WesWorld

A new design I'm cooking up for the Dutch is a new submarine class. I've now ditched the old K and O split (coastal and ocean) and all future submarines will be oceanic types.
This design is based on the real Dolfijn class design. Nothing stellar but should be a useful design. I'll probably aim to build at least 5 or more in the next few years.
As ever, design advice is welcome.

O-22 Class
Date: 1948
Ocean
Armament:
- Guns: none
- Torpedoes: 12 21in torpedo tubes (6 fore and aft)
- Mines: 24 (also simming reload torpedoes)
Electric HP: 4,400hp
Diesel HP: 3,000hp
Crew: 69
Weight fuel & batts: 420 tons
Light Displacement: 1,545 tons
Loaded Displacement/Kerb Weight: 1,869 tons
Full Displacement: 2,170 tons
Reserve buoyancy: 14%
Max Surf Speed: 13.9 knots
Max Sub Speed: 15.4 knots

Length: 79.5 m
Beam: 7.8 m
Draft: 7 m
Crush depth: 317.5 m
Tons Oil: 300 tons
Tons Battery: 120 tons
Cruise speed: 12 knots
Submerged speed: 4 knots
Surface Range: 7,965 nm@13 knots; 9,348 nm@12 knots; 13,462 nm@10 knots
Submerged Range 2 nm@15 knots; 34 nm@8 knots; 199 nm@4 knots

Notes: 175 tons miscellaneous weight for radar and ASDIC and hydrophones and some extra gear

The Dutch Navy relies mainly on small scouting carriers with only two slightly larger strike carriers. In 1948 its proposed to lay down two further strike carriers to boost numbers of aircraft at sea.
The ultimate plan would be to have four of these in the DEI supported by four scouting CVs with the screening forces and the rest of the smaller CVs in Home waters or perhaps off Africa.
The CVS-8 is a development of the CVS-5 but with some improvements but similar design ethos and airgroup.

CVS-8 Class, Netherlands Aircraft Carrier(Strike) laid down 1948

Displacement:
30,135 t light; 31,086 t standard; 35,442 t normal; 38,927 t full load

Dimensions: Length overall / water x beam x draught
856.06 ft / 820.21 ft x 98.43 ft x 27.89 ft (normal load)
260.93 m / 250.00 m x 30.00 m x 8.50 m

Armament:
16 - 4.53" / 115 mm guns (8x2 guns), 52.91lbs / 24.00kg shells, 1944 Model
Dual purpose guns in deck mounts with hoists
on side ends, evenly spread, all raised mounts - superfiring
16 - 2.24" / 57.0 mm guns (8x2 guns), 5.73lbs / 2.60kg shells, 1943 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 4 raised mounts
32 - 1.57" / 40.0 mm guns (8x4 guns), 1.94lbs / 0.88kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
8 - 0.91" / 23.0 mm guns (4x2 guns), 0.44lbs / 0.20kg shells, 1948 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 1,004 lbs / 455 kg
Shells per gun, main battery: 400

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.13" / 105 mm 656.17 ft / 200.00 m 13.12 ft / 4.00 m
Ends: Unarmoured
Upper: 1.97" / 50 mm 656.17 ft / 200.00 m 22.97 ft / 7.00 m
Main Belt covers 123 % of normal length

- Torpedo Bulkhead:
1.77" / 45 mm 656.17 ft / 200.00 m 26.25 ft / 8.00 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.57" / 40 mm 0.98" / 25 mm 0.98" / 25 mm
2nd: 1.57" / 40 mm 0.59" / 15 mm -
3rd: 0.59" / 15 mm 0.59" / 15 mm -
4th: 0.39" / 10 mm 0.39" / 10 mm -

- Armour deck: 4.13" / 105 mm, Conning tower: 1.97" / 50 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 150,000 shp / 111,900 Kw = 32.05 kts
Range 19,500nm at 15.00 kts
Bunker at max displacement = 7,841 tons

Complement:
1,291 - 1,679

Cost:
£12.391 million / $49.566 million

Distribution of weights at normal displacement:
Armament: 112 tons, 0.3 %
Armour: 8,422 tons, 23.8 %
- Belts: 2,664 tons, 7.5 %
- Torpedo bulkhead: 1,129 tons, 3.2 %
- Armament: 93 tons, 0.3 %
- Armour Deck: 4,490 tons, 12.7 %
- Conning Tower: 46 tons, 0.1 %
Machinery: 3,666 tons, 10.3 %
Hull, fittings & equipment: 11,936 tons, 33.7 %
Fuel, ammunition & stores: 5,307 tons, 15.0 %
Miscellaneous weights: 6,000 tons, 16.9 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
87,667 lbs / 39,765 Kg = 1,889.2 x 4.5 " / 115 mm shells or 14.0 torpedoes
Stability (Unstable if below 1.00): 1.22
Metacentric height 7.0 ft / 2.1 m
Roll period: 15.6 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.07
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has raised forecastle
and transom stern
Block coefficient: 0.551
Length to Beam Ratio: 8.33 : 1
'Natural speed' for length: 32.97 kts
Power going to wave formation at top speed: 52 %
Trim (Max stability = 0, Max steadiness = 100): 35
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 9.84 ft / 3.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 55.77 ft / 17.00 m
- Forecastle (20 %): 55.77 ft / 17.00 m (31.99 ft / 9.75 m aft of break)
- Mid (50 %): 31.99 ft / 9.75 m
- Quarterdeck (22 %): 31.99 ft / 9.75 m
- Stern: 31.99 ft / 9.75 m
- Average freeboard: 36.75 ft / 11.20 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 70.3 %
- Above water (accommodation/working, high = better): 277.1 %
Waterplane Area: 58,712 Square feet or 5,454 Square metres
Displacement factor (Displacement / loading): 156 %
Structure weight / hull surface area: 128 lbs/sq ft or 623 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 2.01
- Overall: 1.00
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
Excellent seaboat, comfortable, can fire her guns in the heaviest weather


