Coast Defense Ships

Walter · August 16, 2017, 02:15:59 PM

Coast Defense Ships of the Northern Kingdom Navy.

Walter · August 16, 2017, 02:16:45 PM

Fenrir, Norse Monitor laid down 1882

Ships: 3. Fenrir, Hati, Sköll.

Displacement:
3,548 t light; 3,751 t standard; 3,968 t normal; 4,141 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(263.00 ft / 263.00 ft) x 55.00 ft x (15.00 / 15.55 ft)
(80.16 m / 80.16 m) x 16.76 m x (4.57 / 4.74 m)

Armament:
4 - 9.84" / 250 mm 40.0 cal guns - 428.62lbs / 194.42kg shells, 100 per gun
Breech loading guns in turret on barbette mounts, 1882 Model
2 x Single mounts on centreline ends, evenly spread
6 - 3.94" / 100.0 mm 40.0 cal guns - 27.43lbs / 12.44kg shells, 200 per gun
Breech loading guns in deck mounts, 1882 Model
6 x Single mounts on sides, evenly spread
6 - 2.95" / 75.0 mm 40.0 cal guns - 11.57lbs / 5.25kg shells, 250 per gun
Breech loading guns in deck mounts, 1882 Model
6 x Single mounts on sides, evenly spread
4 - 1.46" / 37.0 mm 40.0 cal guns - 1.39lbs / 0.63kg shells, 300 per gun
Breech loading guns in deck mounts, 1882 Model
4 x Single mounts on sides, evenly spread
4 - 0.30" / 7.7 mm 87.0 cal guns - 0.02lbs / 0.01kg shells, 500 per gun
Breech loading guns in deck mounts, 1882 Model
4 x Single mounts on centreline, evenly spread
4 raised mounts
Weight of broadside 1,954 lbs / 886 kg

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 8.00" / 203 mm 170.95 ft / 52.11 m 7.00 ft / 2.13 m
Ends: 3.00" / 76 mm 92.03 ft / 28.05 m 7.00 ft / 2.13 m
Upper: 5.00" / 127 mm 170.95 ft / 52.11 m 5.00 ft / 1.52 m
Main Belt covers 100 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 12.0" / 305 mm 6.00" / 152 mm 10.0" / 254 mm

- Armoured deck - single deck:
For and Aft decks: 2.25" / 57 mm
Forecastle: 1.50" / 38 mm Quarter deck: 1.50" / 38 mm

- Conning towers: Forward 10.00" / 254 mm, Aft 0.00" / 0 mm

Machinery:
Coal fired boilers, simple reciprocating steam engines,
Direct drive, 2 shafts, 1,726 ihp / 1,288 Kw = 12.00 kts
Range 1,650nm at 10.00 kts
Bunker at max displacement = 389 tons (100% coal)

Complement:
249 - 324

Cost:
£0.326 million / $1.304 million

Distribution of weights at normal displacement:
Armament: 458 tons, 11.5 %
- Guns: 458 tons, 11.5 %
Armour: 1,464 tons, 36.9 %
- Belts: 712 tons, 17.9 %
- Armament: 267 tons, 6.7 %
- Armour Deck: 432 tons, 10.9 %
- Conning Tower: 54 tons, 1.4 %
Machinery: 347 tons, 8.8 %
Hull, fittings & equipment: 1,196 tons, 30.1 %
Fuel, ammunition & stores: 420 tons, 10.6 %
Miscellaneous weights: 82 tons, 2.1 %
- Hull below water: 36 tons
- Hull above water: 36 tons
- Above deck: 10 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
4,043 lbs / 1,834 Kg = 9.6 x 9.8 " / 250 mm shells or 1.6 torpedoes
Stability (Unstable if below 1.00): 1.23
Metacentric height 3.0 ft / 0.9 m
Roll period: 13.4 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0.20
Seaboat quality (Average = 1.00): 0.78

Hull form characteristics:
Hull has a flush deck,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.640 / 0.644
Length to Beam Ratio: 4.78 : 1
'Natural speed' for length: 16.22 kts
Power going to wave formation at top speed: 39 %
Trim (Max stability = 0, Max steadiness = 100): 76
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 %, 5.00 ft / 1.52 m, 5.00 ft / 1.52 m
- Forward deck: 30.00 %, 5.00 ft / 1.52 m, 5.00 ft / 1.52 m
- Aft deck: 35.00 %, 5.00 ft / 1.52 m, 5.00 ft / 1.52 m
- Quarter deck: 15.00 %, 5.00 ft / 1.52 m, 5.00 ft / 1.52 m
- Average freeboard: 5.00 ft / 1.52 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 66.6 %
- Above water (accommodation/working, high = better): 42.0 %
Waterplane Area: 10,980 Square feet or 1,020 Square metres
Displacement factor (Displacement / loading): 107 %
Structure weight / hull surface area: 111 lbs/sq ft or 544 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.25
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Extremely poor accommodation and workspace room
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

- 36 tons for additional damage control and pumps (hull below water)
- 36 tons for climate control (hull above water)
- 10 tons for short range wireless (above deck, installed 1902-3 @10 tons))

Total additional basic refit costs per ship: 10 tons

Walter · August 16, 2017, 02:17:39 PM

Vidopnir, Norse Monitor laid down 1899

Ships: 2. Vidopnir, Vedrfölnir.

Displacement:
2,996 t light; 3,153 t standard; 3,309 t normal; 3,433 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(256.00 ft / 252.00 ft) x 50.00 ft x (13.00 / 13.43 ft)
(78.03 m / 76.81 m) x 15.24 m x (3.96 / 4.09 m)

Armament:
2 - 12.01" / 305 mm 35.0 cal guns - 811.72lbs / 368.19kg shells, 80 per gun
Breech loading guns in turret on barbette mount, 1899 Model
1 x Twin mount on centreline forward
4 - 3.94" / 100.0 mm 40.0 cal guns - 29.23lbs / 13.26kg shells, 250 per gun
Breech loading guns in deck mounts, 1899 Model
4 x Single mounts on sides, evenly spread
4 raised mounts
3 - 2.24" / 57.0 mm 40.0 cal guns - 5.42lbs / 2.46kg shells, 200 per gun
Quick firing guns in deck mounts, 1899 Model
3 x Single mounts on sides, evenly spread
4 - 1.46" / 37.0 mm 40.0 cal guns - 1.48lbs / 0.67kg shells, 300 per gun
Quick firing guns in deck mounts, 1899 Model
4 x Single mounts on centreline, evenly spread
4 double raised mounts
Weight of broadside 1,763 lbs / 799 kg

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 11.0" / 279 mm 115.00 ft / 35.05 m 7.00 ft / 2.13 m
Ends: 3.00" / 76 mm 137.00 ft / 41.76 m 7.00 ft / 2.13 m
Upper: 5.00" / 127 mm 115.00 ft / 35.05 m 5.00 ft / 1.52 m
Main Belt covers 70 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 10.0" / 254 mm 9.00" / 229 mm 11.0" / 279 mm
2nd: 1.00" / 25 mm - -
3rd: 1.00" / 25 mm - -

- Armoured deck - single deck:
For and Aft decks: 1.50" / 38 mm
Forecastle: 1.50" / 38 mm Quarter deck: 1.50" / 38 mm

- Conning towers: Forward 8.00" / 203 mm, Aft 0.00" / 0 mm

Machinery:
Coal and oil fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 1,995 ihp / 1,488 Kw = 13.00 kts
Range 2,000nm at 10.00 kts
Bunker at max displacement = 280 tons (90% coal)

