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41

Tuesday, November 8th 2011, 11:39pm

Project 1942 Theta - Rev A

Well, I am willing to take discretion on the point of strength for such a small vessel, but this time I think it will pass muster.

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Project 1942 Theta - Rev A - Yugoslav Escort Sloop laid down 1942

Displacement: 620 t light; 665 t standard; 801 t normal; 910 t full load

Dimensions: Length overall / water x beam x draught

237.43 ft / 229.66 ft x 27.07 ft x 9.02 ft (normal load) [72.37 m / 70.00 m x 8.25 m x 2.75 m]

Armament:

2 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1936 Model Anti-aircraft guns in deck mounts on centreline ends, evenly spread
4 - 1.57" / 40.0 mm guns (2x2 guns), 1.95lbs / 0.88kg shells, 1936 Model Anti-aircraft guns in deck mounts on centreline ends, evenly spread, all raised mounts
4 - 0.79" / 20.0 mm guns (2x2 guns), 0.24lbs / 0.11kg shells, 1930 Model Anti-aircraft guns in deck mounts on side, evenly spread
Weight of broadside 79 lbs / 36 kg
Shells per gun, main battery: 600

Armour:

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

Conning tower: 0.79" / 20 mm

Machinery:

Diesel Internal combustion motors, Geared drive, 2 shafts, 5,938 shp / 4,430 Kw = 22.00 kts
Range 5,000nm at 15.00 kts
Bunker at max displacement = 246 tons

Complement: 74 - 97

Cost: £0.329 million / $1.318 million

Distribution of weights at normal displacement:

Armament: 10 tons, 1.2 %
Armour: 6 tons, 0.8 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 5 tons, 0.6 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 1 tons, 0.2 %
Machinery: 155 tons, 19.4 %
Hull, fittings & equipment: 389 tons, 48.6 %
Fuel, ammunition & stores: 181 tons, 22.6 %
Miscellaneous weights: 60 tons, 7.5 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 1,568 lbs / 711 Kg = 44.4 x 4.1 " / 105 mm shells or 0.7 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 1.0 ft / 0.3 m
Roll period: 11.4 seconds
Steadiness - As gun platform (Average = 50 %): 55 %
- Recoil effect (Restricted arc if above 1.00): 0.17
Seaboat quality (Average = 1.00): 1.83

Hull form characteristics:

Hull has rise forward of midbreak
Block coefficient: 0.500
Length to Beam Ratio: 8.48: 1
'Natural speed' for length: 15.15 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 30
Bow angle (Positive = bow angles forward): 18.00 degrees
Stern overhang: 1.64 ft / 0.50 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 18.86 ft / 5.75 m
- Forecastle (20 %): 18.04 ft / 5.50 m
- Mid (45 %): 18.04 ft / 5.50 m (9.84 ft / 3.00 m aft of break)
- Quarterdeck (25 %): 9.84 ft / 3.00 m
- Stern: 9.84 ft / 3.00 m
- Average freeboard: 13.60 ft / 4.15 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 84.1 %
- Above water (accommodation/working, high = better): 144.7 %
Waterplane Area: 4,141 Square feet or 385 Square metres
Displacement factor (Displacement / loading): 176 %
Structure weight / hull surface area: 43 lbs/sq ft or 211 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 6.81
- Overall: 1.13
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Breakdown of miscellaneous weight

30 tons reserved for A/S outfit - ASDIC, four A/S mortars (K-guns), and two racks for twenty-four 100 kg depth charges
15 tons reserved for radar
15 tons reserved for antisubmarine detection equipment

42

Wednesday, November 9th 2011, 3:31am

Project 1942 Kappa Destroyer Leader

Project 1942 Kappa, Yugoslav Destroyer Leader laid down 1942

Displacement: 2,587 t light; 2,753 t standard; 3,280 t normal; 3,702 t full load

Dimensions: Length overall / water x beam x draught

483.34 ft / 465.88 ft x 44.29 ft x 13.91 ft (normal load) [147.32 m / 142.00 m x 13.50 m x 4.24 m]

Armament:

8 - 4.72" / 120 mm guns (4x2 guns), 52.72lbs / 23.92kg shells, 1936 Model Dual purpose guns in deck mounts with hoists on centreline ends, evenly spread, 2 raised mounts – superfiring
8 - 1.57" / 40.0 mm guns (4x2 guns), 1.95lbs / 0.89kg shells, 1936 Model Anti-aircraft guns in deck mounts on side, all amidships, all raised mounts - superfiring
8 - 0.79" / 20.0 mm guns (4x2 guns), 0.24lbs / 0.11kg shells, 1930 Model Anti-aircraft guns in deck mounts on side, evenly spread
Weight of broadside 439 lbs / 199 kg
Shells per gun, main battery: 400
10 - 21.7" / 550 mm above water torpedoes

Armour:

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.59" / 15 mm 0.39" / 10 mm
2nd: 0.59" / 15 mm 0.39" / 10 mm -
3rd: 0.39" / 10 mm - -

Conning tower: 1.97" / 50 mm

Machinery:

Oil fired boilers, steam turbines, Geared drive, 2 shafts, 48,222 shp / 35,973 Kw = 34.00 kts
Range 9,500nm at 15.00 kts
Bunker at max displacement = 949 tons

Complement: 216 - 281

Cost: £1.992 million / $7.968 million

Distribution of weights at normal displacement:

Armament: 55 tons, 1.7 %
Armour: 32 tons, 1.0 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 22 tons, 0.7 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 9 tons, 0.3 %
Machinery: 1,260 tons, 38.4 %
Hull, fittings & equipment: 1,161 tons, 35.4 %
Fuel, ammunition & stores: 693 tons, 21.1 %
Miscellaneous weights: 80 tons, 2.4 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 1,743 lbs / 791 Kg = 33.1 x 4.7 " / 120 mm shells or 0.6 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 2.1 ft / 0.6 m
Roll period: 13.0 seconds
Steadiness - As gun platform (Average = 50 %): 82 %
- Recoil effect (Restricted arc if above 1.00): 0.41
Seaboat quality (Average = 1.00): 1.20

Hull form characteristics:

Hull has rise forward of midbreak and transom stern
Block coefficient: 0.400
Length to Beam Ratio: 10.52: 1
'Natural speed' for length: 24.86 kts
Power going to wave formation at top speed: 60 %
Trim (Max stability = 0, Max steadiness = 100): 68
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 1.64 ft / 0.50 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.40 ft / 8.35 m
- Forecastle (20 %): 20.83 ft / 6.35 m
- Mid (40 %): 20.83 ft / 6.35 m (13.94 ft / 4.25 m aft of break)
- Quarterdeck (15 %): 13.94 ft / 4.25 m
- Stern: 13.94 ft / 4.25 m
- Average freeboard: 17.22 ft / 5.25 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 141.9 %
- Above water (accommodation/working, high = better): 120.4 %
Waterplane Area: 13,182 Square feet or 1,225 Square metres
Displacement factor (Displacement / loading): 107 %
Structure weight / hull surface area: 51 lbs/sq ft or 248 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.63
- Longitudinal: 1.48
- Overall: 0.69
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

Breakdown of Miscellaneous Weight

80 tons reserved for radar and directors - one set forward and one set aft

43

Wednesday, January 4th 2012, 2:25pm

Project 1943 Epsilon Netlayer/Harbour Defence Craft

Project 1943 Epsilon - Rev A, Yugoslav Netlayer/Harbour Defence Craft laid down 1943

Displacement: 199 t light; 206 t standard; 221 t normal; 234 t full load

Dimensions: Length overall / water x beam x draught

133.49 ft / 127.95 ft x 24.61 ft x 4.92 ft (normal load) [40.69 m / 39.00 m x 7.50 m x 1.50 m]

Armament:

2 - 1.57" / 40.0 mm guns in single mounts, 1.95lbs / 0.89kg shells, 1936 Model Anti-aircraft guns in deck mounts on centreline, evenly spread, 1 raised mount
4 - 0.79" / 20.0 mm guns (2x2 guns), 0.24lbs / 0.11kg shells, 1930 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 5 lbs / 2 kg
Shells per gun, main battery: 600

Armour:

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.39" / 10 mm 0.39" / 10 mm -
2nd: 0.39" / 10 mm - -

Machinery:

Diesel Internal combustion motors, Geared drive, 1 shaft, 791 shp / 590 Kw = 15.00 kts
Range 3,000nm at 10.00 kts
Bunker at max displacement = 28 tons

Complement: 28 - 37

Cost: £0.068 million / $0.271 million

Distribution of weights at normal displacement:

Armament: 1 tons, 0.3 %
Armour: 1 tons, 0.4 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 1 tons, 0.4 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 20 tons, 9.2 %
Hull, fittings & equipment: 87 tons, 39.4 %
Fuel, ammunition & stores: 22 tons, 10.0 %
Miscellaneous weights: 90 tons, 40.7 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 417 lbs / 189 Kg = 213.5 x 1.6 " / 40 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 0.7 ft / 0.2 m
Roll period: 12.0 seconds
Steadiness - As gun platform (Average = 50 %): 52 %
- Recoil effect (Restricted arc if above 1.00): 0.01
Seaboat quality (Average = 1.00): 1.26

Hull form characteristics:

Hull has raised quarterdeck
Block coefficient: 0.500
Length to Beam Ratio: 5.20: 1
'Natural speed' for length: 11.31 kts
Power going to wave formation at top speed: 61 %
Trim (Max stability = 0, Max steadiness = 100): 41
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 12.80 ft / 3.90 m
- Forecastle (20 %): 8.20 ft / 2.50 m
- Mid (40 %): 6.56 ft / 2.00 m
- Quarterdeck (25 %): 12.80 ft / 3.90 m (6.56 ft / 2.00 m before break)
- Stern: 12.80 ft / 3.90 m
- Average freeboard: 8.98 ft / 2.74 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 77.7 %
- Above water (accommodation/working, high = better): 94.1 %
Waterplane Area: 2,016 Square feet or 187 Square metres
Displacement factor (Displacement / loading): 162 %
Structure weight / hull surface area: 27 lbs/sq ft or 133 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.91
- Longitudinal: 4.44
- Overall: 1.07
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Good seaboat, rides out heavy weather easily

Breakdown of Miscellaneous Weight:

80 tons for netlaying equipment
10 tons reserved for design growth or war modification

44

Wednesday, January 4th 2012, 3:28pm

Looks like a useful little thing. It's an area that Peru's deficient in, to be sure.

45

Wednesday, January 4th 2012, 3:47pm

I'd put some more 40mm ammo on there, if that was me.

46

Wednesday, January 4th 2012, 5:49pm

Quoted

Originally posted by The Rock Doctor
Looks like a useful little thing. It's an area that Peru's deficient in, to be sure.


Thank you. Yugoslav design licence fees are *very* reasonable. ;)

47

Wednesday, January 4th 2012, 5:50pm

Quoted

Originally posted by Brockpaine
I'd put some more 40mm ammo on there, if that was me.


Good point, revised design to follow.

48

Wednesday, January 4th 2012, 5:51pm

Project 1943 Epsilon - Rev B Netlayer/Harbour Defence Craft

Design revised to incorporate larger magazines

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Project 1943 Epsilon - Rev B, Yugoslav Netlayer/Harbour Defence Craft laid down 1943

Displacement: 194 t light; 206 t standard; 221 t normal; 234 t full load

Dimensions: Length overall / water x beam x draught

133.49 ft / 127.95 ft x 24.61 ft x 4.92 ft (normal load) [40.69 m / 39.00 m x 7.50 m x 1.50 m]

Armament:

2 - 1.57" / 40.0 mm guns in single mounts, 1.95lbs / 0.88kg shells, 1936 Model Anti-aircraft guns in deck mounts on centreline, evenly spread, 1 raised mount
4 - 0.79" / 20.0 mm guns (2x2 guns), 0.24lbs / 0.11kg shells, 1930 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 5 lbs / 2 kg
Shells per gun, main battery: 2,200

Armour:

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.39" / 10 mm 0.39" / 10 mm -
2nd: 0.39" / 10 mm - -

Machinery:

Diesel Internal combustion motors, Geared drive, 1 shaft, 791 shp / 590 Kw = 15.00 kts
Range 3,000nm at 10.00 kts
Bunker at max displacement = 28 tons

Complement: 28 - 37

Cost: £0.066 million / $0.266 million

Distribution of weights at normal displacement:

