 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
531 lbs / 241 Kg = 11.6 x 4.5 " / 114 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.30
Metacentric height 1.5 ft / 0.5 m
Roll period: 11.3 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.27
Seaboat quality (Average = 1.00): 1.07

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.423
Length to Beam Ratio: 10.59 : 1
'Natural speed' for length: 21.60 kts
Power going to wave formation at top speed: 67 %
Trim (Max stability = 0, Max steadiness = 100): 65
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 20.51 ft / 6.25 m
- Forecastle (20 %): 19.69 ft / 6.00 m
- Mid (35 %): 18.86 ft / 5.75 m (11.81 ft / 3.60 m aft of break)
- Quarterdeck (15 %): 12.30 ft / 3.75 m
- Stern: 13.12 ft / 4.00 m
- Average freeboard: 14.83 ft / 4.52 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 170.2 %
- Above water (accommodation/working, high = better): 120.6 %
Waterplane Area: 7,692 Square feet or 715 Square metres
Displacement factor (Displacement / loading): 76 %
Structure weight / hull surface area: 32 lbs/sq ft or 157 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.51
- Longitudinal: 1.90
- Overall: 0.58
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

Notes:
The County Monaghans are replacements for the County Donegals (ex-British S-class DDs). Miscellaneous weight primarily serves for ASW armament and equipment.

Probably to be laid down sometime in 1940:
Contae Mhuineacháin / County Monaghan
Contae Chill Mhantáin / County Wicklow

Mind that this is still a potential design. The other option available is to build more of the only-slightly-larger 8x4.5"-armed Province-class destroyers.

Don't forget the shell weight of the 4.5in is 45lbs. You might save a tad of weight in SS by revising the shell weight.

Ah, okay. I didn't really fiddle with the weight much, since I like the nice neat number "1,350t" provides.

[SIZE=3]County Monaghan, Irish Destroyer laid down 1940[/SIZE]

Displacement:
1,350 t light; 1,439 t standard; 1,646 t normal; 1,811 t full load

Dimensions: Length overall / water x beam x draught
366.17 ft / 354.33 ft x 33.46 ft x 11.48 ft (normal load)
111.61 m / 108.00 m x 10.20 m x 3.50 m

Armament:
6 - 4.50" / 114 mm guns (3x2 guns), 45.00lbs / 20.41kg shells, 1940 Model
Dual purpose guns in deck mounts
on centreline ends, majority forward, 1 raised mount - superfiring
2 - 1.57" / 40.0 mm guns (1x2 guns), 1.95lbs / 0.88kg shells, 1940 Model
Anti-aircraft guns in deck mount
on centreline aft, all raised guns - superfiring
4 - 1.57" / 40.0 mm guns in single mounts, 1.95lbs / 0.88kg shells, 1940 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 282 lbs / 128 kg
Shells per gun, main battery: 350
5 - 21.0" / 533.4 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: 0.39" / 10 mm - -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 34,268 shp / 25,564 Kw = 33.60 kts
Range 5,500nm at 15.00 kts
Bunker at max displacement = 372 tons

Complement:
128 - 167

Cost:
£1.096 million / $4.385 million

Distribution of weights at normal displacement:
Armament: 36 tons, 2.2 %
Armour: 18 tons, 1.1 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 18 tons, 1.1 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 754 tons, 45.8 %
Hull, fittings & equipment: 477 tons, 29.0 %
Fuel, ammunition & stores: 296 tons, 18.0 %
Miscellaneous weights: 65 tons, 3.9 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
520 lbs / 236 Kg = 11.4 x 4.5 " / 114 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.29
Metacentric height 1.5 ft / 0.5 m
Roll period: 11.3 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.27
Seaboat quality (Average = 1.00): 1.06

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.423
Length to Beam Ratio: 10.59 : 1
'Natural speed' for length: 21.60 kts
Power going to wave formation at top speed: 67 %
Trim (Max stability = 0, Max steadiness = 100): 66
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 20.51 ft / 6.25 m
- Forecastle (20 %): 19.69 ft / 6.00 m
- Mid (35 %): 18.86 ft / 5.75 m (11.81 ft / 3.60 m aft of break)
- Quarterdeck (15 %): 12.30 ft / 3.75 m
- Stern: 13.12 ft / 4.00 m
- Average freeboard: 14.83 ft / 4.52 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 170.9 %
- Above water (accommodation/working, high = better): 111.4 %
Waterplane Area: 7,691 Square feet or 715 Square metres
Displacement factor (Displacement / loading): 75 %
Structure weight / hull surface area: 32 lbs/sq ft or 155 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.89
- Overall: 0.57
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