You are not logged in.

Dear visitor, welcome to WesWorld. If this is your first visit here, please read the Help. It explains in detail how this page works. To use all features of this page, you should consider registering. Please use the registration form, to register here or read more information about the registration process. If you are already registered, please login here.

1

Sunday, April 30th 2017, 2:57pm

Netherlands Ships for 1949

The four Ameland Class cruisers built in the 1920s but refitted in 1940 with new machinery in an attempt to improve the armour are getting long in the tooth and need replacing. In 1949 four new light cruisers will be laid down to replace them. The Province II Class is very similar to the Province Class of 1945 but the new Cockerill 90mm automatic twin mount is fitted in C, X and two beam positions and the 57mm guns have been replaced with just 40mm. The new Hazemeyer V mount is effectively an OTL STAAG with an integral ranging-radar. The belt has been thinned a bit to allow for an extra 10mm of deck armour. Most Dutch cruisers have thin armour but these new ships will probably be the best armoured.

Province Class, Netherlands Light Cruiser laid down 1949

Displacement:
8,264 t light; 8,719 t standard; 9,934 t normal; 10,906 t full load

Dimensions: Length overall / water x beam x draught
565.22 ft / 557.74 ft x 59.06 ft x 21.33 ft (normal load)
172.28 m / 170.00 m x 18.00 m x 6.50 m

Armament:
8 - 5.98" / 152 mm guns (4x2 guns), 106.92lbs / 48.50kg shells, 1945 Model
Dual purpose guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
4 - 3.54" / 90.0 mm guns (2x2 guns), 24.25lbs / 11.00kg shells, 1947 Model
Automatic rapid fire guns in deck mounts with hoists
on centreline ends, evenly spread, all raised mounts
4 - 3.54" / 90.0 mm guns (2x2 guns), 24.25lbs / 11.00kg shells, 1947 Model
Automatic rapid fire guns in deck mounts with hoists
on side, all amidships
16 - 1.57" / 40.0 mm guns (8x2 guns), 1.94lbs / 0.88kg shells, 1949 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
Weight of broadside 1,080 lbs / 490 kg
Shells per gun, main battery: 400
6 - 24.0" / 609.6 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.15" / 80 mm 410.11 ft / 125.00 m 9.84 ft / 3.00 m
Ends: Unarmoured
Main Belt covers 113 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 4.72" / 120 mm 2.95" / 75 mm 2.95" / 75 mm
2nd: 0.98" / 25 mm 0.59" / 15 mm 1.97" / 50 mm
3rd: 0.98" / 25 mm 0.59" / 15 mm 1.97" / 50 mm
4th: 0.59" / 15 mm 0.39" / 10 mm -

- Armour deck: 2.76" / 70 mm, Conning tower: 1.97" / 50 mm

Machinery:
Oil fired boilers, steam turbines,
Electric motors, 2 shafts, 84,500 shp / 63,037 Kw = 33.03 kts
Range 12,000nm at 15.00 kts
Bunker at max displacement = 2,186 tons

Complement:
496 - 646

Cost:
£5.277 million / $21.106 million

Distribution of weights at normal displacement:
Armament: 138 tons, 1.4 %
Armour: 1,995 tons, 20.1 %
- Belts: 521 tons, 5.2 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 296 tons, 3.0 %
- Armour Deck: 1,158 tons, 11.7 %
- Conning Tower: 20 tons, 0.2 %
Machinery: 2,043 tons, 20.6 %
Hull, fittings & equipment: 3,738 tons, 37.6 %
Fuel, ammunition & stores: 1,670 tons, 16.8 %
Miscellaneous weights: 350 tons, 3.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
15,165 lbs / 6,879 Kg = 141.5 x 6.0 " / 152 mm shells or 1.9 torpedoes
Stability (Unstable if below 1.00): 1.18
Metacentric height 3.1 ft / 0.9 m
Roll period: 14.1 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.31
Seaboat quality (Average = 1.00): 1.13

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.495
Length to Beam Ratio: 9.44 : 1
'Natural speed' for length: 27.09 kts
Power going to wave formation at top speed: 60 %
Trim (Max stability = 0, Max steadiness = 100): 44
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.89 ft / 8.50 m
- Forecastle (20 %): 23.62 ft / 7.20 m
- Mid (50 %): 20.01 ft / 6.10 m
- Quarterdeck (15 %): 20.01 ft / 6.10 m
- Stern: 20.01 ft / 6.10 m
- Average freeboard: 21.62 ft / 6.59 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 83.7 %
- Above water (accommodation/working, high = better): 152.0 %
Waterplane Area: 22,716 Square feet or 2,110 Square metres
Displacement factor (Displacement / loading): 132 %
Structure weight / hull surface area: 98 lbs/sq ft or 477 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 1.91
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

Class Names: Texel, Terschellng, Ameland, Vlieland

Misc Weight:
118 tons to sim automatic main armament (29.5 tons per turret to equal 56.5 real weight)
16 tons to sim automatic 90mm mounts (4 tons per mount)
16 tons for 40mm Hazemeyer V mounts (2 tons per mount)
15 tons for torpedoes
60 tons for RDF sets (2 main directors, 4 secondary directors, surface search and aerial search)
50 tons for command spaces
75 tons growth


The four Windmill Class CLAA which have a very unusual and probably very cramped layout (not to mention the .90 hull strength) with their old 1920s guns on a modern-ish hull are looking tired.
The 1949 SLEP will change all the armament but will make no other structural changes. The result is more stability and a very potent fit of guns with lots of DAKKKA!!!

Windmill Class, Netherlands AA Cruiser laid down 1938

Displacement:
5,780 t light; 6,026 t standard; 6,798 t normal; 7,416 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:
8 - 4.53" / 115 mm guns (4x2 guns), 52.91lbs / 24.00kg shells, 1944 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread, 1 raised mount - superfiring
4 - 2.24" / 57.0 mm guns (2x2 guns), 5.73lbs / 2.60kg shells, 1949 Model
Anti-aircraft guns in deck mounts
on side, all amidships
4 - 2.24" / 57.0 mm guns (2x2 guns), 5.73lbs / 2.60kg shells, 1949 Model
Anti-aircraft guns in deck mounts
on centreline ends, evenly spread, all raised mounts
8 - 1.57" / 40.0 mm guns (4x2 guns), 1.94lbs / 0.88kg shells, 1949 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
8 - 0.91" / 23.0 mm guns (4x2 guns), 0.44lbs / 0.20kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 488 lbs / 221 kg
Shells per gun, main battery: 380
8 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2.95" / 75 mm 426.51 ft / 130.00 m 10.66 ft / 3.25 m
Ends: Unarmoured
Main Belt covers 119 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.97" / 50 mm 0.98" / 25 mm 1.97" / 50 mm
2nd: 0.59" / 15 mm 0.39" / 10 mm -
3rd: 0.59" / 15 mm 0.39" / 10 mm -
4th: 0.59" / 15 mm 0.39" / 10 mm -
5th: 0.39" / 10 mm - -

- Armour deck: 1.38" / 35 mm, Conning tower: 2.95" / 75 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 73,390 shp / 54,749 Kw = 34.00 kts
Range 8,515nm at 15.00 kts
Bunker at max displacement = 1,390 tons

Complement:
373 - 486

Cost:
£2.983 million / $11.934 million

Distribution of weights at normal displacement:
Armament: 54 tons, 0.8 %
Armour: 1,084 tons, 15.9 %
- Belts: 541 tons, 8.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 42 tons, 0.6 %
- Armour Deck: 479 tons, 7.0 %
- Conning Tower: 23 tons, 0.3 %
Machinery: 2,010 tons, 29.6 %
Hull, fittings & equipment: 2,505 tons, 36.8 %
Fuel, ammunition & stores: 1,018 tons, 15.0 %
Miscellaneous weights: 127 tons, 1.9 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
7,506 lbs / 3,405 Kg = 161.8 x 4.5 " / 115 mm shells or 1.2 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 2.4 ft / 0.7 m
Roll period: 13.7 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.20
Seaboat quality (Average = 1.00): 1.08

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): 65
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 (19.75 ft / 6.02 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: 18.13 ft / 5.53 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 105.6 %
- Above water (accommodation/working, high = better): 128.6 %
Waterplane Area: 18,771 Square feet or 1,744 Square metres
Displacement factor (Displacement / loading): 120 %
Structure weight / hull surface area: 80 lbs/sq ft or 390 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.43
- Overall: 0.98
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform

Average deck thickness 32.04mm, over 130mm citadel is 38mm thick

1949 SLEP Refit Notes
Replacement of 125mm twin mounts with 115mm twin DP mounts
Replacement of 125mm single mounts with 57mm Hazemeyer V twin mounts
Replacement of 40mm quad mounts in C and X positions with 57mm Hazemeyer V
Replacement of 40mm quad mountswith 40mm Hazemeyer V twin mounts
Replacement of 23mm single mounts with twin mounts
21in torpedoes replaced by 24in torpedoes
Catapult and aircraft removed
Refurbishment of internal fittings for life extension

Misc Weight
20 tons for Hazemeyer V mounts (2 tons per mount)
15 tons for torpedoes
33 tons for command spaces
45 tons for radar
35 tons for growth