Class Names:

Hangar deck: 190 x 25 x 5.2 m
Served by two 17 x 10.6m lifts with a capacity for 18,000kg
Two hydralic accelerators with capacity for 18,000kg aircraft
Arrestor gear of 10 wires, 1 trickle wire, 3 forward wires and two safety barriers
Air Group: 70 plus 20 spare aircraft carried disassembled for attrition replacement

Deck Armour: 65mm hangar roof plus 40mm armour deck
Torpedo Bulkhead: One 20mm and two 12.5mm thick bulkheads

Real range is 16,500nm at 15kts (6,684tons), remaining 1,157 tons is for aviation fuel

Electronic Equipment:
1x Signaal LW-01 air search set
1x Signaal ZW-01 surface search set
1x Signaal DA-01 target indication set
2x Signaal HM-VI height-finding set
2x RT.C1 primary directors
4x RT.F1 secondary directors

Looks like a pretty sturdy design, but why 57mm and 40mm at the same time? Or did I miss a similar discussion earlier?

Good point Rocky. I might remove the 40mm and add a couple more 57mm, I don't think 16 LAA mounts will fit anyway given the sizes of these two mounts.
Oddly, as the RN moves away from 57mm back to 40mm the Dutch are doing the opposite!

A new small training vessel to replace the old Z-24t.
Two will be built for ASW and torpedo training.

Albatros Class, Netherlands Training Ship laid down 1948

Displacement:
1,827 t light; 1,924 t standard; 2,157 t normal; 2,343 t full load

Dimensions: Length overall / water x beam x draught
499.89 ft / 492.13 ft x 49.21 ft x 6.56 ft (normal load)
152.37 m / 150.00 m x 15.00 m x 2.00 m

Armament:
4 - 4.53" / 115 mm guns (2x2 guns), 52.91lbs / 24.00kg shells, 1944 Model
Quick firing guns in deck mounts with hoists
on centreline ends, evenly spread
4 - 1.57" / 40.0 mm guns (1x4 guns), 1.94lbs / 0.88kg shells, 1941 Model
Anti-aircraft guns in deck mount
on centreline aft, all raised guns - superfiring
4 - 1.57" / 40.0 mm guns (2x2 guns), 1.94lbs / 0.88kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on centreline, all amidships, all raised mounts - superfiring
4 - 0.91" / 23.0 mm guns (2x2 guns), 0.44lbs / 0.20kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on side, all forward, all raised mounts - superfiring
Weight of broadside 229 lbs / 104 kg
Shells per gun, main battery: 400
4 - 21.0" / 533.4 mm above water torpedoes

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

Machinery:
Oil fired boilers, steam turbines,
Electric motors, 2 shafts, 25,000 shp / 18,650 Kw = 30.00 kts
Range 5,000nm at 15.00 kts
Bunker at max displacement = 419 tons

Complement:
157 - 205

Cost:
£1.273 million / $5.092 million

Distribution of weights at normal displacement:
Armament: 25 tons, 1.2 %
Armour: 11 tons, 0.5 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 11 tons, 0.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 611 tons, 28.3 %
Hull, fittings & equipment: 847 tons, 39.3 %
Fuel, ammunition & stores: 329 tons, 15.3 %
Miscellaneous weights: 333 tons, 15.4 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2,321 lbs / 1,053 Kg = 50.0 x 4.5 " / 115 mm shells or 0.8 torpedoes
Stability (Unstable if below 1.00): 1.40
Metacentric height 3.1 ft / 0.9 m
Roll period: 11.7 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.12
Seaboat quality (Average = 1.00): 1.17

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.475
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 25.39 kts
Power going to wave formation at top speed: 51 %
Trim (Max stability = 0, Max steadiness = 100): 43
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: 21.33 ft / 6.50 m
- Forecastle (20 %): 19.82 ft / 6.04 m
- Mid (70 %): 19.72 ft / 6.01 m (11.81 ft / 3.60 m aft of break)
- Quarterdeck (15 %): 11.81 ft / 3.60 m
- Stern: 11.81 ft / 3.60 m
- Average freeboard: 17.51 ft / 5.34 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 119.6 %
- Above water (accommodation/working, high = better): 316.2 %
Waterplane Area: 16,400 Square feet or 1,524 Square metres
Displacement factor (Displacement / loading): 122 %
Structure weight / hull surface area: 37 lbs/sq ft or 179 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 0.85
- Overall: 0.53
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent

Class Name: Albatros, Reiger

Misc Weight
5 tons for Signaal M1946 surface search set
20 tons for two ASDIC sets
22 tons for Hedgehog and ammunition
20 tons for 2x DC racks and 2x DCT for 36x DCs
6 tons for Hazemeyer IV mounts
100 tons for classroom spaces and equipment
160 tons for accomodation for 80 cadets

A refit for the 1933-vintage Windhond class light cruisers, mainly just to beef the AA a little and some nip and tuck work.


Windhond Class, Netherlands Light Cruiser laid down 1933

Displacement:
5,759 t light; 5,992 t standard; 6,798 t normal; 7,443 t full load

Dimensions: Length overall / water x beam x draught
568.77 ft / 551.18 ft x 51.18 ft x 18.54 ft (normal load)
173.36 m / 168.00 m x 15.60 m x 5.65 m

Armament:
6 - 5.98" / 152 mm guns (3x2 guns), 110.23lbs / 50.00kg shells, 1923 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
4 - 3.54" / 90.0 mm guns in single mounts, 24.25lbs / 11.00kg shells, 1943 Model
Dual purpose guns in deck mounts
on side ends, evenly spread
2 - 3.54" / 90.0 mm guns (1x2 guns), 24.25lbs / 11.00kg shells, 1943 Model
Dual purpose guns in a deck mount with hoist
on centreline aft, all raised guns - superfiring
16 - 1.57" / 40.0 mm guns (4x4 guns), 1.94lbs / 0.88kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
16 - 0.91" / 23.0 mm guns (8x2 guns), 0.44lbs / 0.20kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 845 lbs / 383 kg
Shells per gun, main battery: 190
12 - 24.0" / 609.6 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.15" / 80 mm 403.54 ft / 123.00 m 10.66 ft / 3.25 m
Ends: Unarmoured
Main Belt covers 113 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.35" / 85 mm 0.98" / 25 mm 1.97" / 50 mm
2nd: 0.98" / 25 mm 0.79" / 20 mm -
3rd: 0.98" / 25 mm 0.79" / 20 mm -
4th: 0.59" / 15 mm 0.59" / 15 mm -
5th: 0.59" / 15 mm 0.59" / 15 mm -

- Armour deck: 1.34" / 34 mm, Conning tower: 2.99" / 76 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 69,224 shp / 51,641 Kw = 33.50 kts
Range 8,500nm at 15.00 kts
Bunker at max displacement = 1,452 tons

Complement:
373 - 486

Cost:
£2.692 million / $10.766 million

Distribution of weights at normal displacement:
Armament: 102 tons, 1.5 %
Armour: 1,159 tons, 17.0 %
- Belts: 550 tons, 8.1 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 121 tons, 1.8 %
- Armour Deck: 465 tons, 6.8 %
- Conning Tower: 23 tons, 0.3 %
Machinery: 2,017 tons, 29.7 %
Hull, fittings & equipment: 2,391 tons, 35.2 %
Fuel, ammunition & stores: 1,039 tons, 15.3 %
Miscellaneous weights: 91 tons, 1.3 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
6,037 lbs / 2,738 Kg = 56.3 x 6.0 " / 152 mm shells or 1.1 torpedoes
Stability (Unstable if below 1.00): 1.13
Metacentric height 2.3 ft / 0.7 m
Roll period: 14.2 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.35
Seaboat quality (Average = 1.00): 1.03

Hull form characteristics:
Hull has raised forecastle
and transom stern
Block coefficient: 0.455
Length to Beam Ratio: 10.77 : 1
'Natural speed' for length: 26.78 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 68
Bow angle (Positive = bow angles forward): 23.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 25.98 ft / 7.92 m
- Forecastle (20 %): 23.75 ft / 7.24 m (15.75 ft / 4.80 m aft of break)
- 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: 17.53 ft / 5.34 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 109.9 %
- Above water (accommodation/working, high = better): 93.2 %
Waterplane Area: 18,771 Square feet or 1,744 Square metres
Displacement factor (Displacement / loading): 111 %
Structure weight / hull surface area: 78 lbs/sq ft or 380 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.87
- Longitudinal: 1.22
- Overall: 0.90
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform

Average deck armour thickness is 32.04mm, concentrated over the 130m citadel as 38mm

Misc Weight included originally:
23 tons torpedo tubes and torpedoes
50 tons for catapult and two aircraft
9 tons FC gear

1948 Refit Notes:
Replacement of 100mm mounts with 90mm L60 mounts
Modernisation of 40mm mounts with Hazemeyer IV
Replacement of 20mm with 23mm with Hazemeyer IV
Refurbishment of internal fittings for life extension
Removal of catapult and aircraft
Addition of two Signaal M47 gunnery RDF sets
Addition of Phillips Mk.V surface/aerial search RDF set