Armament: 1 tons, 0.3 %
Armour: 1 tons, 0.4 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 1 tons, 0.4 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 20 tons, 9.2 %
Hull, fittings & equipment: 82 tons, 37.0 %
Fuel, ammunition & stores: 27 tons, 12.4 %
Miscellaneous weights: 90 tons, 40.7 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 403 lbs / 183 Kg = 206.2 x 1.6 " / 40 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 0.7 ft / 0.2 m
Roll period: 12.1 seconds
Steadiness - As gun platform (Average = 50 %): 56 %
- Recoil effect (Restricted arc if above 1.00): 0.01
Seaboat quality (Average = 1.00): 1.27

Hull form characteristics:

Hull has raised quarterdeck
Block coefficient: 0.500
Length to Beam Ratio: 5.20: 1
'Natural speed' for length: 11.31 kts
Power going to wave formation at top speed: 61 %
Trim (Max stability = 0, Max steadiness = 100): 44
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 12.80 ft / 3.90 m
- Forecastle (20 %): 8.20 ft / 2.50 m
- Mid (40 %): 6.56 ft / 2.00 m
- Quarterdeck (25 %): 12.80 ft / 3.90 m (6.56 ft / 2.00 m before break)
- Stern: 12.80 ft / 3.90 m
- Average freeboard: 8.98 ft / 2.74 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 80.3 %
- Above water (accommodation/working, high = better): 94.1 %
Waterplane Area: 2,016 Square feet or 187 Square metres
Displacement factor (Displacement / loading): 162 %
Structure weight / hull surface area: 26 lbs/sq ft or 125 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.86
- Longitudinal: 4.17
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Good seaboat, rides out heavy weather easily

Breakdown of Miscellaneous Weight:

80 tons for netlaying equipment
10 tons reserved for design growth or war modification

49

Friday, January 6th 2012, 9:25pm

Nifty, though the AA armament is a bit heavier than OTL netlayers.

50

Friday, July 27th 2012, 3:27am

Project 1944 Omega Small Cruiser

A design being considered as a follow-on to the Project 40 Srbija class flotilla cruisers; much the same dimensions but intended to be constructed in Yugoslav yards.

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Project 1944 Omega, Yugoslav Flotilla Cruiser laid down 1944

Displacement: 4,640 t light; 4,914 t standard; 5,522 t normal; 6,008 t full load

Dimensions: Length overall / water x beam x draught

486.92 ft / 475.72 ft x 45.93 ft x 18.04 ft (normal load) [148.41 m / 145.00 m x 14.00 m x 5.50 m]

Armament:

8 - 5.31" / 135 mm guns (4x2 guns), 75.07lbs / 34.05kg shells, 1944 Model Dual purpose guns in deck mounts with hoists on centreline ends, evenly spread, 2 raised mounts - superfiring
16 - 1.57" / 40.0 mm guns (4x4 guns), 1.95lbs / 0.88kg shells, 1944 Model Anti-aircraft guns in deck mounts on side, all amidships
8 - 0.79" / 20.0 mm guns (4x2 guns), 0.24lbs / 0.11kg shells, 1944 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 634 lbs / 287 kg
Shells per gun, main battery: 450
8 - 21.7" / 550 mm above water torpedoes

Armour:

Belts: Width (max) Length (avg) Height (avg)
Main: 1.97" / 50 mm 393.70 ft / 120.00 m 11.48 ft / 3.50 m
Ends: Unarmoured
Main Belt covers 127 % of normal length

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

Armour deck: 0.98" / 25 mm, Conning tower: 1.97" / 50 mm

Machinery:

Oil fired boilers, steam turbines, Geared drive, 2 shafts, 62,047 shp / 46,287 Kw = 33.00 kts
Range 8,100nm at 15.00 kts
Bunker at max displacement = 1,094 tons

Complement: 319 - 416

Cost: £3.032 million / $12.129 million

Distribution of weights at normal displacement:

Armament: 79 tons, 1.4 %
Armour: 681 tons, 12.3 %
- Belts: 356 tons, 6.5 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 38 tons, 0.7 %
- Armour Deck: 273 tons, 4.9 %
- Conning Tower: 13 tons, 0.2 %
Machinery: 1,584 tons, 28.7 %
Hull, fittings & equipment: 2,196 tons, 39.8 %
Fuel, ammunition & stores: 882 tons, 16.0 %
Miscellaneous weights: 100 tons, 1.8 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 6,206 lbs / 2,815 Kg = 82.7 x 5.3 " / 135 mm shells or 1.0 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 2.2 ft / 0.7 m
Roll period: 13.0 seconds
Steadiness - As gun platform (Average = 50 %): 55 %
- Recoil effect (Restricted arc if above 1.00): 0.40
Seaboat quality (Average = 1.00): 1.17

Hull form characteristics:

Hull has rise forward of midbreak and transom stern
Block coefficient: 0.490
Length to Beam Ratio: 10.36 : 1
'Natural speed' for length: 24.85 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 47
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 1.64 ft / 0.50 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26.25 ft / 8.00 m
- Forecastle (22 %): 23.79 ft / 7.25 m
- Mid (50 %): 21.33 ft / 6.50 m (14.76 ft / 4.50 m aft of break)
- Quarterdeck (15 %): 14.76 ft / 4.50 m
- Stern: 14.76 ft / 4.50 m
- Average freeboard: 19.15 ft / 5.84 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 108.6 %
- Above water (accommodation/working, high = better): 119.5 %
Waterplane Area: 15,002 Square feet or 1,394 Square metres
Displacement factor (Displacement / loading): 120 %
Structure weight / hull surface area: 78 lbs/sq ft or 381 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.91
- Longitudinal: 2.50
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is adequate


Provision for radar/electronics suite - 60 tons
Reserved for future growth - 40 tons

51

Saturday, July 28th 2012, 6:30pm

A very nice likable little cruiser - very similar in some ways to all the little cruisers I've put together over the past few years, such as the Voltas.

52

Saturday, July 28th 2012, 6:44pm

Thank you!

The challenge was designing a combat-worthy vessel that could be built with Yugoslavia's limited infrastructure. The Srbija class was built abroad due to varying constraints, but this vessel should be able to be built at home.

53

Saturday, April 27th 2013, 4:17pm

Project 1944 Epsilon Light Corvette

Project 1944 Epsilon - Rev B, Yugoslav Light Corvette laid down 1944

Displacement: 500 t light; 539 t standard; 585 t normal; 621 t full load

Dimensions: Length overall / water x beam x draught

239.07 ft / 229.66 ft x 24.61 ft x 7.38 ft (normal load) [72.87 m / 70.00 m x 7.50 m x 2.25 m]

Armament:

4 - 2.24" / 57.0 mm guns (2x2 guns), 5.65lbs / 2.56kg shells, 1944 Model Anti-aircraft guns in deck mounts on centreline ends, evenly spread
4 - 0.79" / 20.0 mm guns (2x2 guns), 0.24lbs / 0.11kg shells, 1944 Model Anti-aircraft guns in deck mounts on centreline, all amidships, all raised mounts - superfiring
Weight of broadside 24 lbs / 11 kg
Shells per gun, main battery: 2,000
2 - 21.7" / 550 mm above water torpedoes

Armour:

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.59" / 15 mm -
2nd: 0.39" / 10 mm - -

Conning tower: 0.79" / 20 mm

Machinery:

Diesel Internal combustion motors, Geared drive, 2 shafts, 11,061 shp / 8,251 Kw = 28.00 kts
Range 2,200nm at 15.00 kts
Bunker at max displacement = 82 tons

Complement: 59 - 77

Cost: £0.390 million / $1.558 million

Distribution of weights at normal displacement:

Armament: 3 tons, 0.5 %
Armour: 5 tons, 0.9 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 4 tons, 0.7 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 1 tons, 0.2 %
Machinery: 271 tons, 46.3 %
Hull, fittings & equipment: 201 tons, 34.4 %
Fuel, ammunition & stores: 85 tons, 14.5 %
Miscellaneous weights: 20 tons, 3.4 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 262 lbs / 119 Kg = 46.3 x 2.2 " / 57 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.15
Metacentric height 0.8 ft / 0.2 m
Roll period: 11.6 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.07
Seaboat quality (Average = 1.00): 1.06

Hull form characteristics:

Hull has a flush deck and transom stern
Block coefficient: 0.491
Length to Beam Ratio: 9.33: 1
'Natural speed' for length: 17.41 kts
Power going to wave formation at top speed: 71 %
Trim (Max stability = 0, Max steadiness = 100): 67
Bow angle (Positive = bow angles forward): 18.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 18.86 ft / 5.75 m
- Forecastle (20 %): 18.04 ft / 5.50 m
- Mid (45 %): 9.84 ft / 3.00 m
- Quarterdeck (25 %): 9.84 ft / 3.00 m
- Stern: 9.84 ft / 3.00 m
- Average freeboard: 12.57 ft / 3.83 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 162.0 %
- Above water (accommodation/working, high = better): 108.7 %
Waterplane Area: 3,882 Square feet or 361 Square metres
Displacement factor (Displacement / loading): 95 %
Structure weight / hull surface area: 25 lbs/sq ft or 120 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.56
- Longitudinal: 3.94
- Overall: 0.68
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

Breakdown of miscellaneous weight

10 tons reserved for search radar
10 tons reserved for future growth

54

Friday, May 31st 2013, 1:53am

Project 1944 Epsilon - Rev C

A small change to avoid issues of completion time.

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Project 1944 Epsilon - Rev C Yugoslav Light Corvette laid down 1944

Displacement: 499 t light; 525 t standard; 570 t normal; 606 t full load

Dimensions: Length overall / water x beam x draught

239.07 ft / 229.66 ft x 24.61 ft x 7.38 ft (normal load) [72.87 m / 70.00 m x 7.50 m x 2.25 m]

Armament:

2 - 2.24" / 57.0 mm guns in single mounts, 5.65lbs / 2.56kg shells, 1944 Model Anti-aircraft guns in deck mounts on centreline ends, evenly spread
4 - 0.79" / 20.0 mm guns (2x2 guns), 0.24lbs / 0.11kg shells, 1944 Model Anti-aircraft guns in deck mounts on side, all amidships, all raised mounts - superfiring
Weight of broadside 12 lbs / 6 kg
Shells per gun, main battery: 2,000
2 - 21.7" / 550 mm above water torpedoes

Armour:

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.59" / 15 mm -
2nd: 0.39" / 10 mm - -

Conning tower: 0.79" / 20 mm

Machinery: Diesel Internal combustion motors, Geared drive, 2 shafts, 10,775 shp / 8,038 Kw = 28.00 kts
Range 2,200nm at 15.00 kts
Bunker at max displacement = 80 tons

Complement: 57 - 75

Cost: £0.379 million / $1.516 million

Distribution of weights at normal displacement:


Armament: 2 tons, 0.3 %
Armour: 4 tons, 0.6 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 2 tons, 0.4 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 1 tons, 0.2 %
Machinery: 268 tons, 47.1 %
Hull, fittings & equipment: 205 tons, 36.0 %
Fuel, ammunition & stores: 71 tons, 12.5 %
Miscellaneous weights: 20 tons, 3.5 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 264 lbs / 120 Kg = 46.7 x 2.2 " / 57 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 0.7 ft / 0.2 m
Roll period: 12.0 seconds
Steadiness - As gun platform (Average = 50 %): 76 %
- Recoil effect (Restricted arc if above 1.00): 0.04
Seaboat quality (Average = 1.00): 1.11

Hull form characteristics:

Hull has a flush deck and transom stern
Block coefficient: 0.478
Length to Beam Ratio: 9.33: 1
'Natural speed' for length: 17.44 kts
Power going to wave formation at top speed: 71 %
Trim (Max stability = 0, Max steadiness = 100): 68
Bow angle (Positive = bow angles forward): 18.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 18.86 ft / 5.75 m
- Forecastle (20 %): 18.04 ft / 5.50 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: 12.78 ft / 3.90 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 160.8 %
- Above water (accommodation/working, high = better): 111.5 %
Waterplane Area: 3,838 Square feet or 357 Square metres
Displacement factor (Displacement / loading): 97 %
Structure weight / hull surface area: 25 lbs/sq ft or 121 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.57
- Longitudinal: 4.32
- Overall: 0.70
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

Breakdown of Miscellaneous Weight

10 tons reserved for search radar
10 tons reserved for future growth