Trade Protection Cruisers of the Royal Navy, of the United Norman Kingdom
Tuna Class, ACM Trade Heavy Cruiser laid down 1892
Displacement:
4,767 t light; 4,973 t standard; 6,004 t normal; 6,828 t full load
Dimensions: Length overall / water x beam x draught
375.00 ft / 375.00 ft x 55.00 ft x 18.00 ft (normal load)
114.30 m / 114.30 m x 16.76 m x 5.49 m
Armament:
4 - 6.00" / 152 mm guns (2x2 guns), 108.00lbs / 48.99kg shells, 1892 Model
Breech loading guns in turrets (on barbettes)
on side ends, evenly spread
8 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1892 Model
Breech loading guns in deck mounts
on side, all amidships
6 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1892 Model
Quick firing guns in deck mounts
on side, evenly spread
4 - 0.30" / 7.6 mm guns in single mounts, 0.01lbs / 0.00kg shells, 1892 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 1,377 lbs / 625 kg
Shells per gun, main battery: 100
6 - 16.0" / 406.4 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 5.00" / 127 mm 300.00 ft / 91.44 m 8.00 ft / 2.44 m
Ends: 3.00" / 76 mm 75.00 ft / 22.86 m 8.00 ft / 2.44 m
Main Belt covers 123 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 5.00" / 127 mm 3.00" / 76 mm 3.00" / 76 mm
2nd: 3.00" / 76 mm - -
- Armour deck: 0.50" / 13 mm, Conning tower: 3.00" / 76 mm
Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 8,429 ihp / 6,288 Kw = 18.19 kts
Range 9,000nm at 10.00 kts
Bunker at max displacement = 1,856 tons (100% coal)
Complement:
340 - 443
Cost:
£0.522 million / $2.089 million
Distribution of weights at normal displacement:
Armament: 172 tons, 2.9 %
Armour: 905 tons, 15.1 %
- Belts: 564 tons, 9.4 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 185 tons, 3.1 %
- Armour Deck: 135 tons, 2.3 %
- Conning Tower: 21 tons, 0.4 %
Machinery: 1,505 tons, 25.1 %
Hull, fittings & equipment: 1,834 tons, 30.5 %
Fuel, ammunition & stores: 1,237 tons, 20.6 %
Miscellaneous weights: 350 tons, 5.8 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
5,535 lbs / 2,511 Kg = 51.2 x 6.0 " / 152 mm shells or 1.1 torpedoes
Stability (Unstable if below 1.00): 1.45
Metacentric height 3.9 ft / 1.2 m
Roll period: 11.8 seconds
Steadiness - As gun platform (Average = 50 %): 80 %
- Recoil effect (Restricted arc if above 1.00): 0.21
Seaboat quality (Average = 1.00): 1.61
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.566
Length to Beam Ratio: 6.82 : 1
'Natural speed' for length: 19.36 kts
Power going to wave formation at top speed: 45 %
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 (% = measuring location as a percentage of overall length):
- Stem: 16.00 ft / 4.88 m
- Forecastle (20 %): 12.00 ft / 3.66 m
- Mid (50 %): 12.00 ft / 3.66 m
- Quarterdeck (15 %): 12.00 ft / 3.66 m
- Stern: 12.00 ft / 3.66 m
- Average freeboard: 12.32 ft / 3.76 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 109.4 %
- Above water (accommodation/working, high = better): 86.8 %
Waterplane Area: 14,612 Square feet or 1,357 Square metres
Displacement factor (Displacement / loading): 106 %
Structure weight / hull surface area: 87 lbs/sq ft or 427 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.43
- Overall: 1.01
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
For Sale 1st Jan 1906
Cod Class, ACM Trade Protected Cruiser laid down 1895
Displacement:
3,107 t light; 3,233 t standard; 3,998 t normal; 4,611 t full load
Dimensions: Length overall / water x beam x draught
350.00 ft / 350.00 ft x 40.00 ft x 17.00 ft (normal load)
106.68 m / 106.68 m x 12.19 m x 5.18 m
Armament:
2 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1895 Model
Breech loading guns in deck mounts
on centreline ends, evenly spread
4 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1895 Model
Breech loading guns in deck mounts
on side, all amidships
6 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1895 Model
Quick firing guns in deck mounts
on side, evenly spread
4 - 0.30" / 7.6 mm guns in single mounts, 0.01lbs / 0.00kg shells, 1895 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 729 lbs / 331 kg
Shells per gun, main battery: 100
2 - 20.0" / 508 mm submerged torpedo tubes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.00" / 76 mm 300.00 ft / 91.44 m 8.00 ft / 2.44 m
Ends: 1.00" / 25 mm 50.00 ft / 15.24 m 8.00 ft / 2.44 m
Main Belt covers 132 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.00" / 76 mm - -
2nd: 3.00" / 76 mm - -
- Armour deck: 0.50" / 13 mm, Conning tower: 3.00" / 76 mm
Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 6,989 ihp / 5,214 Kw = 18.48 kts
Range 9,000nm at 10.00 kts
Bunker at max displacement = 1,378 tons (100% coal)
Complement:
250 - 326
Cost:
£0.351 million / $1.405 million
Distribution of weights at normal displacement:
Armament: 91 tons, 2.3 %
Armour: 479 tons, 12.0 %
- Belts: 306 tons, 7.6 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 63 tons, 1.6 %
- Armour Deck: 94 tons, 2.3 %
- Conning Tower: 16 tons, 0.4 %
Machinery: 1,185 tons, 29.6 %
Hull, fittings & equipment: 1,053 tons, 26.3 %
Fuel, ammunition & stores: 892 tons, 22.3 %
Miscellaneous weights: 300 tons, 7.5 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2,609 lbs / 1,184 Kg = 24.2 x 6.0 " / 152 mm shells or 0.6 torpedoes
Stability (Unstable if below 1.00): 1.36
Metacentric height 2.2 ft / 0.7 m
Roll period: 11.4 seconds
Steadiness - As gun platform (Average = 50 %): 87 %
- Recoil effect (Restricted arc if above 1.00): 0.26
Seaboat quality (Average = 1.00): 1.74
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.588
Length to Beam Ratio: 8.75 : 1
'Natural speed' for length: 18.71 kts
Power going to wave formation at top speed: 45 %
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 (% = measuring location as a percentage of overall length):
- Stem: 17.00 ft / 5.18 m
- Forecastle (20 %): 12.00 ft / 3.66 m
- Mid (50 %): 12.00 ft / 3.66 m
- Quarterdeck (15 %): 12.00 ft / 3.66 m
- Stern: 12.00 ft / 3.66 m
- Average freeboard: 12.40 ft / 3.78 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 128.8 %
- Above water (accommodation/working, high = better): 92.6 %
Waterplane Area: 10,125 Square feet or 941 Square metres
Displacement factor (Displacement / loading): 103 %
Structure weight / hull surface area: 63 lbs/sq ft or 310 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.48
- Overall: 0.99
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
For sale as of 1st Jan 1906