W latach 20-tych XX w. Finlandia rozważała rozbudowę swych sił morskich. Pojawiało się wiele propozycji różnych okrętów obrony wybrzeża, monitorów, kanonierek itp. Jedną z propozycji miał być „krążownik pancerny” przedstawiony przez włoską stocznię Stabilimento Tecnico Triestino. Niewiele o tym projekcie wiadomo ponadto, że miał mieć 2500 ton wyporności, 2 pojedyncze działa 210 mm oraz 3 działa 120 mm. Dość dziwna (jak na czas i wielkość jednostki) klasyfikacja zdaje się sugerować, że mogło chodzić o okręt w którym położono większy nacisk na prędkość niż opancerzenie. Poniżej moja wizja takiej jednostki:
Karjala, finnish coastal armoured cruiser laid down 1924 (Engine 1925)
Displacement:
2 296 t light; 2 389 t standard; 2 505 t normal; 2 598 t full load
Dimensions: Length overall / water x beam x draught
266,43 ft / 262,96 ft x 45,87 ft x 13,85 ft (normal load)
81,21 m / 80,15 m x 13,98 m x 4,22 m
Armament:
2 - 8,27" / 210 mm guns in single mounts, 282,57lbs / 128,17kg shells, 1905 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
2 - 4,72" / 120 mm guns in single mounts, 52,72lbs / 23,91kg shells, 1918 Model
Quick firing guns in deck mounts
on side, all amidships
1 - 4,72" / 120 mm guns in single mounts, 52,72lbs / 23,91kg shells, 1918 Model
Quick firing gun in deck mount
on centreline aft, 1 raised gun
4 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,88kg shells, 1917 Model
Anti-aircraft guns in deck mounts
on side, all amidships, 2 raised mounts - superfiring
Weight of broadside 731 lbs / 332 kg
Shells per gun, main battery: 100
2 - 18,0" / 457 mm submerged torpedo tubes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3,94" / 100 mm 163,55 ft / 49,85 m 7,68 ft / 2,34 m
Ends: 1,97" / 50 mm 98,59 ft / 30,05 m 7,68 ft / 2,34 m
0,82 ft / 0,25 m Unarmoured ends
Main Belt covers 96% of normal length
Main belt does not fully cover magazines and engineering spaces
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3,94" / 100 mm 2,95" / 75 mm 3,94" / 100 mm
2nd: 1,57" / 40 mm 0,98" / 25 mm -
3rd: 1,57" / 40 mm 0,98" / 25 mm -
- Armour deck: 1,77" / 45 mm, Conning tower: 3,94" / 100 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 17 850 shp / 13 316 Kw = 24,00 kts
Range 3 000nm at 12,00 kts
Bunker at max displacement = 209 tons
Complement:
176 - 230
Cost:
£0,734 million / $2,934 million
Distribution of weights at normal displacement:
Armament: 91 tons, 3,6%
Armour: 673 tons, 26,9%
- Belts: 275 tons, 11,0%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 113 tons, 4,5%
- Armour Deck: 270 tons, 10,8%
- Conning Tower: 16 tons, 0,6%
Machinery: 573 tons, 22,9%
Hull, fittings & equipment: 958 tons, 38,3%
Fuel, ammunition & stores: 209 tons, 8,3%
Miscellaneous weights: 0 tons, 0,0%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2 634 lbs / 1 195 Kg = 9,3 x 8,3 " / 210 mm shells or 0,8 torpedoes
Stability (Unstable if below 1.00): 1,23
Metacentric height 2,3 ft / 0,7 m
Roll period: 12,8 seconds
Steadiness - As gun platform (Average = 50 %): 34 %
- Recoil effect (Restricted arc if above 1.00): 0,31
Seaboat quality (Average = 1.00): 0,46
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0,525
Length to Beam Ratio: 5,73 : 1
'Natural speed' for length: 16,22 kts
Power going to wave formation at top speed: 69 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 7,00 degrees
Stern overhang: 1,08 ft / 0,33 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 19,46 ft / 5,93 m
- Forecastle (21%): 17,95 ft / 5,47 m
- Mid (40%): 17,45 ft / 5,32 m (10,43 ft / 3,18 m aft of break)
- Quarterdeck (22%): 10,96 ft / 3,34 m
- Stern: 11,98 ft / 3,65 m
- Average freeboard: 13,85 ft / 4,22 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 108,2%
- Above water (accommodation/working, high = better): 116,2%
Waterplane Area: 8 223 Square feet or 764 Square metres
Displacement factor (Displacement / loading): 98%
Structure weight / hull surface area: 77 lbs/sq ft or 374 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,89
- Longitudinal: 2,97
- Overall: 1,01
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is adequate
Caution: Lacks seaworthiness - very limited seakeeping ability
Karjala (1925)
Lappi (1925)
Ahvenanmaa (1926)