Nordiska Örlogsfartyg

[Korpen]

Boy, I hope these ships don't leave the harbor.
They won't float very well on the ocean floor.

Korpen, while I agree that a river monitor might be able to get away with lousy seakeeping, I have to say that this ship takes that kind of thing to an unhealthy extreme. Your ship will be completely swamped in any kind of seas, and will not be able to survive the kind of weather which all too often plague the area.

Well, historically that did survive surprisingly well, none of the four ships did sink, and one survived a trip to Stavanger in quite bad weather.

But looking at the drawing (really nice that the Swedish maritime museum has stuff like that on the net) I think that it is a casemate and not a turret, so a redesign might be in order.

http://upload.wikimedia.org/wikipedia/commons/a/a5/Gerda1895.jpg
Picure of her in 1895

[Carthaginian]

It's looking like a fixed mount forward- that it is... more like a fully-armored flat-iron gunboat.
Several of the U.S.N. monitors might have successfully sailed somewhere other than in coastal and riverine environments- but remember that several were lost due to swamping, including the original.

I think that my above suggestion might have something to do with it- the ship might not be a 'cheesebox on a raft,' it might have a somewhat more seaworthy hull design.

But you still wouldn't see me sail her out past Dauphin Island on a calm day. ;)

[Korpen]

Now with battleship level of armour!

HMS Gerda, Nordisk 3:e klassens pansarbåt laid down 1870

Displacement:
   413 t light; 435 t standard; 450 t normal; 462 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (124,67 ft / 124,67 ft) x 26,25 ft x (8,20 / 8,38 ft)
   (38,00 m / 38,00 m) x 8,00 m  x (2,50 / 2,56 m)

Armament:
      1 - 9,84" / 250 mm 22,0 cal gun - 330,69lbs / 150,00kg shells, 70 per gun
     Breech loading gun in casemate mount, 1870 Model
     1 x Single mount on centreline, forward deck aft
      Weight of broadside 331 lbs / 150 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7,87" / 200 mm   124,67 ft / 38,00 m   1,64 ft / 0,50 m
     Main Belt covers 154 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   12,0" / 305 mm   7,87" / 200 mm            -

   - Protected deck - single deck:
   For and Aft decks: 1,97" / 50 mm
   Forecastle: 1,97" / 50 mm  Quarter deck: 1,77" / 45 mm

Machinery:
   Coal fired boilers, simple reciprocating steam engines,
   Direct drive, 2 shafts, 132 ihp / 98 Kw = 8,00 kts
   Range 598nm at 7,00 kts
   Bunker at max displacement = 28 tons (100% coal)

Complement:
   48 - 63

Cost:
   £0,027 million / $0,109 million

Distribution of weights at normal displacement:
   Armament: 25 tons, 5,6 %
      - Guns: 25 tons, 5,6 %
   Armour: 207 tons, 46,0 %
      - Belts: 60 tons, 13,2 %
      - Armament: 62 tons, 13,8 %
      - Armour Deck: 85 tons, 18,9 %
   Machinery: 32 tons, 7,2 %
   Hull, fittings & equipment: 149 tons, 33,0 %
   Fuel, ammunition & stores: 37 tons, 8,3 %
   Miscellaneous weights: 0 tons, 0,0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     633 lbs / 287 Kg = 1,9 x 9,8 " / 250 mm shells or 1,0 torpedoes
   Stability (Unstable if below 1.00): 2,07
   Metacentric height 2,1 ft / 0,6 m
   Roll period: 7,6 seconds
   Steadiness   - As gun platform (Average = 50 %): 25 %
         - Recoil effect (Restricted arc if above 1.00): 0,04
   Seaboat quality  (Average = 1.00): 0,23

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,587 / 0,590
   Length to Beam Ratio: 4,75 : 1
   'Natural speed' for length: 11,17 kts
   Power going to wave formation at top speed: 35 %
   Trim (Max stability = 0, Max steadiness = 100): 55
   Bow angle (Positive = bow angles forward): 0,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   25,00 %,  1,31 ft / 0,40 m,  1,31 ft / 0,40 m
      - Forward deck:   30,00 %,  1,31 ft / 0,40 m,  1,31 ft / 0,40 m
      - Aft deck:   20,00 %,  1,31 ft / 0,40 m,  1,31 ft / 0,40 m
      - Quarter deck:   25,00 %,  1,31 ft / 0,40 m,  1,31 ft / 0,40 m
      - Average freeboard:      1,31 ft / 0,40 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 42,9 %
      - Above water (accommodation/working, high = better): 12,3 %
   Waterplane Area: 2 364 Square feet or 220 Square metres
   Displacement factor (Displacement / loading): 129 %
   Structure weight / hull surface area: 58 lbs/sq ft or 282 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1,09
      - Longitudinal: 1,20
      - Overall: 1,10
   Excellent machinery, storage, compartmentation space
   Extremely poor accommodation and workspace room
   Ship has quick, lively roll, not a steady gun platform
   Caution: Lacks seaworthiness - very limited seakeeping ability

The design notes of the real ship mention that high Metacentric height being sought to ensure survival in bad weather.
That said, even storm conditions in the Baltic do not create waves much higher then you will find on an average day in the bay of Biscay.
Also, there is very little need for them to be outside the costal archipelagos in that sort of weather.

