A monitor for Yugoslavia, designed to fit in a Type 0 slip.
Thoughts?
Zagreb, Yugoslavia Monitor laid down 1937
Displacement:
1,000 t light; 1,049 t standard; 1,100 t normal; 1,141 t full load
Dimensions: Length overall / water x beam x draught
220.00 ft / 220.00 ft x 35.00 ft x 10.00 ft (normal load)
67.06 m / 67.06 m x 10.67 m x 3.05 m
Armament:
2 - 7.87" / 200 mm guns (1x2 guns), 243.72lbs / 110.55kg shells, 1937 Model
Breech loading guns in a turret (on a barbette)
on centreline forward
2 - 4.33" / 110 mm guns (1x2 guns), 40.59lbs / 18.41kg shells, 1937 Model
Dual purpose guns in a deck mount with hoist
on centreline aft
8 - 1.57" / 40.0 mm guns (4x2 guns), 1.95lbs / 0.89kg shells, 1937 Model
Anti-aircraft guns in deck mounts
on side, all amidships
8 - 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
Weight of broadside 586 lbs / 266 kg
Shells per gun, main battery: 80
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.33" / 110 mm 100.00 ft / 30.48 m 7.00 ft / 2.13 m
Ends: Unarmoured
Main Belt covers 70 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 4.33" / 110 mm 2.95" / 75 mm 4.33" / 110 mm
- Armour deck: 1.18" / 30 mm, Conning tower: 4.33" / 110 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 1,649 shp / 1,230 Kw = 15.00 kts
Range 1,300nm at 15.00 kts
Bunker at max displacement = 92 tons
Complement:
95 - 124
Cost:
£0.561 million / $2.246 million
Distribution of weights at normal displacement:
Armament: 73 tons, 6.7 %
Armour: 329 tons, 29.9 %
- Belts: 145 tons, 13.1 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 63 tons, 5.7 %
- Armour Deck: 112 tons, 10.2 %
- Conning Tower: 10 tons, 0.9 %
Machinery: 46 tons, 4.2 %
Hull, fittings & equipment: 512 tons, 46.5 %
Fuel, ammunition & stores: 100 tons, 9.1 %
Miscellaneous weights: 40 tons, 3.6 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,630 lbs / 739 Kg = 6.7 x 7.9 " / 200 mm shells or 1.0 torpedoes
Stability (Unstable if below 1.00): 1.07
Metacentric height 1.2 ft / 0.4 m
Roll period: 13.5 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.63
Seaboat quality (Average = 1.00): 1.24
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.500
Length to Beam Ratio: 6.29 : 1
'Natural speed' for length: 14.83 kts
Power going to wave formation at top speed: 47 %
Trim (Max stability = 0, Max steadiness = 100): 57
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: 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): 67.3 %
- Above water (accommodation/working, high = better): 72.0 %
Waterplane Area: 5,130 Square feet or 477 Square metres
Displacement factor (Displacement / loading): 105 %
Structure weight / hull surface area: 72 lbs/sq ft or 352 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.91
- Longitudinal: 2.15
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily