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41

Friday, September 16th 2016, 4:49pm

Quoted

Will you operate jets from those carriers? If so you may need powerful catapults. Are they available? I may have missed them browsing your sim stats....

Well, if you have looked at the data below the sim, you would have seen...

Quoted

Two BAH.II steam catapults with capacity for 40,000lbs aircraft

... and...

Quoted

500 tons for steam catapults

... which comes out at 250 tons per catapult. That is 10 times the number that we agreed upon at the start of the sim for a catapult and crane. To me it makes sense and since Hood's sim I added it to the sim of my 1948 carrier.

Quoted

Those cruisers will reuse those gunboat turres - whole turret - or "just" reuse the guns but with new mountings (elevation etc.)? So no way making the autoloader or any other modification? (Btw, is it possible at all to modify a gun so much you can have a heavy autoloader from a standard gun/rifle?)

Not sure what you are thinking of but when I look at that cruiser post and then at that gunboat post, it is obvious that the 9.2" guns of those gunboats are the ones being re-used. I doubt it that the 4" DP guns are being turned into 4.5" Automatics.

Quoted

I have my doubts that you could recycle a non-autoloading naval gun into an autoloader, particularly at a bore size as large as 9.2"; and I remain skeptical that you can make a workable autoloader of this caliber anyway. So much of the internal workings of the gun would have to be replaced that I doubt it would really be cost effective.

9.2" automatic? I'm pretty sure it says:

Quoted

8 - 9.20" / 234 mm guns (4x2 guns), 510.00lbs / 231.33kg shells, 1936 Model
Breech loading guns in turrets (on barbettes)

There is no mention of them being automatic.

42

Friday, September 16th 2016, 5:00pm

Quoted

I have my doubts that you could recycle a non-autoloading naval gun into an autoloader, particularly at a bore size as large as 9.2"; and I remain skeptical that you can make a workable autoloader of this caliber anyway. So much of the internal workings of the gun would have to be replaced that I doubt it would really be cost effective.

9.2" automatic? I'm pretty sure it says:

Quoted

8 - 9.20" / 234 mm guns (4x2 guns), 510.00lbs / 231.33kg shells, 1936 Model
Breech loading guns in turrets (on barbettes)

There is no mention of them being automatic.

I know that's what the sim says. I was responding to Hoo's question here:

Those cruisers will reuse those gunboat turres - whole turret - or "just" reuse the guns but with new mountings (elevation etc.)? So no way making the autoloader or any other modification? (Btw, is it possible at all to modify a gun so much you can have a heavy autoloader from a standard gun/rifle?)

43

Friday, September 16th 2016, 5:13pm

Unlike the RCN, the RN does not use an autoloader for any of its 9.2in guns (I think the RCN uses them, I could be wrong though). Neither the older Princess Royal or Iron Duke uses autoloaders. The turrets will be used more or less as is, though as you point out they may need additional elevation, though I suspect the General Class gunboats had enough elevation to lob shells far enough inland for counter-battery work and fort-smashing.
Considering the SS report lacks any mention of automatic main guns and msic weight for autoloading equipment its a safe bet there isn't any for the main guns.

As Walter alluded to above, the carriers will have steam catapults at 250 tons a pop.

Not fully decided the new carrier name, might be HMS Nonsuch.

44

Friday, September 16th 2016, 5:14pm

Quoted

I know that's what the sim says. I was responding to Hoo's question here

Might have helped if you indicated that in your post because right now to me it comes over as if you also believe that the 9.2" guns will be automatics.

45

Friday, September 16th 2016, 5:24pm

Really? I can't see how.

This is what I said:

Quoted

In 1948 I'm thinking of scrapping the freakish General Class 9.2in armed gunboats and re-using the turrets in two new heavy cruisers based on the Northumberland Class hull.

The result is not cheap, but cheaper than the Princess Royals and Iron Dukes and although they share the same gun, the older ships have triple mounts. These cruisers would be primarily used as Station Flagships overseas.


No mention of autoloaders at all, explicit mention of using the turret, same 9.2in gun as the other 9.2in CAs (none of which have autoloading but their turrets were triples mounts and I'm stuck with twins because of the use of the aforementioned gunboat turrets).

46

Friday, September 16th 2016, 5:30pm

Quoted

Unlike the RCN, the RN does not use an autoloader for any of its 9.2in guns (I think the RCN uses them, I could be wrong though).

I could be mistaken, but I thought that the 7.5" was the largest caliber of automatic guns.

Quoted

The turrets will be used more or less as is, though as you point out they may need additional elevation, though I suspect the General Class gunboats had enough elevation to lob shells far enough inland for counter-battery work and fort-smashing.

They're about 10 years or so old, so I think that the mounts may be modern enough to have good enough elevation for them to work that no alterations are needed.

Quoted

Considering the SS report lacks any mention of automatic main guns and msic weight for autoloading equipment its a safe bet there isn't any for the main guns.

I don't think that there is a miscellaneous weights breakdown to tell us that even if the main guns were automatics. It only says this below the sim data:

Quoted

Class Names: HMS ? & ?

RDF Sets
One Aerial Search Type 971 set
One Surface Search Type 970 set
One Height-Finder and Surface Search Type 277 set
Five Gunnery Director Type 988 fitted directors with Tallboy consoles and Flyplane (two primary and three secondary directors)
Four Close-Range Blind Fire (CRBF) directors with Type 289 fitted
HF/DF Type 292
Passive Radio Intercept Type 293 series
Passive RDF Intercept Type 297
Two RU-series jammers
ASDIC Type 146

... might want to add the breakdown. :)

Quoted

Not fully decided the new carrier name, might be HMS Nonsuch.

What?! Such a silly name?!? Your carrier should have a GLORIOUS name!!! :D

47

Saturday, September 17th 2016, 2:26pm

There have been nine previous ships bearing the name HMS Nonsuch since 1603, the origin of the name is probably from Henry VIII's Nonsuch Palace in Surrey built from 1538.
Nonsuch means no equal, a fitting name for one of the finest carriers to ever grace Wesworld. :P

48

Saturday, September 17th 2016, 3:59pm

Quoted

Nonsuch means no equal

Without looking at any other ship threads... Colossus, Powerful and Terrible... 3 ships that are equal to Nonsuch meaning that the 'Non' part of the name is invalid and you end up with HMS Such. :)

Quoted

a fitting name for one of the finest carriers to ever grace Wesworld

Well, considering how you messed up the miscellaneous weights breakdown, you'd be lucky if it were considered to be a top 100 Wesworld carrier design. :D

49

Friday, September 30th 2016, 1:50am

Unlike the RCN, the RN does not use an autoloader for any of its 9.2in guns (I think the RCN uses them, I could be wrong though).

When doing the master plan for the RCN's final gun evolutions, it was determined (OOC) that a 9.2" Automatic would not be a viable weapon. No doubt the RCN has tinkered with the concept anyway, but it has not resulted in a deployable weapons system. The 9.2" guns in service on the Serapis class are the same weapons in service with the RN.


Not fully decided the new carrier name, might be HMS Nonsuch.

Hate to keep being a spoiler, but there's also a fairly prominent HMCS Nonsuch.

50

Friday, September 30th 2016, 1:57am


Quoted

The turrets will be used more or less as is, though as you point out they may need additional elevation, though I suspect the General Class gunboats had enough elevation to lob shells far enough inland for counter-battery work and fort-smashing.

They're about 10 years or so old, so I think that the mounts may be modern enough to have good enough elevation for them to work that no alterations are needed.


I don't think I ever specified the exact elevation degrees for any of the Canadian weapons, but the 7.5" and 9.2" guns were designed to be capable of firing superheavy shells at high elevation, based on US practice....and the fact that it was easier to use lighter shells at lower angles on a turret so equipped, than try and use heavier shells at higher angles if not so designed.

51

Friday, September 30th 2016, 3:20am

Quoted

Hate to keep being a spoiler, but there's also a fairly prominent HMCS Nonsuch.

HMS Such it is then. :)

52

Friday, September 30th 2016, 9:59am

Well whatever, I'll probably just choose another OTL Colossus/Majestic Class name.

Thanks Shin for the background on the Canadian guns, my memory of these things is never too hot.

53

Saturday, October 1st 2016, 11:37am

HMS Vengeance looks the likely new name.

54

Sunday, April 2nd 2017, 12:17pm

'HMS Bric' & 'HMS Brac'

I will be laying down two purpose-built test articles this year on which to conduct various armour experiments.
The inspiration comes from a few such examples built in OTL and these are intended as full-scale models to investigate a number of things.
I had planned to stick a complete YARD propulsion unit in one of these but it came out wonky, I think perhaps a third article will follow in 1949.

I've plenty of surplus tonnage to soak up so money is no object, hence the size of these metal boxes. Might design some bespoke tugs to tow these too!


Job 518, Great Britain Test Article No.1 laid down 1948

Displacement:
6,384 t light; 6,514 t standard; 6,514 t normal; 6,514 t full load

Dimensions: Length overall / water x beam x draught
150.00 ft / 150.00 ft x 76.00 ft x 20.00 ft (normal load)
45.72 m / 45.72 m x 23.16 m x 6.10 m

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.00" / 76 mm 100.00 ft / 30.48 m 12.00 ft / 3.66 m
Ends: Unarmoured
Upper: 1.25" / 32 mm 100.00 ft / 30.48 m 10.00 ft / 3.05 m
Main Belt covers 103 % of normal length

- Torpedo Bulkhead:
1.50" / 38 mm 100.00 ft / 30.48 m 10.00 ft / 3.05 m

- Armour deck: 6.00" / 152 mm, Conning tower: 12.00" / 305 mm

Machinery:
Immobile floating battery

Complement:
362 - 471

Cost:
£1.666 million / $6.663 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Armour: 1,732 tons, 26.6 %
- Belts: 258 tons, 4.0 %
- Torpedo bulkhead: 56 tons, 0.9 %
- Armament: 0 tons, 0.0 %
- Armour Deck: 1,328 tons, 20.4 %
- Conning Tower: 90 tons, 1.4 %
Machinery: 0 tons, 0.0 %
Hull, fittings & equipment: 3,704 tons, 56.9 %
Fuel, ammunition & stores: 130 tons, 2.0 %
Miscellaneous weights: 948 tons, 14.6 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
41,428 lbs / 18,791 Kg = 383.6 x 6 " / 152 mm shells or 14.9 torpedoes
Stability (Unstable if below 1.00): 1.19
Metacentric height 4.6 ft / 1.4 m
Roll period: 14.9 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has a flush deck
Block coefficient: 1.000
Length to Beam Ratio: 1.97 : 1
'Natural speed' for length: 12.25 kts
Power going to wave formation at top speed: 0 %
Trim (Max stability = 0, Max steadiness = 100): 35
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 20.00 ft / 6.10 m
- Forecastle (5 %): 20.00 ft / 6.10 m
- Mid (50 %): 20.00 ft / 6.10 m
- Quarterdeck (5 %): 20.00 ft / 6.10 m
- Stern: 20.00 ft / 6.10 m
- Average freeboard: 20.00 ft / 6.10 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 23.9 %
- Above water (accommodation/working, high = better): 125.9 %
Waterplane Area: 11,966 Square feet or 1,112 Square metres
Displacement factor (Displacement / loading): 243 %
Structure weight / hull surface area: 241 lbs/sq ft or 1,175 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 2.58
- Longitudinal: 34.37
- Overall: 3.35
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, rides out heavy weather easily

Conning Tower for optional manned position and some electrical recording equipment

Deck system consists of 1x 3in main deck, 1x 0.5in anti-spliter deck and 1x 2.5in deck simulating top of magazine box protection

Misc Weight:
200 tons for electronic and misc equipment
500 tons for pumping gear
248 tons for four transverse 1.5in armoured buklheads (56x20ft)



Job 519, Great Britain Test Article No.2 laid down 1948

Displacement:
10,080 t light; 10,286 t standard; 10,286 t normal; 10,286 t full load

Dimensions: Length overall / water x beam x draught
150.00 ft / 150.00 ft x 80.00 ft x 30.00 ft (normal load)
45.72 m / 45.72 m x 24.38 m x 9.14 m

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Ends: Unarmoured

- Torpedo Bulkhead:
3.54" / 90 mm 120.00 ft / 36.58 m 28.00 ft / 8.53 m

- Armour deck: 2.50" / 64 mm, Conning tower: 12.00" / 305 mm

Machinery:
Immobile floating battery

Complement:
509 - 663

Cost:
£2.630 million / $10.520 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Armour: 1,145 tons, 11.1 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 440 tons, 4.3 %
- Armament: 0 tons, 0.0 %
- Armour Deck: 583 tons, 5.7 %
- Conning Tower: 122 tons, 1.2 %
Machinery: 0 tons, 0.0 %
Hull, fittings & equipment: 7,987 tons, 77.7 %
Fuel, ammunition & stores: 206 tons, 2.0 %
Miscellaneous weights: 948 tons, 9.2 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
80,119 lbs / 36,341 Kg = 741.8 x 6 " / 152 mm shells or 42.5 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 5.0 ft / 1.5 m
Roll period: 15.1 seconds
Steadiness - As gun platform (Average = 50 %): 64 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has a flush deck
Block coefficient: 1.000
Length to Beam Ratio: 1.88 : 1
'Natural speed' for length: 12.25 kts
Power going to wave formation at top speed: 0 %
Trim (Max stability = 0, Max steadiness = 100): 32
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 20.00 ft / 6.10 m
- Forecastle (5 %): 20.00 ft / 6.10 m
- Mid (50 %): 20.00 ft / 6.10 m
- Quarterdeck (5 %): 20.00 ft / 6.10 m
- Stern: 20.00 ft / 6.10 m
- Average freeboard: 20.00 ft / 6.10 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 15.9 %
- Above water (accommodation/working, high = better): 94.3 %
Waterplane Area: 12,596 Square feet or 1,170 Square metres
Displacement factor (Displacement / loading): 492 %
Structure weight / hull surface area: 468 lbs/sq ft or 2,284 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 4.39
- Longitudinal: 73.34
- Overall: 5.81
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Excellent seaboat, comfortable, rides out heavy weather easily

Conning Tower for optional manned position and some electrical recording equipment

Torpedo defence system consists of 1x 0.875in outer bulkhead, 6ft 6in air space, 1x 0.375in bulkhead, 4ft 6in liquid space, 1x 0.375in bulkhead, 4ft 6in liquid space, 1x 0.75in bulkhead, 4 ft 0in air space, 1x 1.5in inner buklhead = totalling 16ft 6in depth

Misc Weight:
200 tons for electronic and misc equipment
500 tons for pumping gear
248 tons for four transverse 1.5in armoured buklheads (40x28ft)

55

Monday, April 3rd 2017, 1:36am

<The Philippines raise their hands>

Well, if you've tonnage to spare... :D

56

Monday, April 3rd 2017, 4:54am

Yes, Britain should do the right thing and make a donation to the Philippines. :)

57

Saturday, April 8th 2017, 2:48pm

The Tugs...

Here are the tugs to go with the test articles, although they will be used as heavy seagoing tugs too.
The design is based on an OTL design, albeit it slightly younger design and the specs conform broadly to it so I'm not bothered about the excess hull weight as the displacement, performance and machinery specs are correct. The crew would be 31, not the hundred or so SS assumes necessary based on he hullspace!

Agile Class, Great Britain Seagoing Tug laid down 1948

Displacement:
1,072 t light; 1,100 t standard; 1,358 t normal; 1,564 t full load

Dimensions: Length overall / water x beam x draught
171.96 ft / 165.00 ft x 40.00 ft x 18.00 ft (normal load)
52.41 m / 50.29 m x 12.19 m x 5.49 m

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 4,500 shp / 3,357 Kw = 17.98 kts
Range 12,000nm at 12.00 kts
Bunker at max displacement = 465 tons

Complement:
111 - 145

Cost:
£0.395 million / $1.578 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Machinery: 110 tons, 8.1 %
Hull, fittings & equipment: 812 tons, 59.8 %
Fuel, ammunition & stores: 285 tons, 21.0 %
Miscellaneous weights: 150 tons, 11.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
3,712 lbs / 1,684 Kg = 34.4 x 6 " / 152 mm shells or 2.0 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 1.5 ft / 0.5 m
Roll period: 13.7 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 1.05

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.400
Length to Beam Ratio: 4.13 : 1
'Natural speed' for length: 12.85 kts
Power going to wave formation at top speed: 67 %
Trim (Max stability = 0, Max steadiness = 100): 47
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 2.00 ft / 0.61 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 18.50 ft / 5.64 m
- Forecastle (17 %): 16.00 ft / 4.88 m
- Mid (60 %): 14.50 ft / 4.42 m (8.00 ft / 2.44 m aft of break)
- Quarterdeck (15 %): 8.00 ft / 2.44 m
- Stern: 8.00 ft / 2.44 m
- Average freeboard: 12.65 ft / 3.85 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 39.7 %
- Above water (accommodation/working, high = better): 87.7 %
Waterplane Area: 4,063 Square feet or 377 Square metres
Displacement factor (Displacement / loading): 367 %
Structure weight / hull surface area: 114 lbs/sq ft or 558 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.90
- Longitudinal: 17.55
- Overall: 2.37
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is cramped

Class Names: RFA Agile, Advice, Accord, Adroit

Miisc weight: 150 tons for towing and salvage gear etc.

58

Saturday, April 8th 2017, 6:02pm

Quoted

The crew would be 31, not the hundred or so SS assumes necessary based on he hullspace!

... and 31 being based on what?

Also, to be more correct it would be based on the below waterline hullspace as the crew value does not change when I change the hullspace by increasing or decreasing the freeboard. Whether the freeboard is 0 ft or 100 ft, I will still have the same crew value.

it is obvious that the vessel is not a warship so obviously those values SS gives are way off, but it is not a civilian merchant ship (1/10 crew) either or a naval transport (1/5 crew) or a submarine (1/2 crew). Maybe divide it by 4 so you would get a crew of 28-36?

59

Sunday, April 9th 2017, 10:29am

31 is based on the historic design, I can't see it being much higher and your ballpark figure is around the same.

Meanwhile here is an additional design for 1948, this has been moved forwards by the surplus tonnage available.
The Fleet Aircraft Direction Escort is based on the same OTL concept, albeit with a new hull rather than the conversions of Dido cruisers and Battle class destroyers attempted.

The Leopard uses a basic WW Battle class destroyer hull (basically a flush-deck OTL Daring) with one 4.5in mount removed and the majority of the superstructure and upper deck space given over to the sizable radar fit to direct carrier-based fighters to incoming aerial threats.
Each major carrier force will have two of these each, or each of six carrier squadrons one each. The newer carriers themselves also have such fits to direct their fighters and its possible for the FADE to extend the coverage and also act as AA HQ ships in non-carrier equipped naval forces, vectoring carrier-based airpower from neighbouring fleets. The ultimate aim would be a light-cruiser sized hull to enable 3-4 engagements but that is beyond the scope at the present and expensive too.
The Leopard also retains a full ASW suite too.


Leopard Class, Great Britain Fleet Aircraft Direction Escort (FADE) laid down 1948

Displacement:
2,005 t light; 2,099 t standard; 2,390 t normal; 2,622 t full load

Dimensions: Length overall / water x beam x draught
378.59 ft / 366.00 ft x 40.00 ft x 13.70 ft (normal load)
115.39 m / 111.56 m x 12.19 m x 4.18 m

Armament:
4 - 4.50" / 114 mm guns (2x2 guns), 45.00lbs / 20.41kg shells, 1945 Model
Automatic rapid fire guns in deck mounts with hoists
on centreline ends, evenly spread
8 - 1.57" / 40.0 mm guns (4x2 guns), 2.00lbs / 0.91kg shells, 1945 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 196 lbs / 89 kg
Shells per gun, main battery: 400

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.50" / 38 mm 1.00" / 25 mm 1.00" / 25 mm
2nd: 0.50" / 13 mm 0.50" / 13 mm -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 45,000 shp / 33,570 Kw = 34.02 kts
Range 5,800nm at 16.00 kts
Bunker at max displacement = 524 tons

Complement:
170 - 222

Cost:
£1.794 million / $7.174 million

Distribution of weights at normal displacement:
Armament: 29 tons, 1.2 %
Armour: 18 tons, 0.8 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 18 tons, 0.8 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 1,042 tons, 43.6 %
Hull, fittings & equipment: 716 tons, 30.0 %
Fuel, ammunition & stores: 385 tons, 16.1 %
Miscellaneous weights: 200 tons, 8.4 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
916 lbs / 415 Kg = 20.1 x 4.5 " / 114 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.30
Metacentric height 2.0 ft / 0.6 m
Roll period: 11.8 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.18
Seaboat quality (Average = 1.00): 1.11

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.417
Length to Beam Ratio: 9.15 : 1
'Natural speed' for length: 22.24 kts
Power going to wave formation at top speed: 69 %
Trim (Max stability = 0, Max steadiness = 100): 45
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.00 ft / 8.23 m
- Forecastle (20 %): 20.00 ft / 6.10 m
- Mid (45 %): 16.50 ft / 5.03 m
- Quarterdeck (15 %): 16.50 ft / 5.03 m
- Stern: 16.50 ft / 5.03 m
- Average freeboard: 18.20 ft / 5.55 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 160.5 %
- Above water (accommodation/working, high = better): 181.9 %
Waterplane Area: 9,455 Square feet or 878 Square metres
Displacement factor (Displacement / loading): 90 %
Structure weight / hull surface area: 38 lbs/sq ft or 185 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.67
- Overall: 0.59
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent

Class Names: HMS Leopard, Lynx, Puma, Cheetah, Tiger, Cougar

Misc weight includes:
ASDIC Type 148
Depth-Finding ASDIC Type 145
Passive ASDIC Type 147
One Aerial Search Type 971 set
Two Height-Finder Type 972 sets
One Target Indication Type 287Q set
One Surface Search Type 970 set
Gunnery Director Set Type 288 with Tallboy console and Flyplane
One Close-Range Blind Fire director with Type 289 RDF
VHF Direction Finder Type 295Q
Passive Radio Intercept Type 293 series
Passive Radar Intercept Type 297
Two RU-series jammers
2 Squid A/S mortar and ammunition

60

Monday, April 17th 2017, 10:27am

Another little job beginning in 1948 will be the rebuilding of the carrier HMS Eagle to make her into an interim strike carrier alongside HMS Ark Royal.
The work will be slightly more involved than HMS Ark Royal's refit in that the entire island will be rebuilt.

Current plans will see the four Colossus Class and Ark Royal and Eagle as the six main strike carriers using their steam catapults to send out heavy aircraft. The four Leviathans will serve as fleet units but more fighter oriented and during the 1950s will be brought up to Colossus standards, where upon the Ark and Eagle will retire. The Colossus class ships will replace the three Swiftsure Class ships.
Albion, Centaur and the three Ocean class carriers will serve as fighter-escorts and overseas station carriers. HMS Ocean, the current steam catapult testbed will remain a trials and training carrier.


HMS Eagle Carrier F, Great Britain Aircraft Carrier laid down 1937 (Engine 1948)

Displacement:
24,921 t light; 25,733 t standard; 28,412 t normal; 30,555 t full load

Dimensions: Length overall / water x beam x draught
757.65 ft / 750.00 ft x 94.75 ft x 28.50 ft (normal load)
230.93 m / 228.60 m x 28.88 m x 8.69 m

Armament:
16 - 4.50" / 114 mm guns (8x2 guns), 45.00lbs / 20.41kg shells, 1945 Model
Automatic rapid fire guns in deck mounts with hoists
on centreline ends, evenly spread, all raised mounts - superfiring
24 - 1.57" / 40.0 mm guns (4x6 guns), 2.00lbs / 0.91kg shells, 1946 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
24 - 1.57" / 40.0 mm guns (12x2 guns), 2.00lbs / 0.91kg shells, 1945 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
Weight of broadside 816 lbs / 370 kg
Shells per gun, main battery: 500

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.50" / 114 mm 480.00 ft / 146.30 m 16.00 ft / 4.88 m
Ends: Unarmoured
Main Belt covers 98 % of normal length

- Torpedo Bulkhead:
1.75" / 44 mm 480.00 ft / 146.30 m 26.50 ft / 8.08 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.50" / 38 mm 1.00" / 25 mm 2.00" / 51 mm
2nd: 1.00" / 25 mm 1.00" / 25 mm -
3rd: 0.50" / 13 mm 0.50" / 13 mm -

- Armour deck: 4.00" / 102 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 120,000 shp / 89,520 Kw = 31.37 kts
Range 12,000nm at 16.00 kts
Bunker at max displacement = 4,822 tons

Complement:
1,093 - 1,422

Cost:
£7.552 million / $30.207 million

Distribution of weights at normal displacement:
Armament: 121 tons, 0.4 %
Armour: 5,994 tons, 21.1 %
- Belts: 1,473 tons, 5.2 %
- Torpedo bulkhead: 824 tons, 2.9 %
- Armament: 84 tons, 0.3 %
- Armour Deck: 3,613 tons, 12.7 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 2,933 tons, 10.3 %
Hull, fittings & equipment: 8,674 tons, 30.5 %
Fuel, ammunition & stores: 3,491 tons, 12.3 %
Miscellaneous weights: 7,200 tons, 25.3 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
49,071 lbs / 22,258 Kg = 1,077.0 x 4.5 " / 114 mm shells or 7.8 torpedoes
Stability (Unstable if below 1.00): 1.09
Metacentric height 5.4 ft / 1.7 m
Roll period: 17.1 seconds
Steadiness - As gun platform (Average = 50 %): 74 %
- Recoil effect (Restricted arc if above 1.00): 0.06
Seaboat quality (Average = 1.00): 1.44

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.491
Length to Beam Ratio: 7.92 : 1
'Natural speed' for length: 31.90 kts
Power going to wave formation at top speed: 52 %
Trim (Max stability = 0, Max steadiness = 100): 51
Bow angle (Positive = bow angles forward): 12.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 36.00 ft / 10.97 m
- Forecastle (20 %): 24.00 ft / 7.32 m
- Mid (50 %): 24.00 ft / 7.32 m
- Quarterdeck (15 %): 24.00 ft / 7.32 m
- Stern: 24.00 ft / 7.32 m
- Average freeboard: 24.96 ft / 7.61 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 83.5 %
- Above water (accommodation/working, high = better): 204.2 %
Waterplane Area: 48,828 Square feet or 4,536 Square metres
Displacement factor (Displacement / loading): 142 %
Structure weight / hull surface area: 123 lbs/sq ft or 602 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.30
- Overall: 1.00
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
Good seaboat, rides out heavy weather easily

Upper hangar deck: 558 x 60 x 17.5ft
Lower hangar deck : 558 x 60 x 17.5ft
Served by two 40 x 33ft lifts with capacity for 25,000lbs
Arrestor gear of 8 wires, 1 trickle wire, 2 forward wires and two safety barriers

72 aircraft usually carried (6 x 12 aircraft squadrons) [after refit 60 aircraft only]

1947 Refit Notes
4.5in twin mounts replaced by Mk.VI twin mounts
Hydraulic catapults replaced by two BAH Mk.II steam catapults (115ft long)
Both lifts replaced with new 45 x 37ft lifts of 25,000lb capacity
Replacement of boilers and turbines with new YARD machinery units
Replacement of island superstructure with new design offering increased command and bridge space
New AIO installed in hull
Removal of four 6pdr twin mounts (due to new island)
Replacement of four remaining 6pdr twin mounts with four sextuple 2pdr mounts
Removal of two 2pdr twin mounts

Electronic equipment
One aerial search Type 971 set
Two height-finder Type 972 sets
One Type 975 target indication set
One Type 970 high-definition surface search set
Two Mk.VI directors with Type 288 with Tallboy barrage unit and Flyplane table
Six CRBF directors with Type 289
VHF Direction Finder Type 295Q
Passive Radio Interception Type 293 series
Passive RDF Interception Type 294
Four RU series RDF Jammers

Misc Weight
3600 tons for 60 aircraft
1500 tons for aircraft ammunition and spares
500 tons for steam catapults
300 tons for lifts
700 tons for hangar equipment and fire-fighting gear and partitions
120 tons for electronic equipment
200 tons for CIC spaces
200 tons for airconditioning and habitability
80 tons margin