Edit: Forgot that she should have two shafts for increased manoeuvrability.

[Korpen]

I give you Tordenskjold!

Tordenskjold, Nordisk Pansarbåt laid down 1879
Central citadel ship

Displacement:
   2 322 t light; 2 407 t standard; 2 534 t normal; 2 636 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (222,44 ft / 222,44 ft) x 43,31 ft x (15,75 / 16,26 ft)
   (67,80 m / 67,80 m) x 13,20 m  x (4,80 / 4,96 m)

Armament:
      1 - 13,98" / 355 mm 25,0 cal gun - 1 102,31lbs / 500,00kg shells, 40 per gun
     Breech loading gun in Coles/Ericsson turret mount, 1879 Model
     1 x Single mount on centreline, forward deck centre
      4 - 4,72" / 120 mm 30,0 cal guns - 44,09lbs / 20,00kg shells, 90 per gun
     Breech loading guns in deck mounts, 1879 Model
     4 x Single mounts on sides, aft deck aft
      1 - 2,99" / 76,0 mm 25,0 cal gun - 11,12lbs / 5,04kg shells, 50 per gun
     Muzzle loading gun in casemate mount, 1879 Model
     1 x Single mount on centreline, aft deck aft
      1 hull mount in casemate- Limited use in any sea
      Weight of broadside 1 290 lbs / 585 kg
      Main Torpedoes
      3 - 15,0" / 380 mm, 13,12 ft / 4,00 m torpedoes - 0,142 t each, 0,425 t total
   submerged bow tubes
      2nd Torpedoes
      9 - 13,8" / 350 mm, 9,84 ft / 3,00 m torpedoes - 0,074 t each, 0,668 t total
   submerged stern tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Ends:   Unarmoured
   Upper:   7,87" / 200 mm     32,81 ft / 10,00 m   9,19 ft / 2,80 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   6,69" / 170 mm   6,69" / 170 mm            -
   2nd:   1,97" / 50 mm   0,20" / 5 mm            -

   - Protected deck - single deck:
   For and Aft decks: 1,57" / 40 mm
   Forecastle: 3,74" / 95 mm  Quarter deck: 0,00" / 0 mm

Machinery:
   Coal fired boilers, simple reciprocating steam engines,
   Direct drive, 2 shafts, 2 300 ihp / 1 716 Kw = 13,80 kts
   Range 1 500nm at 9,00 kts
   Bunker at max displacement = 229 tons (100% coal)

Complement:
   178 - 232

Cost:
   £0,213 million / $0,854 million

Distribution of weights at normal displacement:
   Armament: 152 tons, 6,0 %
      - Guns: 150 tons, 5,9 %
      - Weapons: 2 tons, 0,1 %
   Armour: 557 tons, 22,0 %
      - Belts: 199 tons, 7,8 %
      - Armament: 150 tons, 5,9 %
      - Armour Deck: 209 tons, 8,2 %
   Machinery: 482 tons, 19,0 %
   Hull, fittings & equipment: 1 121 tons, 44,2 %
   Fuel, ammunition & stores: 212 tons, 8,4 %
   Miscellaneous weights: 10 tons, 0,4 %
      - Hull below water: 5 tons
      - Hull above water: 5 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     2 362 lbs / 1 071 Kg = 2,1 x 14,0 " / 355 mm shells or 8,0 torpedoes
   Stability (Unstable if below 1.00): 1,33
   Metacentric height 2,4 ft / 0,7 m
   Roll period: 11,9 seconds
   Steadiness   - As gun platform (Average = 50 %): 73 %
         - Recoil effect (Restricted arc if above 1.00): 0,57
   Seaboat quality  (Average = 1.00): 1,46

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,585 / 0,589
   Length to Beam Ratio: 5,14 : 1
   'Natural speed' for length: 14,91 kts
   Power going to wave formation at top speed: 49 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 0,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20,00 %,  9,19 ft / 2,80 m,  9,19 ft / 2,80 m
      - Forward deck:   30,00 %,  9,19 ft / 2,80 m,  9,19 ft / 2,80 m
      - Aft deck:   35,00 %,  9,19 ft / 2,80 m,  9,19 ft / 2,80 m
      - Quarter deck:   15,00 %,  9,19 ft / 2,80 m,  9,19 ft / 2,80 m
      - Average freeboard:      9,19 ft / 2,80 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 88,7 %
      - Above water (accommodation/working, high = better): 68,3 %
   Waterplane Area: 6 945 Square feet or 645 Square metres
   Displacement factor (Displacement / loading): 118 %
   Structure weight / hull surface area: 118 lbs/sq ft or 577 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,96
      - Longitudinal: 3,55
      - Overall: 1,10
   Adequate machinery, storage, compartmentation space
   Cramped accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

[Korpen]

Well, I guess I need a flagship, and something like this might be more economical way to carry four heavy guns then building four Tordensköld. Some of the misc weight is allocated to the ram.
Otherwise she is a fairly typical central citadel ship.

Endräkten, Nordiskt Pansarskepp laid down 1878

Displacement:
   7 555 t light; 7 895 t standard; 8 350 t normal; 8 714 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (254,27 ft / 249,34 ft) x 62,34 ft x (21,65 / 22,53 ft)
   (77,50 m / 76,00 m) x 19,00 m  x (6,60 / 6,87 m)

Armament:
      4 - 14,17" / 360 mm 22,0 cal guns - 1 157,43lbs / 525,00kg shells, 60 per gun
     Breech loading guns in Coles/Ericsson turret mounts, 1878 Model
     2 x Single mounts on sides, aft deck centre
      6 - 4,72" / 120 mm 30,0 cal guns - 44,09lbs / 20,00kg shells, 120 per gun
     Breech loading guns in casemate mounts, 1878 Model
     6 x Single mounts on centreline, evenly spread
      8 - 1,46" / 37,0 mm 30,0 cal guns - 1,29lbs / 0,59kg shells, 150 per gun
     Breech loading guns in deck mounts, 1878 Model
     2 x Quad mounts on sides, forward deck aft
      Weight of broadside 4 905 lbs / 2 225 kg
      Main Torpedoes
      4 - 15,0" / 380 mm, 13,12 ft / 4,00 m torpedoes - 0,134 t each, 0,537 t total
   submerged side tubes
      2nd Torpedoes
      2 - 15,0" / 380 mm, 13,12 ft / 4,00 m torpedoes - 0,134 t each, 0,269 t total
   submerged stern tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   15,7" / 400 mm   118,11 ft / 36,00 m   6,56 ft / 2,00 m
   Ends:   Unarmoured
   Upper:   15,0" / 380 mm   118,11 ft / 36,00 m   8,20 ft / 2,50 m
     Main Belt covers 73 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   14,2" / 360 mm   11,8" / 300 mm            -
   4th:   0,20" / 5 mm         -               -

   - Protected deck - single deck:
   For and Aft decks: 2,05" / 52 mm
   Forecastle: 3,15" / 80 mm  Quarter deck: 3,15" / 80 mm

   - Conning towers: Forward 12,20" / 310 mm, Aft 0,00" / 0 mm

Machinery:
   Coal fired boilers, simple reciprocating steam engines,
   Direct drive, 2 shafts, 5 656 ihp / 4 220 Kw = 14,03 kts
   Range 1 852nm at 10,00 kts
   Bunker at max displacement = 819 tons (100% coal)

Complement:
   436 - 567

Cost:
   £0,653 million / $2,614 million

Distribution of weights at normal displacement:
   Armament: 500 tons, 6,0 %
      - Guns: 499 tons, 6,0 %
      - Weapons: 2 tons, 0,0 %
   Armour: 2 800 tons, 33,5 %
      - Belts: 1 479 tons, 17,7 %
      - Armament: 563 tons, 6,7 %
      - Armour Deck: 649 tons, 7,8 %
      - Conning Tower: 108 tons, 1,3 %
   Machinery: 1 202 tons, 14,4 %
   Hull, fittings & equipment: 3 033 tons, 36,3 %
   Fuel, ammunition & stores: 795 tons, 9,5 %
   Miscellaneous weights: 20 tons, 0,2 %
      - Hull below water: 10 tons
      - Hull above water: 10 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     8 364 lbs / 3 794 Kg = 7,2 x 14,2 " / 360 mm shells or 17,5 torpedoes
   Stability (Unstable if below 1.00): 1,27
   Metacentric height 3,8 ft / 1,2 m
   Roll period: 13,4 seconds
   Steadiness   - As gun platform (Average = 50 %): 84 %
         - Recoil effect (Restricted arc if above 1.00): 0,73
   Seaboat quality  (Average = 1.00): 1,59

Hull form characteristics:
   Hull has raised forecastle, raised quarterdeck ,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,868 / 0,871
   Length to Beam Ratio: 4,00 : 1
   'Natural speed' for length: 15,79 kts
   Power going to wave formation at top speed: 57 %
   Trim (Max stability = 0, Max steadiness = 100): 53
   Bow angle (Positive = bow angles forward): -10,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   26,00 %,  19,69 ft / 6,00 m,  19,69 ft / 6,00 m
      - Forward deck:   3,00 %,  11,48 ft / 3,50 m,  11,48 ft / 3,50 m
      - Aft deck:   46,00 %,  11,48 ft / 3,50 m,  11,48 ft / 3,50 m
      - Quarter deck:   25,00 %,  19,69 ft / 6,00 m,  19,69 ft / 6,00 m
      - Average freeboard:      15,67 ft / 4,78 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 72,5 %
      - Above water (accommodation/working, high = better): 73,1 %
   Waterplane Area: 14 568 Square feet or 1 353 Square metres
   Displacement factor (Displacement / loading): 114 %
   Structure weight / hull surface area: 163 lbs/sq ft or 793 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,92
      - Longitudinal: 5,22
      - Overall: 1,10
   Excellent machinery, storage, compartmentation space
   Cramped accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather