Q4 Refits

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Kaiser Kirk

Lightbringer and former European Imperialist

Posts: 3,605

Monday, March 17th 2008, 2:36am

Q4 Refits

In Q4 the Dutch want to modify the partially-complete Boerentange Class, commence the Service Life refits of the De Rutyer Class and take the second Hund Class Collier and convert her to a general repair ship. I will deal with that last one later.

Just want to put these refits up before I put them in my Q4 SIM report.

First, the Boerentange and Narden
They are 46% completed.
I want to blister the hulls by 1.5m on each side, filling the voids with fuel, and replace the main belt with a thicker main belt of the same extent.
As construction continues, the conning tower, barbettes and turret faces will be substantially thicker than initially planned.
Miscellaneous weight will be increased.

Note that engine power and range have been held the same as the original
10,285shp. 1,024 bunker

reconstruction fee should be 25%* 3,397 tons already invested = 850 tons
And then there will be that 5,024 to finish each one.

Final product :

Quoted

Boerentange, Netherlands Coast Defence Ship laid down 1933

Displacement:
8,403 t light; 9,048 t standard; 10,072 t normal; 10,891 t full load

Dimensions: Length overall / water x beam x draught
400.26 ft / 393.70 ft x 70.87 ft (Bulges 79.07 ft) x 21.65 ft (normal load)
122.00 m / 120.00 m x 21.60 m (Bulges 24.10 m) x 6.60 m

Armament:
6 - 11.02" / 280 mm guns (2x3 guns), 793.66lbs / 360.00kg shells, 1919 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
4 - 4.92" / 125 mm guns (2x2 guns), 59.52lbs / 27.00kg shells, 1926 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread, all raised mounts
8 - 4.92" / 125 mm guns (4x2 guns), 59.59lbs / 27.03kg shells, 1926 Model
Dual purpose guns in deck mounts with hoists
on side, evenly spread
24 - 1.57" / 40.0 mm guns (6x4 guns), 1.94lbs / 0.88kg shells, 1933 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
8 - 0.91" / 23.0 mm guns (4x2 guns), 0.37lbs / 0.17kg shells, 1934 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
Weight of broadside 5,526 lbs / 2,507 kg
Shells per gun, main battery: 140

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 11.0" / 280 mm 255.91 ft / 78.00 m 9.84 ft / 3.00 m
Ends: 1.18" / 30 mm 137.76 ft / 41.99 m 9.84 ft / 3.00 m
Upper: 1.18" / 30 mm 255.91 ft / 78.00 m 10.17 ft / 3.10 m
Main Belt covers 100 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 12.2" / 310 mm 7.09" / 180 mm 10.0" / 255 mm
2nd: 1.18" / 30 mm 0.79" / 20 mm 0.98" / 25 mm
3rd: 1.18" / 30 mm 0.79" / 20 mm 0.98" / 25 mm
4th: 0.39" / 10 mm 0.83" / 21 mm -
5th: 0.39" / 10 mm - -

- Armour deck: 3.35" / 85 mm, Conning tower: 11.02" / 280 mm

Machinery:
Diesel Internal combustion generators,
Electric motors, 2 shafts, 10,285 shp / 7,673 Kw = 17.62 kts
Range 7,835nm at 15.00 kts
Bunker at max displacement = 1,843 tons

Complement:
502 - 653

Cost:
£3.963 million / $15.853 million

Distribution of weights at normal displacement:
Armament: 598 tons, 5.9 %
Armour: 3,481 tons, 34.6 %
- Belts: 1,421 tons, 14.1 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 771 tons, 7.7 %
- Armour Deck: 1,178 tons, 11.7 %
- Conning Tower: 111 tons, 1.1 %
Machinery: 300 tons, 3.0 %
Hull, fittings & equipment: 3,875 tons, 38.5 %
Fuel, ammunition & stores: 1,669 tons, 16.6 %
Miscellaneous weights: 150 tons, 1.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
15,559 lbs / 7,057 Kg = 23.2 x 11.0 " / 280 mm shells or 3.2 torpedoes
Stability (Unstable if below 1.00): 1.19
Metacentric height 4.1 ft / 1.3 m
Roll period: 16.3 seconds
Steadiness - As gun platform (Average = 50 %): 75 %
- Recoil effect (Restricted arc if above 1.00): 0.40
Seaboat quality (Average = 1.00): 1.51

Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.523
Length to Beam Ratio: 4.98 : 1
'Natural speed' for length: 19.84 kts
Power going to wave formation at top speed: 45 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): -20.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.85 ft / 6.66 m
- Forecastle (20 %): 16.99 ft / 5.18 m (12.14 ft / 3.70 m aft of break)
- Mid (50 %): 12.14 ft / 3.70 m
- Quarterdeck (15 %): 12.14 ft / 3.70 m
- Stern: 12.14 ft / 3.70 m
- Average freeboard: 13.50 ft / 4.11 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 58.3 %
- Above water (accommodation/working, high = better): 87.5 %
Waterplane Area: 18,987 Square feet or 1,764 Square metres
Displacement factor (Displacement / loading): 112 %
Structure weight / hull surface area: 144 lbs/sq ft or 702 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.91
- Longitudinal: 2.21
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Loosely based on an expansion of the 1917 Sverige class of 6,852 tons, with the 125mm taking the place of the 6" mounts, and an expanded beam to support the triple 11" vs. Sverige's twins.

Armor :
Upper and end armor is merely designed to stop HE
Belt armor is +1m above WL to -2m below WL, Upper belt is between +1m and average freeboard of 4.12m.

85.2mm Deck armor comes to top of belt. Deck is 100mm over vitals and 30mm over ends.

