WesWorld

Quoted

Krum, Bulgarian Monitor laid down 1937

Displacement:
331 t light; 350 t standard; 354 t normal; 357 t full load

Dimensions: Length overall / water x beam x draught
183.73 ft / 183.73 ft x 31.17 ft x 3.94 ft (normal load)
56.00 m / 56.00 m x 9.50 m x 1.20 m

Armament:
2 - 5.12" / 130 mm guns in single mounts, 67.02lbs / 30.40kg shells, 1937 Model
Breech loading guns in deck mounts
on centreline ends, evenly spread
4 - 1.57" / 40.0 mm guns (2x2 guns), 1.95lbs / 0.89kg shells, 1937 Model
Anti-aircraft guns in deck mounts
on centreline ends, evenly spread
6 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1937 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 143 lbs / 65 kg
Shells per gun, main battery: 150

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 0.79" / 20 mm 119.42 ft / 36.40 m 6.70 ft / 2.04 m
Ends: Unarmoured
Main Belt covers 100 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.57" / 40 mm 1.18" / 30 mm -
2nd: 0.79" / 20 mm 0.39" / 10 mm -
3rd: 0.79" / 20 mm 0.39" / 10 mm -

- Armour deck: 0.79" / 20 mm, Conning tower: 1.18" / 30 mm

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 222 shp / 166 Kw = 10.00 kts
Range 300nm at 10.00 kts
Bunker at max displacement = 7 tons

Complement:
40 - 53

Cost:
£0.150 million / $0.600 million

Distribution of weights at normal displacement:
Armament: 18 tons, 5.1 %
Armour: 101 tons, 28.5 %
- Belts: 28 tons, 7.8 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 14 tons, 3.9 %
- Armour Deck: 58 tons, 16.4 %
- Conning Tower: 1 tons, 0.4 %
Machinery: 6 tons, 1.7 %
Hull, fittings & equipment: 206 tons, 58.0 %
Fuel, ammunition & stores: 23 tons, 6.6 %
Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,802 lbs / 818 Kg = 26.9 x 5.1 " / 130 mm shells or 1.4 torpedoes
Stability (Unstable if below 1.00): 1.25
Metacentric height 1.3 ft / 0.4 m
Roll period: 11.5 seconds
Steadiness - As gun platform (Average = 50 %): 81 %
- 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: 0.550
Length to Beam Ratio: 5.89 : 1
'Natural speed' for length: 13.55 kts
Power going to wave formation at top speed: 28 %
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: 14.76 ft / 4.50 m
- Forecastle (20 %): 9.84 ft / 3.00 m
- Mid (50 %): 9.84 ft / 3.00 m
- Quarterdeck (15 %): 9.84 ft / 3.00 m
- Stern: 9.84 ft / 3.00 m
- Average freeboard: 10.24 ft / 3.12 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 45.9 %
- Above water (accommodation/working, high = better): 187.3 %
Waterplane Area: 3,996 Square feet or 371 Square metres
Displacement factor (Displacement / loading): 138 %
Structure weight / hull surface area: 38 lbs/sq ft or 185 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.89
- Longitudinal: 2.93
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Quoted

Artillery Gunbarge, Bulgarian Landing Craft laid down 1940

Displacement:
188 t light; 196 t standard; 200 t normal; 203 t full load

Dimensions: Length overall / water x beam x draught
155.94 ft / 154.20 ft x 21.33 ft x 4.76 ft (normal load)
47.53 m / 47.00 m x 6.50 m x 1.45 m

Armament:
2 - 3.46" / 88.0 mm guns (1x2 guns), 20.79lbs / 9.43kg shells, 1940 Model
Quick firing guns in deck mount
on centreline forward
2 - 1.46" / 37.0 mm guns in single mounts, 1.55lbs / 0.70kg shells, 1940 Model
Anti-aircraft guns in deck mounts
on side, all amidships
2 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1940 Model
Breech loading guns in deck mounts
on side, evenly spread
Weight of broadside 45 lbs / 20 kg
Shells per gun, main battery: 150

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.79" / 20 mm 0.59" / 15 mm -
2nd: 0.39" / 10 mm 0.39" / 10 mm -
3rd: 0.39" / 10 mm 0.39" / 10 mm -

- Conning tower: 0.79" / 20 mm

Machinery:
Diesel Internal combustion motors,
Geared drive, 3 shafts, 153 shp / 114 Kw = 10.50 kts
Range 1,000nm at 8.00 kts
Bunker at max displacement = 6 tons

Complement:
26 - 34

Cost:
£0.071 million / $0.286 million

Distribution of weights at normal displacement:
Armament: 6 tons, 2.8 %
Armour: 5 tons, 2.3 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 4 tons, 2.0 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 1 tons, 0.3 %
Machinery: 4 tons, 2.0 %
Hull, fittings & equipment: 174 tons, 87.1 %
Fuel, ammunition & stores: 11 tons, 5.7 %
Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,100 lbs / 499 Kg = 52.9 x 3.5 " / 88 mm shells or 1.6 torpedoes
Stability (Unstable if below 1.00): 1.18
Metacentric height 0.7 ft / 0.2 m
Roll period: 10.9 seconds
Steadiness - As gun platform (Average = 50 %): 53 %
- Recoil effect (Restricted arc if above 1.00): 0.14
Seaboat quality (Average = 1.00): 1.43

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.447
Length to Beam Ratio: 7.23 : 1
'Natural speed' for length: 14.68 kts
Power going to wave formation at top speed: 32 %
Trim (Max stability = 0, Max steadiness = 100): 37
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: 9.84 ft / 3.00 m
- Forecastle (20 %): 6.56 ft / 2.00 m
- Mid (50 %): 6.56 ft / 2.00 m
- Quarterdeck (15 %): 6.56 ft / 2.00 m
- Stern: 6.56 ft / 2.00 m
- Average freeboard: 6.82 ft / 2.08 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 30.0 %
- Above water (accommodation/working, high = better): 104.5 %
Waterplane Area: 2,173 Square feet or 202 Square metres
Displacement factor (Displacement / loading): 345 %
Structure weight / hull surface area: 56 lbs/sq ft or 272 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.90
- Longitudinal: 4.18
- Overall: 2.06
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Good seaboat, rides out heavy weather easily

Quoted

Vrabche (Sparrow), Bulgarian River Gunboat laid down 1936

Displacement:
100 t light; 112 t standard; 115 t normal; 117 t full load

Dimensions: Length overall / water x beam x draught
111.76 ft / 110.00 ft x 18.00 ft x 5.00 ft (normal load)
34.07 m / 33.53 m x 5.49 m x 1.52 m

Armament:
2 - 3.46" / 88.0 mm guns in single mounts, 20.79lbs / 9.43kg shells, 1936 Model
Quick firing guns in deck mounts with hoists
on centreline ends, evenly spread
2 - 1.57" / 40.0 mm guns in single mounts, 1.95lbs / 0.88kg shells, 1936 Model
Anti-aircraft guns in deck mounts
on side, all amidships
4 - 0.79" / 20.0 mm guns (2x2 guns), 0.24lbs / 0.11kg shells, 1936 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 46 lbs / 21 kg
Shells per gun, main battery: 350

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.00" / 25 mm 0.50" / 13 mm 0.50" / 13 mm

- Conning tower: 1.00" / 25 mm

Machinery:
Diesel Internal combustion motors,
Direct drive, 2 shafts, 287 shp / 214 Kw = 13.00 kts
Range 400nm at 12.00 kts
Bunker at max displacement = 5 tons

Complement:
16 - 22

Cost:
£0.050 million / $0.201 million

Distribution of weights at normal displacement:
Armament: 6 tons, 5.0 %
Armour: 4 tons, 3.4 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 3 tons, 3.0 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 1 tons, 0.4 %
Machinery: 8 tons, 7.0 %
Hull, fittings & equipment: 72 tons, 63.0 %
Fuel, ammunition & stores: 15 tons, 12.9 %
Miscellaneous weights: 10 tons, 8.7 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
240 lbs / 109 Kg = 11.5 x 3.5 " / 88 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.06
Metacentric height 0.4 ft / 0.1 m
Roll period: 11.6 seconds
Steadiness - As gun platform (Average = 50 %): 66 %
- Recoil effect (Restricted arc if above 1.00): 0.74
Seaboat quality (Average = 1.00): 1.90

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.407
Length to Beam Ratio: 6.11 : 1
'Natural speed' for length: 10.49 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 35
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: 10.00 ft / 3.05 m
- Forecastle (20 %): 7.00 ft / 2.13 m
- Mid (50 %): 7.00 ft / 2.13 m
- Quarterdeck (15 %): 7.00 ft / 2.13 m
- Stern: 7.00 ft / 2.13 m
- Average freeboard: 7.24 ft / 2.21 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 77.0 %
- Above water (accommodation/working, high = better): 102.0 %
Waterplane Area: 1,224 Square feet or 114 Square metres
Displacement factor (Displacement / loading): 151 %
Structure weight / hull surface area: 33 lbs/sq ft or 162 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.86
- Longitudinal: 7.48
- Overall: 1.07
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Excellent seaboat, comfortable, can fire her guns in the heaviest weather