WesWorld

A new "modern" cruiser

HMS Svärdet , Sweden CGH laid down 1950

Displacement:
6 682 t light; 6 882 t standard; 8 009 t normal; 8 911 t full load

Dimensions: Length overall / water x beam x draught
591,46 ft / 574,15 ft x 65,62 ft x 19,69 ft (normal load)
180,28 m / 175,00 m x 20,00 m x 6,00 m

Armament:
3 - 5,98" / 152 mm guns (1x3 guns), 107,15lbs / 48,60kg shells, 1950 Model
Automatic rapid fire guns in a turret (on a barbette)
on centreline forward
4 - 2,24" / 57,0 mm guns in single mounts, 5,65lbs / 2,56kg shells, 1950 Model
Automatic rapid fire guns in deck mounts with hoists
on side, all amidships
4 - 1,18" / 30,0 mm guns in single mounts, 0,82lbs / 0,37kg shells, 1950 Model
Automatic rapid fire guns in deck mounts with hoists
on side, evenly spread, all raised mounts
Weight of broadside 347 lbs / 158 kg
Shells per gun, main battery: 200
6 - 15,7" / 400 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 1,97" / 50 mm 328,08 ft / 100,00 m 9,71 ft / 2,96 m
Ends: Unarmoured
Main Belt covers 88 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1,18" / 30 mm 0,79" / 20 mm 1,18" / 30 mm
2nd: 0,39" / 10 mm 0,20" / 5 mm 0,20" / 5 mm

- Armour deck: 0,79" / 20 mm, Conning tower: 1,97" / 50 mm

Machinery:
Diesel Internal combustion motors,
Geared drive, 3 shafts, 12 376 shp / 9 233 Kw = 20,00 kts
Range 8 000nm at 18,00 kts
Bunker at max displacement = 2 030 tons

Complement:
423 - 550

Cost:
£2,495 million / $9,978 million

Distribution of weights at normal displacement:
Armament: 52 tons, 0,7 %
Armour: 646 tons, 8,1 %
- Belts: 268 tons, 3,3 %
- Torpedo bulkhead: 0 tons, 0,0 %
- Armament: 27 tons, 0,3 %
- Armour Deck: 334 tons, 4,2 %
- Conning Tower: 17 tons, 0,2 %
Machinery: 296 tons, 3,7 %
Hull, fittings & equipment: 3 167 tons, 39,5 %
Fuel, ammunition & stores: 1 328 tons, 16,6 %
Miscellaneous weights: 2 520 tons, 31,5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
21 290 lbs / 9 657 Kg = 198,7 x 6,0 " / 152 mm shells or 3,5 torpedoes
Stability (Unstable if below 1.00): 1,01
Metacentric height 2,7 ft / 0,8 m
Roll period: 16,8 seconds
Steadiness - As gun platform (Average = 50 %): 89 %
- Recoil effect (Restricted arc if above 1.00): 0,11
Seaboat quality (Average = 1.00): 1,78

Hull form characteristics:
Hull has raised forecastle, rise forward of midbreak, low quarterdeck
Block coefficient: 0,378
Length to Beam Ratio: 8,75 : 1
'Natural speed' for length: 23,96 kts
Power going to wave formation at top speed: 29 %
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: 29,53 ft / 9,00 m
- Forecastle (20 %): 26,25 ft / 8,00 m (22,97 ft / 7,00 m aft of break)
- Mid (50 %): 22,97 ft / 7,00 m (19,69 ft / 6,00 m aft of break)
- Quarterdeck (30 %): 8,86 ft / 2,70 m (19,69 ft / 6,00 m before break)
- Stern: 8,86 ft / 2,70 m
- Average freeboard: 19,00 ft / 5,79 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 52,4 %
- Above water (accommodation/working, high = better): 210,0 %
Waterplane Area: 22 954 Square feet or 2 132 Square metres
Displacement factor (Displacement / loading): 192 %
Structure weight / hull surface area: 91 lbs/sq ft or 443 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,96
- Longitudinal: 1,51
- 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

3x R & R Olympus Gasturbines 25000shp
CoDaG = 12400shp + 70000shp = 82400shp (72000shp demanded)
top speed 32 kts

2x MK41 VLS (424m3, 54m2 each, 2x250ton)
122 missiles
8x rbs 15 canisters
1x2 RBS 08 SLCM launcher (12missiles)

sensors
1x AN SPS 48/E - PS 860 (airsearch)
1x SeaGiraffe 50HC (air/surf search)
1x BAE Type 996 (air/surf search)
2x Raccal Decca (Nav)
Ericsson 9lv Mk2 FC (gun)
SPG-62 FC radar (missile)

Too small for a CGH I think when compared to HMS Tiger or the Italian ships.

I'm not entirely sure what the 152mm guns are meant to achieve. I'd assume that the Swedes are mainly defensive during the cold war and not planning amphibious landings anywhere. I'd mount extra AA instead, maybe 76/62.

I'm not sure on the room for all those missiles as well compared to a Type 22 or 23.

She has about the same size as a Ticonderoga class cruiser. The missles are fit in a MK41 vls

The 15,2cm gun is usefull to have both as a ASuW weapon and for NGS. These ships are meant to primary protect the carriers and secondary as support ships for the amphibiusforces

Way too modern for a ship laid down 1950 - or is your timeline 30 years ahead of OTL?

Stephan, SS doesn't allow ships laid down later than 1950. Shes actually laid down in the mid-80s if you look on the website.

I'm not sure Sweden needs such air defense capability. I'd go for a single VLS with SM-2 missiles. Then an sextuple Seawolf launcher for short range AA.

A single 152mm gun would be sufficient methinks. Space issues crop up otherwise.

She serves many purposis:

1. ARG and Carrier excort
2. Missiletrap in the baltic
3. She should also be able to be sent as SAG centerpiece on "diplomacy" missions

She was laid down 1984

Why triple 15cm gun: It looks cool and it is nice to be able to pu 60 shells/ min in the target. I've tried to incoporate as many Falklands lessons as possible..

Why 2 VLS: It makes her more flexible and in less need of large supply ships with missiles, it is also a preparation to fit VLS SLCM later so the RB08 SLCM can be removed.

What about using rolling airframe missles for short range defence?

RAM? Don't belive in the system.

A combination of SM2-ESSM -57mm-30mm is a very effective and flexible system, besides can the guns be used against lots of other types of targets, and is cheaper.

Well, in OTL several European navies seem to have no problems with RAM-systems. See several German warships of the last decade for example...

The Swedish Navy seems not to use such a system in present day. Though that might stem from most of their fleet being relatively small ships and patrol craft.

Well, the Germans are using these systems on small hulls. See here . The boats have a size of about 390ts and also feature a 76mm OTO Melara, MM38 Exocet and heavy MGs (plus nuclear mines, if need be).

Both 40mm and 57mm are better AA guns than the 76mm melera system. The RAM is comparable to a 57mm gun in range and hit probability, but has a little larger warhead, the RAM wasnt operative until the mid 1990s