21mm "Other" armor on 40mm mounts is to add a ton/mount for Hazemeyer stablization gear.

Shells
50 AP
40 SAP
40 HE
10 practice

Misc :
10 tons for extra director and CIC
50 tons for seaplane & catapult on fantail

6 tons 'creep' 40hp motors arranged as fore/aft thrusters, and two stern motors.
84 tons misc

Second, the De Rutyer Class, De Rutyer and Tromp .

During the 1935-6 refit, the secondary and tertiary batteries were altered and extensive light AA added.

Small 0.75m external bulges were added to provide some external venting for the initial explosion.

The external 80mm decapping plate was replaced with a larger and more extensive external belt of 80mm armor, extending 2m further down the hull all along the waterline, and thinning to 40mm towards the ends of the vessel, making the waterline splinterproof.

The aircraft area was revamped and the hanger enlarged. 4 Float planes- 2 fighter, 2 scout, can now be stowed (125t)

Magazines were re-arranged and modern fire control, CIC, and radar systems installed (150t).

More dedicated room made for Flag facilities (150t)

5 installations of 4-ton auxilary diesel engines fitted, each with 1 ton of fuel. (25t) These provide alternate power for the hydraulics for the A&B, X&Y, Port 2ndardy, Starboard secondary, and fire control (radars, hazemiejer mounts, etc).

100t left over

Note that engine power and range have been held the same as the original
101,246shp. 3,639 bunker

Cost : 8,074 tons

Quoted

De Rutyer, Holland Battleship laid down 1919

Displacement:
32,295 t light; 34,180 t standard; 37,819 t normal; 40,730 t full load

Dimensions: Length overall / water x beam x draught
734.94 ft / 721.78 ft x 95.14 ft (Bulges 100.07 ft) x 31.17 ft (normal load)
224.01 m / 220.00 m x 29.00 m (Bulges 30.50 m) x 9.50 m

Armament:
9 - 13.58" / 345 mm guns (3x3 guns), 1,501.35lbs / 681.00kg shells, 1918 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
16 - 5.98" / 152 mm guns (8x2 guns), 107.15lbs / 48.60kg shells, 1926 Model
Breech loading guns in turrets (on barbettes)
on side, all amidships, 4 raised mounts - superfiring
16 - 3.94" / 100 mm guns (6 mounts), 30.51lbs / 13.84kg shells, 1928 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
36 - 1.57" / 40.0 mm guns (8 mounts), 1.95lbs / 0.89kg shells, 1933 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
20 - 0.91" / 23.0 mm guns (16 mounts), 0.37lbs / 0.17kg shells, 1934 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 15,792 lbs / 7,163 kg
Shells per gun, main battery: 125

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 11.8" / 300 mm 413.39 ft / 126.00 m 13.12 ft / 4.00 m
Ends: 1.57" / 40 mm 308.07 ft / 93.90 m 19.69 ft / 6.00 m
Upper: 3.15" / 80 mm 413.39 ft / 126.00 m 19.69 ft / 6.00 m
Main Belt covers 88 % of normal length

- Torpedo Bulkhead and Bulges:
2.36" / 60 mm 413.39 ft / 126.00 m 24.61 ft / 7.50 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 15.4" / 390 mm 8.86" / 225 mm 15.0" / 380 mm
2nd: 3.94" / 100 mm 0.98" / 25 mm 0.98" / 25 mm
3rd: 0.59" / 15 mm 0.20" / 5 mm -
4th: 0.39" / 10 mm 0.83" / 21 mm -
5th: 0.39" / 10 mm - -

- Armour deck: 4.92" / 125 mm, Conning tower: 4.72" / 120 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 101,246 shp / 75,529 Kw = 27.23 kts
Range 11,115nm at 15.00 kts
Bunker at max displacement = 6,550 tons

Complement:
1,355 - 1,762

Cost:
£6.670 million / $26.680 million

Distribution of weights at normal displacement:
Armament: 1,695 tons, 4.5 %
Armour: 12,750 tons, 33.7 %
- Belts: 4,304 tons, 11.4 %
- Torpedo bulkhead: 889 tons, 2.4 %
- Armament: 2,921 tons, 7.7 %
- Armour Deck: 4,522 tons, 12.0 %
- Conning Tower: 115 tons, 0.3 %
Machinery: 3,595 tons, 9.5 %
Hull, fittings & equipment: 13,705 tons, 36.2 %
Fuel, ammunition & stores: 5,524 tons, 14.6 %
Miscellaneous weights: 550 tons, 1.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
53,598 lbs / 24,312 Kg = 42.8 x 13.6 " / 345 mm shells or 8.3 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 6.2 ft / 1.9 m
Roll period: 16.9 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.58
Seaboat quality (Average = 1.00): 1.10

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.588
Length to Beam Ratio: 7.21 : 1
'Natural speed' for length: 26.87 kts
Power going to wave formation at top speed: 50 %
Trim (Max stability = 0, Max steadiness = 100): 46
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 24.61 ft / 7.50 m
- Forecastle (20 %): 21.62 ft / 6.59 m
- Mid (68 %): 21.62 ft / 6.59 m
- Quarterdeck (22 %): 13.62 ft / 4.15 m
- Stern: 13.62 ft / 4.15 m
- Average freeboard: 19.70 ft / 6.00 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 85.7 %
- Above water (accommodation/working, high = better): 146.1 %
Waterplane Area: 49,666 Square feet or 4,614 Square metres
Displacement factor (Displacement / loading): 111 %
Structure weight / hull surface area: 193 lbs/sq ft or 944 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.20
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

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