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Moving forward with the cruiser line. The Mars class (former Kronprinsen) armoured cruiser. Named after a 16th century royal battle ship which distiqusted it self in battle against the Danes in the 1560s and of course the roman god of war.
Mars, Solen, Jupiter, Armoured cruiser Sweden laid down 1898
Displacement:
8 046 t light; 8 449 t standard; 9 005 t normal; 9 450 t full load
Dimensions: Length overall / water x beam x draught
410,11 ft / 410,11 ft x 65,62 ft x 19,69 ft (normal load)
125,00 m / 125,00 m x 20,00 m x 6,00 m
Armament:
2 - 8,27" / 210 mm guns in single mounts, 282,57lbs / 128,17kg shells, 1898 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
4 - 8,27" / 210 mm guns in single mounts, 282,57lbs / 128,17kg shells, 1898 Model
Breech loading guns in turrets (on barbettes)
on side, all amidships
6 - 5,98" / 152 mm guns in single mounts, 107,15lbs / 48,60kg shells, 1898 Model
Breech loading guns in casemate mounts
on centreline, all amidships
6 - 2,24" / 57,0 mm guns in single mounts, 5,57lbs / 2,53kg shells, 1889 Model
Quick firing guns in deck mounts
on side, evenly spread
6 guns in hull casemates - Limited use in all but light seas
6 - 2,24" / 57,0 mm guns in single mounts, 5,57lbs / 2,53kg shells, 1889 Model
Breech loading guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 2 405 lbs / 1 091 kg
Shells per gun, main battery: 150
2 - 18,0" / 457 mm submerged torpedo tubes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 5,98" / 152 mm 370,73 ft / 113,00 m 9,71 ft / 2,96 m
Ends: 2,36" / 60 mm 26,25 ft / 8,00 m 9,71 ft / 2,96 m
13,12 ft / 4,00 m Unarmoured ends
Upper: 2,36" / 60 mm 266,57 ft / 81,25 m 8,01 ft / 2,44 m
Main Belt covers 139 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 5,98" / 152 mm 3,35" / 85 mm 3,94" / 100 mm
2nd: 5,98" / 152 mm 3,35" / 85 mm 3,94" / 100 mm
3rd: 3,94" / 100 mm - -
4th: 2,36" / 60 mm - -
- Armour deck: 1,00" / 25 mm, Conning tower: 5,98" / 152 mm
Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 3 shafts, 18 791 ihp / 14 018 Kw = 21,00 kts
Range 4 000nm at 10,00 kts (Bunkerage = 1 001 tons)
Complement:
461 - 600
Cost:
£0,958 million / $3,834 million
Distribution of weights at normal displacement:
Armament: 301 tons, 3,3 %
Armour: 1 957 tons, 21,7 %
- Belts: 1 116 tons, 12,4 %
- Torpedo bulkhead: 0 tons, 0,0 %
- Armament: 423 tons, 4,7 %
- Armour Deck: 362 tons, 4,0 %
- Conning Tower: 56 tons, 0,6 %
Machinery: 3 031 tons, 33,7 %
Hull, fittings & equipment: 2 758 tons, 30,6 %
Fuel, ammunition & stores: 959 tons, 10,7 %
Miscellaneous weights: 0 tons, 0,0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
5 099 lbs / 2 313 Kg = 18,0 x 8,3 " / 210 mm shells or 1,0 torpedoes
Stability (Unstable if below 1.00): 1,44
Metacentric height 5,0 ft / 1,5 m
Roll period: 12,4 seconds
Steadiness - As gun platform (Average = 50 %): 67 %
- Recoil effect (Restricted arc if above 1.00): 0,23
Seaboat quality (Average = 1.00): 1,34
Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0,595
Length to Beam Ratio: 6,25 : 1
'Natural speed' for length: 20,25 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): -10,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22,97 ft / 7,00 m
- Forecastle (20 %): 22,97 ft / 7,00 m (13,12 ft / 4,00 m aft of break)
- Mid (50 %): 13,12 ft / 4,00 m
- Quarterdeck (15 %): 13,12 ft / 4,00 m
- Stern: 13,12 ft / 4,00 m
- Average freeboard: 15,09 ft / 4,60 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 138,6 %
- Above water (accommodation/working, high = better): 106,2 %
Waterplane Area: 19 590 Square feet or 1 820 Square metres
Displacement factor (Displacement / loading): 86 %
Structure weight / hull surface area: 100 lbs/sq ft or 489 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,95
- Longitudinal: 1,57
- Overall: 1,00
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Good seaboat, rides out heavy weather easily