Complement:
217 - 283

Cost:
£0.273 million / $1.091 million

Distribution of weights at normal displacement:
Armament: 245 tons, 7.4 %
- Guns: 245 tons, 7.4 %
Armour: 1,247 tons, 37.7 %
- Belts: 708 tons, 21.4 %
- Armament: 217 tons, 6.6 %
- Armour Deck: 284 tons, 8.6 %
- Conning Tower: 38 tons, 1.2 %
Machinery: 314 tons, 9.5 %
Hull, fittings & equipment: 1,045 tons, 31.6 %
Fuel, ammunition & stores: 313 tons, 9.5 %
Miscellaneous weights: 145 tons, 4.4 %
- Hull below water: 30 tons
- Hull above water: 30 tons
- Above deck: 85 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
3,783 lbs / 1,716 Kg = 4.4 x 12.0 " / 305 mm shells or 1.4 torpedoes
Stability (Unstable if below 1.00): 1.16
Metacentric height 2.3 ft / 0.7 m
Roll period: 13.7 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0.28
Seaboat quality (Average = 1.00): 0.76

Hull form characteristics:
Hull has a flush deck,
a ram bow and a cruiser stern
Block coefficient (normal/deep): 0.707 / 0.710
Length to Beam Ratio: 5.04 : 1
'Natural speed' for length: 15.87 kts
Power going to wave formation at top speed: 44 %
Trim (Max stability = 0, Max steadiness = 100): 79
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 %, 5.00 ft / 1.52 m, 5.00 ft / 1.52 m
- Forward deck: 30.00 %, 5.00 ft / 1.52 m, 5.00 ft / 1.52 m
- Aft deck: 35.00 %, 5.00 ft / 1.52 m, 5.00 ft / 1.52 m
- Quarter deck: 15.00 %, 5.00 ft / 1.52 m, 5.00 ft / 1.52 m
- Average freeboard: 5.00 ft / 1.52 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 67.6 %
- Above water (accommodation/working, high = better): 44.6 %
Waterplane Area: 10,162 Square feet or 944 Square metres
Displacement factor (Displacement / loading): 103 %
Structure weight / hull surface area: 94 lbs/sq ft or 460 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.19
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Extremely poor accommodation and workspace room
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

- 30 tons for additional damage control and pumps (hull below water)
- 30 tons for climate control (hull above water)
- 10 tons for short range wireless (above deck, installed 1903 @10 tons)
- 25 tons for long range wireless (above deck, installed 1903 @25 tons)
- 25 tons for 1905 fire control (above deck, installed 1907-8 @25 tons)
- 25 tons for 1905 remote sensing devices (above deck, installed 1907-8 @25 tons)

Total additional basic refit costs per ship: 85 tons

Walter · August 16, 2017, 02:18:40 PM

Freki, Norse Monitor laid down 1909

Ships: 2. Freki, Geri.

Displacement:
6,496 t light; 6,891 t standard; 6,961 t normal; 7,018 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(339.00 ft / 335.00 ft) x 62.00 ft (Bulges 87.00 ft) x (10.45 / 10.56 ft)
(103.33 m / 102.11 m) x 18.90 m (Bulges 26.52 m) x (3.19 / 3.22 m)

Armament:
1 - 15.94" / 405 mm 40.0 cal gun - 1,942.60lbs / 881.15kg shells, 100 per gun
Breech loading gun in turret on barbette mount, 1909 Model
1 x Single mount on centreline, aft deck centre
2 - 12.01" / 305 mm 50.0 cal guns - 916.46lbs / 415.70kg shells, 120 per gun
Breech loading guns in turret on barbette mount, 1909 Model
1 x 2-gun mount on centreline, forward deck centre
2 - 6.10" / 155 mm 50.0 cal guns - 120.28lbs / 54.56kg shells, 150 per gun
Breech loading guns in deck and hoist mounts, 1909 Model
2 x Single mounts on sides, forward deck aft
2 - 2.95" / 75.0 mm 50.0 cal guns - 13.62lbs / 6.18kg shells, 300 per gun
Quick firing guns in deck and hoist mounts, 1909 Model
2 x Single mounts on sides, forward deck aft
2 - 1.46" / 37.0 mm 50.0 cal guns - 1.63lbs / 0.74kg shells, 400 per gun
Quick firing guns in deck and hoist mounts, 1909 Model
2 x Single mounts on centreline, aft deck aft
2 raised mounts
Weight of broadside 4,047 lbs / 1,836 kg

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 6.00" / 152 mm 180.00 ft / 54.86 m 9.45 ft / 2.88 m
Ends: 2.00" / 51 mm 155.00 ft / 47.24 m 9.45 ft / 2.88 m
Main Belt covers 83 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 10.0" / 254 mm 6.00" / 152 mm 8.00" / 203 mm
2nd: 10.0" / 254 mm 6.00" / 152 mm 8.00" / 203 mm
3rd: 2.00" / 51 mm - -

- Armoured deck - single deck:
For and Aft decks: 2.00" / 51 mm
Forecastle: 1.00" / 25 mm Quarter deck: 1.00" / 25 mm

- Conning towers: Forward 6.00" / 152 mm, Aft 0.00" / 0 mm

Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 683 shp / 509 Kw = 8.00 kts
Range 1,100nm at 6.50 kts
Bunker at max displacement = 128 tons

Complement:
380 - 495

Cost:
£0.612 million / $2.446 million

Distribution of weights at normal displacement:
Armament: 868 tons, 12.5 %
- Guns: 868 tons, 12.5 %
Armour: 1,845 tons, 26.5 %
- Belts: 605 tons, 8.7 %
- Armament: 578 tons, 8.3 %
- Armour Deck: 615 tons, 8.8 %
- Conning Tower: 47 tons, 0.7 %
Machinery: 31 tons, 0.4 %
Hull, fittings & equipment: 3,476 tons, 49.9 %
Fuel, ammunition & stores: 466 tons, 6.7 %
Miscellaneous weights: 277 tons, 4.0 %
- Hull below water: 65 tons
- Hull above water: 65 tons
- Above deck: 147 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
17,704 lbs / 8,030 Kg = 8.7 x 15.9 " / 405 mm shells or 3.8 torpedoes
Stability (Unstable if below 1.00): 1.42
Metacentric height 4.5 ft / 1.4 m
Roll period: 17.2 seconds
Steadiness - As gun platform (Average = 50 %): 100 %
- Recoil effect (Restricted arc if above 1.00): 0.37
Seaboat quality (Average = 1.00): 1.41

Hull form characteristics:
Hull has low quarterdeck ,
a ram bow and a round stern
Block coefficient (normal/deep): 0.800 / 0.798
Length to Beam Ratio: 3.85 : 1
'Natural speed' for length: 18.30 kts
Power going to wave formation at top speed: 16 %
Trim (Max stability = 0, Max steadiness = 100): 71
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: 20.00 %, 17.25 ft / 5.26 m, 17.25 ft / 5.26 m
- Forward deck: 30.00 %, 17.25 ft / 5.26 m, 17.25 ft / 5.26 m
- Aft deck: 35.00 %, 17.25 ft / 5.26 m, 17.25 ft / 5.26 m
- Quarter deck: 15.00 %, 7.25 ft / 2.21 m, 7.25 ft / 2.21 m
- Average freeboard: 15.75 ft / 4.80 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 53.7 %
- Above water (accommodation/working, high = better): 158.0 %
Waterplane Area: 18,267 Square feet or 1,697 Square metres
Displacement factor (Displacement / loading): 120 %
Structure weight / hull surface area: 150 lbs/sq ft or 733 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.90
- Longitudinal: 2.48
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

- 65 tons for additional damage control and pumps (hull below water)
- 65 tons for climate control (hull above water)
- 10 tons for short range wireless (above deck)
- 25 tons for long range wireless (above deck)
- 87 tons for 1905 fire control (above deck)
- 25 tons for 1905 remote sensing devices (above deck)

Walter · August 16, 2017, 02:20:12 PM

Arvakr, Norse Gunboat laid down 1899
Ships: 4. Arvakr, Alsvidr, Gullfaxi, Grani.

Displacement:
655 t light; 689 t standard; 782 t normal; 856 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(180.96 ft / 180.00 ft) x 33.00 ft x (8.00 / 8.61 ft)
(55.16 m / 54.86 m) x 10.06 m x (2.44 / 2.62 m)

Armament:
2 - 3.94" / 100.0 mm 45.0 cal guns - 30.78lbs / 13.96kg shells, 250 per gun
Quick firing guns in deck mounts, 1899 Model
2 x Single mounts on centreline ends, evenly spread
4 - 2.95" / 75.0 mm 45.0 cal guns - 12.99lbs / 5.89kg shells, 350 per gun
Quick firing guns in deck mounts, 1899 Model
4 x Single mounts on sides, aft evenly spread
4 - 0.30" / 7.7 mm 87.0 cal guns - 0.02lbs / 0.01kg shells, 1,000 per gun
Machine guns in deck mounts, 1899 Model
4 x Single mounts on side ends, evenly spread
Weight of broadside 114 lbs / 52 kg

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 1.25" / 32 mm 117.00 ft / 35.66 m 13.00 ft / 3.96 m
Ends: 1.25" / 32 mm 63.00 ft / 19.20 m 19.00 ft / 5.79 m
Main Belt covers 100 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.00" / 25 mm - -
2nd: 1.00" / 25 mm - -

- Armoured deck - single deck:
For and Aft decks: 0.70" / 18 mm
Forecastle: 0.70" / 18 mm Quarter deck: 0.70" / 18 mm

- Conning towers: Forward 3.00" / 76 mm, Aft 0.00" / 0 mm

Machinery:
Coal and oil fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 1,003 ihp / 748 Kw = 13.50 kts
Range 3,000nm at 10.00 kts
Bunker at max displacement = 167 tons (90% coal)

Complement:
73 - 96

Cost:
£0.051 million / $0.203 million

Distribution of weights at normal displacement:
Armament: 21 tons, 2.7 %
- Guns: 21 tons, 2.7 %
Armour: 215 tons, 27.5 %
- Belts: 140 tons, 18.0 %
- Armament: 13 tons, 1.7 %
- Armour Deck: 55 tons, 7.1 %
- Conning Tower: 5 tons, 0.7 %
Machinery: 158 tons, 20.2 %
Hull, fittings & equipment: 207 tons, 26.4 %
Fuel, ammunition & stores: 127 tons, 16.2 %
Miscellaneous weights: 55 tons, 7.0 %
- Hull below water: 10 tons
- Hull above water: 10 tons
- Above deck: 35 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,178 lbs / 534 Kg = 38.6 x 3.9 " / 100 mm shells or 0.7 torpedoes
Stability (Unstable if below 1.00): 1.31
Metacentric height 1.5 ft / 0.5 m
Roll period: 11.2 seconds
Steadiness - As gun platform (Average = 50 %): 100 %
- Recoil effect (Restricted arc if above 1.00): 0.08
Seaboat quality (Average = 1.00): 1.19

Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.576 / 0.586
Length to Beam Ratio: 5.45 : 1
'Natural speed' for length: 13.42 kts
Power going to wave formation at top speed: 50 %
Trim (Max stability = 0, Max steadiness = 100): 84
Bow angle (Positive = bow angles forward): 5.00 degrees
Stern overhang: -2.00 ft / -0.61 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 15.00 %, 11.00 ft / 3.35 m, 11.00 ft / 3.35 m
- Forward deck: 20.00 %, 11.00 ft / 3.35 m, 11.00 ft / 3.35 m
- Aft deck: 50.00 %, 5.00 ft / 1.52 m, 5.00 ft / 1.52 m
- Quarter deck: 15.00 %, 5.00 ft / 1.52 m, 5.00 ft / 1.52 m
- Average freeboard: 7.10 ft / 2.16 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 77.6 %
- Above water (accommodation/working, high = better): 74.4 %
Waterplane Area: 4,248 Square feet or 395 Square metres
Displacement factor (Displacement / loading): 122 %
Structure weight / hull surface area: 39 lbs/sq ft or 191 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.38
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Cramped accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform

- 10 tons for additional damage control and pumps (hull below water)
- 10 tons for climate control (hull above water)
- 10 tons for short range wireless (above deck, installed 1903 @10 tons)
- 25 tons for long range wireless (above deck, installed 1903 @25 tons)

Total additional basic refit costs per ship: 35 tons

Walter · August 16, 2017, 02:20:36 PM

Sleipnir, Norse Gunboat laid down 1904
Ships: 6. Sleipnir, Blodughofi, Falhofnir, gisl, Glad, Glær.

Displacement:
809 t light; 854 t standard; 979 t normal; 1,079 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(200.96 ft / 200.00 ft) x 36.00 ft x (8.50 / 9.19 ft)
(61.25 m / 60.96 m) x 10.97 m x (2.59 / 2.80 m)

Armament:
1 - 6.10" / 155 mm 50.0 cal gun - 120.28lbs / 54.56kg shells, 150 per gun
Quick firing gun in deck and hoist mount, 1904 Model
1 x Single mount on centreline, forward deck forward
1 - 3.94" / 100.0 mm 50.0 cal gun - 32.30lbs / 14.65kg shells, 250 per gun
Quick firing gun in deck and hoist mount, 1904 Model
1 x Single mount on centreline, aft deck aft
4 - 2.95" / 75.0 mm 50.0 cal guns - 13.62lbs / 6.18kg shells, 350 per gun
Quick firing guns in deck and hoist mounts, 1904 Model
4 x Single mounts on sides, forward deck aft
4 - 0.30" / 7.7 mm 87.0 cal guns - 0.02lbs / 0.01kg shells, 1,000 per gun
Machine guns in deck mounts, 1904 Model
4 x Single mounts on side ends, evenly spread
Weight of broadside 207 lbs / 94 kg

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 1.25" / 32 mm 200.00 ft / 60.96 m 18.50 ft / 5.64 m
Main Belt covers 154 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.00" / 25 mm - -
2nd: 1.00" / 25 mm - -
3rd: 1.00" / 25 mm - -

- Armoured deck - single deck:
For and Aft decks: 0.75" / 19 mm
Forecastle: 0.75" / 19 mm Quarter deck: 0.75" / 19 mm

- Conning towers: Forward 3.00" / 76 mm, Aft 0.00" / 0 mm

Machinery:
Coal and oil fired boilers, steam turbines,
Direct drive, 2 shafts, 957 shp / 714 Kw = 13.00 kts
Range 3,000nm at 10.00 kts
Bunker at max displacement = 226 tons (90% coal)

Complement:
86 - 113

Cost:
£0.064 million / $0.256 million

Distribution of weights at normal displacement:
Armament: 63 tons, 6.5 %
- Guns: 63 tons, 6.5 %
Armour: 262 tons, 26.8 %
- Belts: 171 tons, 17.5 %
- Armament: 14 tons, 1.4 %
- Armour Deck: 71 tons, 7.2 %
- Conning Tower: 6 tons, 0.7 %
Machinery: 95 tons, 9.7 %
Hull, fittings & equipment: 334 tons, 34.1 %
Fuel, ammunition & stores: 170 tons, 17.4 %
Miscellaneous weights: 55 tons, 5.6 %
- Hull below water: 10 tons
- Hull above water: 10 tons
- Above deck: 35 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2,545 lbs / 1,154 Kg = 22.4 x 6.1 " / 155 mm shells or 1.3 torpedoes
Stability (Unstable if below 1.00): 1.41
Metacentric height 2.0 ft / 0.6 m
Roll period: 10.8 seconds
Steadiness - As gun platform (Average = 50 %): 100 %
- Recoil effect (Restricted arc if above 1.00): 0.30
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has a flush deck,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.560 / 0.571
Length to Beam Ratio: 5.56 : 1
'Natural speed' for length: 14.14 kts
Power going to wave formation at top speed: 44 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 5.00 degrees
Stern overhang: -2.00 ft / -0.61 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 11.00 ft / 3.35 m, 10.00 ft / 3.05 m
- Forward deck: 40.00 %, 10.00 ft / 3.05 m, 10.00 ft / 3.05 m
- Aft deck: 25.00 %, 10.00 ft / 3.05 m, 10.00 ft / 3.05 m
- Quarter deck: 15.00 %, 10.00 ft / 3.05 m, 10.00 ft / 3.05 m
- Average freeboard: 10.08 ft / 3.07 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 56.4 %
- Above water (accommodation/working, high = better): 112.3 %
Waterplane Area: 5,072 Square feet or 471 Square metres
Displacement factor (Displacement / loading): 136 %
Structure weight / hull surface area: 52 lbs/sq ft or 253 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.89
- Longitudinal: 2.68
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Adequate 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

- 10 tons for additional damage control and pumps (hull below water)
- 10 tons for climate control (hull above water)
- 10 tons for short range wireless (above deck)
- 25 tons for long range wireless (above deck)

Walter · August 16, 2017, 02:20:57 PM

RGB-1 class, Norse River Gunboat laid down 1900
Ships: 80. Numbered RGB-1 to RGB-80.

Displacement:
41 t light; 44 t standard; 45 t normal; 46 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(80.00 ft / 80.00 ft) x 14.00 ft x (1.75 / 1.78 ft)
(24.38 m / 24.38 m) x 4.27 m x (0.53 / 0.54 m)

Armament:
1 - 2.95" / 75.0 mm 45.0 cal gun - 12.99lbs / 5.89kg shells, 300 per gun
Quick firing gun in deck and hoist mount, 1900 Model
1 x Single mount on centreline, forward deck forward
5 - 0.30" / 7.7 mm 87.0 cal guns - 0.02lbs / 0.01kg shells, 1,000 per gun
Machine guns in deck mounts, 1900 Model
1 x Single mount on centreline, aft deck aft
4 x Single mounts on sides, evenly spread
Weight of broadside 13 lbs / 6 kg

Machinery:
Coal and oil fired boilers, complex reciprocating steam engines,
Direct drive, 1 shaft, 36 ihp / 27 Kw = 8.00 kts
Range 1,000nm at 4.00 kts
Bunker at max displacement = 2 tons (90% coal)

Complement:
8 - 11

Cost:
£0.004 million / $0.015 million

Distribution of weights at normal displacement:
Armament: 4 tons, 9.1 %
- Guns: 4 tons, 9.1 %
Machinery: 6 tons, 12.5 %
Hull, fittings & equipment: 21 tons, 46.8 %
Fuel, ammunition & stores: 4 tons, 9.2 %
Miscellaneous weights: 10 tons, 22.3 %
- Hull below water: 5 tons
- Hull above water: 5 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
86 lbs / 39 Kg = 6.7 x 3.0 " / 75 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.37
Metacentric height 0.5 ft / 0.1 m
Roll period: 8.7 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.24
Seaboat quality (Average = 1.00): 1.07

Hull form characteristics:
Hull has a flush deck,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.800 / 0.801
Length to Beam Ratio: 5.71 : 1
'Natural speed' for length: 8.94 kts
Power going to wave formation at top speed: 39 %
Trim (Max stability = 0, Max steadiness = 100): 66
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 %, 3.75 ft / 1.14 m, 3.50 ft / 1.07 m
- Forward deck: 30.00 %, 3.50 ft / 1.07 m, 3.50 ft / 1.07 m
- Aft deck: 35.00 %, 3.50 ft / 1.07 m, 3.50 ft / 1.07 m
- Quarter deck: 15.00 %, 3.50 ft / 1.07 m, 3.50 ft / 1.07 m
- Average freeboard: 3.52 ft / 1.07 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 97.0 %
- Above water (accommodation/working, high = better): 82.1 %
Waterplane Area: 985 Square feet or 92 Square metres
Displacement factor (Displacement / loading): 129 %
Structure weight / hull surface area: 19 lbs/sq ft or 95 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.82
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Cramped accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform

- 5 tons for additional damage control and pumps (hull below water)
- 5 tons for climate control (hull above water)

Walter · August 16, 2017, 02:21:31 PM

RGB-81 class, Norse River Gunboat laid down 1906
Ships: 20. Numbered RGB-81 to RGB-100.

Displacement:
101 t light; 106 t standard; 108 t normal; 109 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(100.00 ft / 100.00 ft) x 16.50 ft x (2.75 / 2.79 ft)
(30.48 m / 30.48 m) x 5.03 m x (0.84 / 0.85 m)

Armament:
1 - 2.95" / 75.0 mm 50.0 cal gun - 13.62lbs / 6.18kg shells, 300 per gun
Quick firing gun in deck and hoist mount, 1906 Model
1 x Single mount on centreline, forward deck forward
5 - 0.59" / 15.0 mm 90.0 cal guns - 0.11lbs / 0.05kg shells, 800 per gun
Machine guns in deck mounts, 1906 Model
3 x Single mounts on centreline ends, majority aft
2 raised mounts - superfiring
2 x Single mounts on centreline ends, evenly spread
2 double raised mounts
18 - 0.26" / 6.5 mm 115.0 cal guns - 0.01lbs / 0.00kg shells, 1,200 per gun
Machine guns in deck mounts, 1906 Model
6 x Single mounts on centreline ends, evenly spread
6 raised mounts - superfiring
12 x Single mounts on sides, evenly spread
6 double raised mounts
Weight of broadside 14 lbs / 7 kg

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 0.80" / 20 mm 100.00 ft / 30.48 m 6.35 ft / 1.94 m
Main Belt covers 154 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.50" / 38 mm - -

- Protected deck - single deck:
For and Aft decks: 0.80" / 20 mm
Forecastle: 0.80" / 20 mm Quarter deck: 0.80" / 20 mm

- Conning towers: Forward 0.80" / 20 mm, Aft 0.00" / 0 mm

Machinery:
Coal fired boilers, steam turbines,
Direct drive, 1 shaft, 56 shp / 42 Kw = 8.00 kts
Range 1,000nm at 4.00 kts
Bunker at max displacement = 4 tons (100% coal)

Complement:
16 - 21

Cost:
£0.006 million / $0.026 million

Distribution of weights at normal displacement:
Armament: 6 tons, 5.8 %
- Guns: 6 tons, 5.8 %
Armour: 45 tons, 41.6 %
- Belts: 19 tons, 17.5 %
- Armament: 3 tons, 3.1 %
- Armour Deck: 22 tons, 20.7 %
- Conning Tower: 0 tons, 0.4 %
Machinery: 4 tons, 3.7 %
Hull, fittings & equipment: 36 tons, 33.3 %
Fuel, ammunition & stores: 7 tons, 6.3 %
Miscellaneous weights: 10 tons, 9.3 %
- Hull below water: 5 tons
- Hull above water: 5 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
342 lbs / 155 Kg = 26.6 x 3.0 " / 75 mm shells or 0.7 torpedoes
Stability (Unstable if below 1.00): 1.33
Metacentric height 0.6 ft / 0.2 m
Roll period: 9.3 seconds
Steadiness - As gun platform (Average = 50 %): 75 %
- Recoil effect (Restricted arc if above 1.00): 0.15
Seaboat quality (Average = 1.00): 1.10

Hull form characteristics:
Hull has a flush deck,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.830 / 0.831
Length to Beam Ratio: 6.06 : 1
'Natural speed' for length: 10.00 kts
Power going to wave formation at top speed: 36 %
Trim (Max stability = 0, Max steadiness = 100): 68
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 %, 4.60 ft / 1.40 m, 3.60 ft / 1.10 m
- Forward deck: 30.00 %, 3.60 ft / 1.10 m, 3.60 ft / 1.10 m
- Aft deck: 35.00 %, 3.60 ft / 1.10 m, 3.60 ft / 1.10 m
- Quarter deck: 15.00 %, 3.60 ft / 1.10 m, 4.00 ft / 1.22 m
- Average freeboard: 3.71 ft / 1.13 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 43.9 %
- Above water (accommodation/working, high = better): 64.0 %
Waterplane Area: 1,493 Square feet or 139 Square metres
Displacement factor (Displacement / loading): 127 %
Structure weight / hull surface area: 22 lbs/sq ft or 106 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.24
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Cramped accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform

- 5 tons for additional damage control and pumps (hull below water)
- 5 tons for climate control (hull above water)