WesWorld

A design that's been worked up in consultation with a potential customer. Obviously too large for a Type B cruiser under the CT, she would be of more interest to a non-CT member state.


Export, German Light Cruiser laid down 1932

Displacement:
10,204 t light; 10,624 t standard; 11,694 t normal; 12,551 t full load

Dimensions: Length overall / water x beam x draught
638.58 ft / 623.36 ft x 65.62 ft x 20.01 ft (normal load)
194.64 m / 190.00 m x 20.00 m x 6.10 m

Armament:
15 - 5.91" / 150 mm guns (5x3 guns), 100.31lbs / 45.50kg shells, 1925 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 2 raised mounts - superfiring
8 - 3.94" / 100 mm guns (4x2 guns), 30.51lbs / 13.84kg shells, 1932 Model
Dual purpose guns in deck mounts with hoists
on side ends, evenly spread
16 - 1.46" / 37.0 mm guns (8x2 guns), 1.55lbs / 0.70kg shells, 1932 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 4 raised mounts
16 - 0.79" / 20.0 mm guns (8x2 guns), 0.24lbs / 0.11kg shells, 1932 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 1,777 lbs / 806 kg
Shells per gun, main battery: 180
8 - 23.6" / 600 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.72" / 120 mm 405.18 ft / 123.50 m 9.71 ft / 2.96 m
Ends: Unarmoured
Main Belt covers 100 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 4.72" / 120 mm 2.76" / 70 mm 4.72" / 120 mm
2nd: 1.97" / 50 mm 0.79" / 20 mm 1.97" / 50 mm
3rd: 0.79" / 20 mm 0.39" / 10 mm -
4th: 0.39" / 10 mm - -

- Armour deck: 2.24" / 57 mm, Conning tower: 4.72" / 120 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 84,680 shp / 63,171 Kw = 32.50 kts
Range 8,000nm at 15.00 kts
Bunker at max displacement = 1,927 tons

Complement:
561 - 730

Cost:
£4.081 million / $16.325 million

Distribution of weights at normal displacement:
Armament: 227 tons, 1.9 %
Armour: 2,598 tons, 22.2 %
- Belts: 777 tons, 6.6 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 592 tons, 5.1 %
- Armour Deck: 1,177 tons, 10.1 %
- Conning Tower: 52 tons, 0.4 %
Machinery: 2,499 tons, 21.4 %
Hull, fittings & equipment: 4,809 tons, 41.1 %
Fuel, ammunition & stores: 1,491 tons, 12.7 %
Miscellaneous weights: 70 tons, 0.6 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
17,648 lbs / 8,005 Kg = 171.4 x 5.9 " / 150 mm shells or 2.1 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 3.2 ft / 1.0 m
Roll period: 15.5 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.43
Seaboat quality (Average = 1.00): 1.22

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.500
Length to Beam Ratio: 9.50 : 1
'Natural speed' for length: 28.61 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 57
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 32.81 ft / 10.00 m
- Forecastle (20 %): 25.43 ft / 7.75 m
- Mid (40 %): 25.43 ft / 7.75 m (19.69 ft / 6.00 m aft of break)
- Quarterdeck (15 %): 19.69 ft / 6.00 m
- Stern: 19.69 ft / 6.00 m
- Average freeboard: 22.57 ft / 6.88 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 85.9 %
- Above water (accommodation/working, high = better): 171.2 %
Waterplane Area: 28,340 Square feet or 2,633 Square metres
Displacement factor (Displacement / loading): 123 %
Structure weight / hull surface area: 109 lbs/sq ft or 531 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.47
- 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

50 tons reserved for aircraft facilities

20 tons reserved for future growth

Hmmm... looks a lot like the Rashomon and Yojimbo built for Chosen and Formosa...

Quite similar, agreed, as it turns out. I had not thought of those ships when I was designing it (I was looking more at the new Canadian CLs), but yes, rather close parallels.

Well, the Canadian CLS use 140mm on 8,000 tons so there's some difference between that one and the german Export.
Perhaps you were also looking a bit at the Mogami's when designing the ship (I know I did).

I didn't really look at the Mogami's when I was coming up with it, other than for layout of the primary battery. The Canadian CLs are smaller, sure, but the fact that they managed to fit 15(!) main guns on that hull made a fair impression on the German designers. This ship is bigger, because of the 150mms instead of the 140mms, but that was where the idea came from.

Sounds familiar. I had the same thing when I changed the Waissu class cruiser into something half its size. Without really paying attention, it turned into something that, when looking at it now, is a lot like the Italian Capitani Romani class.

My babies have fans. ^_^

I've always been a fan of the Brooklyn class cruisers and to some extent the Mogami's as well. Can't argue with 15x6" guns...unless you have this design, the Italian Pisa, Rashomon (repeat of a japanese design?) or the Canuck cruisers.

Capitan Tylor can argue with a 15 x 6" with its 16 x 8", however its got wing turrets in twins and is slower so it would be an interesting arguement.

Well I was refering to the 6" weight class but yeah 16x8" is also hard to argue with.

Tylor would be an interesting match for the 14x7,48" Ulic Ali Reis, allthough I must admit I haven't really done a compairison between the two. Ulic Ali Reis has 2 less guns per broadside and overall, i'm not even sure which ship has the better armor but I suspect Tylor being the newer ship would have an advantage there as well.

Then again having a 7,000 ton advantage will get you that...

Hmmm simple way to deal with this ship. Get a Battlecruiser.

Slightly tougher way, call in a 210mm gun cruiser

A 210mm CA would still have a tough fight on her hands with the hail of 6" shells this ship could dish out. If she could avoid critical hits long enough and score a few of her own the odd's would even up fairly quickly.

The trick for a 8"-8.2" cruiser versus this ship is to stay at long range, in the daylight. Use your (hopefully) heavier armor versus his lighter, less capable of penetrating, shells and slowly chew him up. At night, though, this thing (or other similar type units) could be a beast.

This ship comes from a school of thought that I have hard time to figure.
Rain of pain versus knock out blows.



Concentrating fire power in a single unit versus two smaller ship carrying 8 guns each
I think of a warships of this size as a way to bring guns to the enemy.

This ship is usefull fighting of smaller ship (DD and CL)
also in short renge night battles this ship has its advanteges.
Over its 8'' conterpart.

The war sessons say 10000t cruiser were equal.

So basicly I dont know what to think.

It depends on what other cruisers this one is against. There are lots of turrets, so a large chance of a penetrating turret hit exploding a magazine.

Lots of guns, probably topweight problems like the other USN cruisers.

For a larger cruiser, one of the 13000ton types its likely to stay at 150-200hm where the 203mm weapon will hit more often and heavier and the larger cruiser is at no risk of being sunk by gunfire.

Tylor's known disadvantage is her relatively slow speed (28 knots I believe) and that her main battery is split into eight turrets, both superimposed fore and aft plus two wing turrets per side. Thus she can only bring 12 guns to bear on a broadside. However with the large number of turrets she can (theoretically) engage two treaty cruisers at once. So while she cannot engage a target like the 15 guns light cruisers with all her 16 guns, 12 guns should be enough for that task plus if wing turrets get knocked out, the ship could possibly unmask the opposing sides turrets.

Quoted

Lots of guns, probably topweight problems like the other USN cruisers.

Probably less topweight problems than, say, Pisa, which has more guns on a smaller hull.

That might look deceptive. Sure the german export cruiser is about 20% heavier (Pisa's 9,511 tons vs Export's 11,694 tons) but it has a much higher freeboard than the Pisa (about 6 feet heigher on average). I don't expect that the hull section needed for the extra height of the freeboard on the german design is made of plywood and the Export is much longer than the Pisa so quite some extra steel is needed for the extra height in steel (as well as longer barbettes). The extra height in freeboard means that the Export design has its guns higher above the waterline than the Pisa. Also Pisa's armament Armor isn't that much. The armor thicknesses on the various spots is roughly half the thickness used on the Export and Pisa's other armament don't have any armor at all while the Export does.

Pisa vs Export:
Armament weight: 223 tons - 227 tons
Armament Armor weight: 194 tons - 592 tons
Total armament weights: 417 tons - 819 tons

Could someone compare the weights of a single Italian quad turret to a single German triple? (that's armament + armor)

Quoted

Probably less topweight problems than, say, Pisa, which has more guns on a smaller hull.

The hull break takes care of a lot of that. Then there is very little secondary armament, little AAA and less superstructure.

The german version has a break as well, but the one on Pisa is twice as tall.
Superstructure? What superstructure? :-)