Mauritius, laid down 1914, rebuild 1937
Réunion, laid down 1914, rebuild 1939
Displacement:
27.057 t light; 28.991 t standard; 32.264 t normal; 34.754 t full load
Loading submergence 1.327 tons/feet
Dimensions:
623,36 ft x 98,43 ft x 27,89 ft (normal load)
190,00 m x 30,00 m x 8,50 m
Armament:
8 - 14,96" / 380 mm guns (4 Main turrets x 2 guns, 2 superfiring turrets)
16 - 5,91" / 150 mm guns
12 - 3,46" / 88 mm AA guns
8 - 3,46" / 88 mm guns
Weight of broadside 15.457 lbs / 7.011 kg
Armour:
Belt 14,17" / 360 mm, upper belt 7,87" / 200 mm, end belts 5,91" / 150 mm
Belts cover 79% of normal area
Main turrets 13,78" / 350 mm, 2nd gun shields 7,87" / 200 mm
AA gun shields 1,97" / 50 mm, Light gun shields 0,98" / 25 mm
Armour deck 3,15" / 80 mm, Conning tower 14,17" / 360 mm
Torpedo bulkhead 0,98" / 25 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 40.215 shp / 30.000 Kw = 21,47 kts
Range 14.500nm at 12,00 kts
Complement:
1.203 - 1.564
Cost:
£3,547 million / $14,188 million
Distribution of weights at normal displacement:
Armament: 1.932 tons, 6,0%
Armour: 10.981 tons, 34,0%
Belts: 3.659 tons, 11,3%, Armament: 3.893 tons, 12,1%, Armour Deck: 2.706 tons, 8,4%
Conning Tower: 311 tons, 1,0%, Torpedo bulkhead: 411 tons, 1,3%
Machinery: 1.549 tons, 4,8%
Hull, fittings & equipment: 12.545 tons, 38,9%
Fuel, ammunition & stores: 5.207 tons, 16,1%
Miscellaneous weights: 50 tons, 0,2%
Metacentric height 5,2
Remarks:
Hull space for machinery, storage & compartmentation is excellent
Room for accommodation & workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily
Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1,03
Shellfire needed to sink: 37.220 lbs / 16.883 Kg = 22,2 x 15,0 " / 380 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 5,4
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 70 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0,68
Relative quality as seaboat: 1,31
Hull form characteristics:
Block coefficient: 0,660
Sharpness coefficient: 0,44
Hull speed coefficient 'M': 5,99
'Natural speed' for length: 24,97 kts
Power going to wave formation at top speed: 44 %
Trim: 53
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 78,6%
Relative accommodation and working space: 140,7%
(Average = 100%)
Displacement factor: 109%
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 1,00
(Structure weight / hull surface area: 200 lbs / square foot or 978 Kg / square metre)
Relative longitudinal hull strength: 1,34
(for 19,13 ft / 5,83 m average freeboard, freeboard adjustment -0,01 ft)
Relative composite hull strength: 1,03
Mauritius Rebuild:
Displacement:
28.967 t light; 30.359 t standard; 32.944 t normal; 35.012 t full load
Dimensions: Length overall / water x beam x draught
650,25 ft / 636,48 ft x 98,43 ft x 27,89 ft (normal load)
198,20 m / 194,00 m x 30,00 m x 8,50 m
Armament:
8 - 14,96" / 380 mm guns (4x2 guns), 1.818,81lbs / 825,00kg shells, 1937 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
16 - 4,53" / 115 mm guns (8x2 guns), 46,40lbs / 21,05kg shells, 1937 Model
Breech loading guns in deck mounts with hoists
on side, all amidships, 4 raised mounts - superfiring
16 - 1,57" / 40,0 mm guns (4x4 guns), 1,95lbs / 0,88kg shells, 1937 Model
Dual purpose guns in deck mounts
on side, evenly spread, all raised mounts
12 - 0,79" / 20,0 mm guns (2x6 guns), 0,24lbs / 0,11kg shells, 1937 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
12 - 0,79" / 20,0 mm guns in single mounts, 0,24lbs / 0,11kg shells, 1937 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 15.330 lbs / 6.954 kg
Shells per gun, main battery: 85
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 14,2" / 360 mm 367,45 ft / 112,00 m 10,50 ft / 3,20 m
Ends: Unarmoured
Main Belt covers 89% of normal length
- Torpedo Bulkhead:
0,98" / 25 mm 367,45 ft / 112,00 m 27,89 ft / 8,50 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 13,8" / 350 mm 8,66" / 220 mm 13,8" / 350 mm
2nd: 1,97" / 50 mm 1,18" / 30 mm 1,97" / 50 mm
3rd: 0,59" / 15 mm - -
4th: 0,39" / 10 mm - -
5th: 0,39" / 10 mm - -
- Armour deck: 4,92" / 125 mm, Conning tower: 1,97" / 50 mm
Machinery:
Oil fired boilers, steam turbines,
Electric motors, 4 shafts, 107.239 shp / 80.000 Kw = 27,54 kts
Range 10.200nm at 15,00 kts
Bunker at max displacement = 4.653 tons
Complement:
1.222 - 1.589
Cost:
£15,917 million / $63,669 million
Distribution of weights at normal displacement:
Armament: 1.772 tons, 5,4%
Armour: 10.893 tons, 33,1%
- Belts: 2.466 tons, 7,5%
- Torpedo bulkhead: 373 tons, 1,1%
- Armament: 3.601 tons, 10,9%
- Armour Deck: 4.409 tons, 13,4%
- Conning Tower: 44 tons, 0,1%
Machinery: 2.972 tons, 9,0%
Hull, fittings & equipment: 13.230 tons, 40,2%
Fuel, ammunition & stores: 3.977 tons, 12,1%
Miscellaneous weights: 100 tons, 0,3%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
48.455 lbs / 21.979 Kg = 28,9 x 15,0 " / 380 mm shells or 6,8 torpedoes
Stability (Unstable if below 1.00): 1,05
Metacentric height 5,4 ft / 1,6 m
Roll period: 17,8 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0,84
Seaboat quality (Average = 1.00): 1,00
Hull form characteristics:
Hull has low quarterdeck
Block coefficient: 0,660
Length to Beam Ratio: 6,47 : 1
'Natural speed' for length: 25,23 kts
Power going to wave formation at top speed: 57 %
Trim (Max stability = 0, Max steadiness = 100): 51
Bow angle (Positive = bow angles forward): 25,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 29,53 ft / 9,00 m
- Forecastle (20%): 24,28 ft / 7,40 m
- Mid (75%): 24,28 ft / 7,40 m
- Quarterdeck (15%): 16,40 ft / 5,00 m (24,28 ft / 7,40 m before break)
- Stern: 16,40 ft / 5,00 m
- Average freeboard: 23,52 ft / 7,17 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 88,1%
- Above water (accommodation/working, high = better): 183,3%
Waterplane Area: 48.431 Square feet or 4.499 Square metres
Displacement factor (Displacement / loading): 106%
Structure weight / hull surface area: 198 lbs/sq ft or 965 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,95
- Longitudinal: 1,62
- Overall: 1,00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Réunion Rebuild:
Displacement:
28.941 t light; 30.333 t standard; 32.944 t normal; 35.032 t full load
Dimensions: Length overall / water x beam x draught
650,25 ft / 636,48 ft x 98,43 ft x 27,89 ft (normal load)
198,20 m / 194,00 m x 30,00 m x 8,50 m
Armament:
8 - 14,96" / 380 mm guns (4x2 guns), 1.818,81lbs / 825,00kg shells, 1939 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
16 - 4,53" / 115 mm guns (8x2 guns), 46,40lbs / 21,05kg shells, 1939 Model
Breech loading guns in deck mounts with hoists
on side, all amidships, 4 raised mounts - superfiring
20 - 1,57" / 40,0 mm guns (6 mounts), 1,95lbs / 0,88kg shells, 1939 Model
Dual purpose guns in deck mounts
on side, evenly spread, 16 raised guns
12 - 0,79" / 20,0 mm guns (2x6 guns), 0,24lbs / 0,11kg shells, 1939 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
12 - 0,79" / 20,0 mm guns in single mounts, 0,24lbs / 0,11kg shells, 1939 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 15.338 lbs / 6.957 kg
Shells per gun, main battery: 85
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 14,2" / 360 mm 367,45 ft / 112,00 m 10,50 ft / 3,20 m
Ends: Unarmoured
Main Belt covers 89% of normal length
- Torpedo Bulkhead:
0,98" / 25 mm 367,45 ft / 112,00 m 27,89 ft / 8,50 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 13,8" / 350 mm 8,66" / 220 mm 13,8" / 350 mm
2nd: 1,97" / 50 mm 1,18" / 30 mm 1,97" / 50 mm
3rd: 0,59" / 15 mm - -
4th: 0,39" / 10 mm - -
5th: 0,39" / 10 mm - -
- Armour deck: 4,92" / 125 mm, Conning tower: 1,97" / 50 mm
Machinery:
Oil fired boilers, steam turbines,
Electric motors, 4 shafts, 107.239 shp / 80.000 Kw = 27,54 kts
Range 10.500nm at 15,00 kts
Bunker at max displacement = 4.699 tons
Complement:
1.222 - 1.589
Cost:
£16,920 million / $67,681 million
Distribution of weights at normal displacement:
Armament: 1.773 tons, 5,4%
Armour: 10.895 tons, 33,1%
- Belts: 2.466 tons, 7,5%
- Torpedo bulkhead: 373 tons, 1,1%
- Armament: 3.603 tons, 10,9%
- Armour Deck: 4.409 tons, 13,4%
- Conning Tower: 44 tons, 0,1%
Machinery: 2.901 tons, 8,8%
Hull, fittings & equipment: 13.271 tons, 40,3%
Fuel, ammunition & stores: 4.003 tons, 12,2%
Miscellaneous weights: 100 tons, 0,3%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
48.995 lbs / 22.224 Kg = 29,3 x 15,0 " / 380 mm shells or 6,9 torpedoes
Stability (Unstable if below 1.00): 1,05
Metacentric height 5,4 ft / 1,6 m
Roll period: 17,8 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0,85
Seaboat quality (Average = 1.00): 1,00
Hull form characteristics:
Hull has low quarterdeck
Block coefficient: 0,660
Length to Beam Ratio: 6,47 : 1
'Natural speed' for length: 25,23 kts
Power going to wave formation at top speed: 57 %
Trim (Max stability = 0, Max steadiness = 100): 51
Bow angle (Positive = bow angles forward): 25,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 29,53 ft / 9,00 m
- Forecastle (20%): 24,28 ft / 7,40 m
- Mid (75%): 24,28 ft / 7,40 m
- Quarterdeck (15%): 16,40 ft / 5,00 m (24,28 ft / 7,40 m before break)
- Stern: 16,40 ft / 5,00 m
- Average freeboard: 23,52 ft / 7,17 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 87,3%
- Above water (accommodation/working, high = better): 183,3%
Waterplane Area: 48.431 Square feet or 4.499 Square metres
Displacement factor (Displacement / loading): 106%
Structure weight / hull surface area: 198 lbs/sq ft or 968 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,95
- Longitudinal: 1,63
- Overall: 1,00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent