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The CNDO presents a costal Submarine.

Type: WU I (Coastal Submarine)

Displacement: 254 tons surfaced

300 tons dived

dimensions: 40.9 x 4,1 x 3,8 m

crew: 25 Mann

armament: one 20mm canon & 3 533mm Torpedotubs

engine: Diesel- & E-Motors; 2 shafts

range: surfaced 3700 km with 8 kn

speed: 13 kn surfaced / 6,9 kn under water

###############################

China Submarine laid down 1935

Displacement:

248 t light; 254 t standard; 268 t normal; 279 t full load

Dimensions: Length overall / water x beam x draught

134,19 ft / 134,19 ft x 13,45 ft x 11,81 ft (normal load)

40,90 m / 40,90 m x 4,10 m x 3,60 m

Armament:

1 - 0,79" / 20,0 mm guns in single mounts, 0,24lbs / 0,11kg shells, 1935 Model

Dual purpose gun in deck mount

on centreline aft

Weight of broadside 0 lbs / 0 kg

Shells per gun, main battery: 500

3 - 21,0" / 533 mm submerged torpedo tubes

Armour:

- Conning tower: 0,79" / 20 mm

Machinery:

Diesel Internal combustion generators plus batteries,

Electric motors, 2 shafts, 463 shp / 345 Kw = 13,00 kts

Range 3.700nm at 8,00 kts

Bunker at max displacement = 25 tons

Complement:

33 - 43

Cost:

£0,054 million / $0,215 million

Distribution of weights at normal displacement:

Armament: 0 tons, 0,0%

Armour: 1 tons, 0,3%

- Belts: 0 tons, 0,0%

- Torpedo bulkhead: 0 tons, 0,0%

- Armament: 0 tons, 0,0%

- Armour Deck: 0 tons, 0,0%

- Conning Tower: 1 tons, 0,3%

Machinery: 13 tons, 4,9%

Hull, fittings & equipment: 135 tons, 50,2%

Fuel, ammunition & stores: 20 tons, 7,3%

Miscellaneous weights: 100 tons, 37,3%

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship):

9 lbs / 4 Kg = 35,2 x 0,8 " / 20 mm shells or 0,0 torpedoes

Stability (Unstable if below 1.00): 0,69

Metacentric height 0,1 ft / 0,0 m

Roll period: 18,3 seconds

Steadiness - As gun platform (Average = 50 %): 0 %

- Recoil effect (Restricted arc if above 1.00): 0,00

Seaboat quality (Average = 1.00): 0,00

Hull form characteristics:

Hull has a flush deck

Block coefficient: 0,440

Length to Beam Ratio: 9,98 : 1

'Natural speed' for length: 11,58 kts

Power going to wave formation at top speed: 42 %

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: 0,00 ft / 0,00 m

- Forecastle (20%): 0,00 ft / 0,00 m

- Mid (50%): 0,00 ft / 0,00 m

- Quarterdeck (15%): 0,00 ft / 0,00 m

- Stern: 0,00 ft / 0,00 m

- Average freeboard: 0,00 ft / 0,00 m

Ship tends to be wet forward

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 190,4%

- Above water (accommodation/working, high = better): 0,0%

Waterplane Area: 1.142 Square feet or 106 Square metres

Displacement factor (Displacement / loading): 211%

Structure weight / hull surface area: 65 lbs/sq ft or 318 Kg/sq metre

Hull strength (Relative):

- Cross-sectional: 3,04

- Longitudinal: 3,31

- Overall: 3,07

Caution: Poor stability - excessive risk of capsizing

Hull space for machinery, storage, compartmentation is cramped

Room for accommodation and workspaces is extremely poor

Ship has quick, lively roll, not a steady gun platform

Caution: Lacks seaworthiness - very limited seakeeping ability

Type: WU I (Coastal Submarine)

Displacement: 254 tons surfaced

300 tons dived

dimensions: 40.9 x 4,1 x 3,8 m

crew: 25 Mann

armament: one 20mm canon & 3 533mm Torpedotubs

engine: Diesel- & E-Motors; 2 shafts

range: surfaced 3700 km with 8 kn

speed: 13 kn surfaced / 6,9 kn under water

###############################

China Submarine laid down 1935

Displacement:

248 t light; 254 t standard; 268 t normal; 279 t full load

Dimensions: Length overall / water x beam x draught

134,19 ft / 134,19 ft x 13,45 ft x 11,81 ft (normal load)

40,90 m / 40,90 m x 4,10 m x 3,60 m

Armament:

1 - 0,79" / 20,0 mm guns in single mounts, 0,24lbs / 0,11kg shells, 1935 Model

Dual purpose gun in deck mount

on centreline aft

Weight of broadside 0 lbs / 0 kg

Shells per gun, main battery: 500

3 - 21,0" / 533 mm submerged torpedo tubes

Armour:

- Conning tower: 0,79" / 20 mm

Machinery:

Diesel Internal combustion generators plus batteries,

Electric motors, 2 shafts, 463 shp / 345 Kw = 13,00 kts

Range 3.700nm at 8,00 kts

Bunker at max displacement = 25 tons

Complement:

33 - 43

Cost:

£0,054 million / $0,215 million

Distribution of weights at normal displacement:

Armament: 0 tons, 0,0%

Armour: 1 tons, 0,3%

- Belts: 0 tons, 0,0%

- Torpedo bulkhead: 0 tons, 0,0%

- Armament: 0 tons, 0,0%

- Armour Deck: 0 tons, 0,0%

- Conning Tower: 1 tons, 0,3%

Machinery: 13 tons, 4,9%

Hull, fittings & equipment: 135 tons, 50,2%

Fuel, ammunition & stores: 20 tons, 7,3%

Miscellaneous weights: 100 tons, 37,3%

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship):

9 lbs / 4 Kg = 35,2 x 0,8 " / 20 mm shells or 0,0 torpedoes

Stability (Unstable if below 1.00): 0,69

Metacentric height 0,1 ft / 0,0 m

Roll period: 18,3 seconds

Steadiness - As gun platform (Average = 50 %): 0 %

- Recoil effect (Restricted arc if above 1.00): 0,00

Seaboat quality (Average = 1.00): 0,00

Hull form characteristics:

Hull has a flush deck

Block coefficient: 0,440

Length to Beam Ratio: 9,98 : 1

'Natural speed' for length: 11,58 kts

Power going to wave formation at top speed: 42 %

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: 0,00 ft / 0,00 m

- Forecastle (20%): 0,00 ft / 0,00 m

- Mid (50%): 0,00 ft / 0,00 m

- Quarterdeck (15%): 0,00 ft / 0,00 m

- Stern: 0,00 ft / 0,00 m

- Average freeboard: 0,00 ft / 0,00 m

Ship tends to be wet forward

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 190,4%

- Above water (accommodation/working, high = better): 0,0%

Waterplane Area: 1.142 Square feet or 106 Square metres

Displacement factor (Displacement / loading): 211%

Structure weight / hull surface area: 65 lbs/sq ft or 318 Kg/sq metre

Hull strength (Relative):

- Cross-sectional: 3,04

- Longitudinal: 3,31

- Overall: 3,07

Caution: Poor stability - excessive risk of capsizing

Hull space for machinery, storage, compartmentation is cramped

Room for accommodation and workspaces is extremely poor

Ship has quick, lively roll, not a steady gun platform

Caution: Lacks seaworthiness - very limited seakeeping ability

## Quoted

Stability (Unstable if below 1.00): 0,69

Stability must be 1.0 or higherwith the trim set at 50.

You might get there by reducing the misc weight some, and adjusting the hull dimensions.

There are some Russian sub designs of similar size you might want to take a look at, in the Encyclopedia section.

That shows SS:

Type IIc (Costal Sub)

Displacement:

349 t light; 356 t standard; 373 t normal; 387 t full load

Dimensions: Length overall / water x beam x draught

144,36 ft / 144,36 ft x 16,08 ft x 12,80 ft (normal load)

44,00 m / 44,00 m x 4,90 m x 3,90 m

Armament:

2 - 0,79" / 20,0 mm guns (1x2 guns), 0,24lbs / 0,11kg shells, 1935 Model

Dual purpose guns in deck mount

on centreline forward

Weight of broadside 0 lbs / 0 kg

Shells per gun, main battery: 500

3 - 21,0" / 533 mm submerged torpedo tubes

Armour:

- Conning tower: 0,79" / 20 mm

Machinery:

Diesel Internal combustion generators plus batteries,

Electric motors, 2 shafts, 321 shp / 240 Kw = 11,20 kts

Range 3.700nm at 8,00 kts

Bunker at max displacement = 31 tons

Complement:

42 - 55

Cost:

£0,069 million / $0,275 million

Distribution of weights at normal displacement:

Armament: 0 tons, 0,0%

Armour: 1 tons, 0,2%

- Belts: 0 tons, 0,0%

- Torpedo bulkhead: 0 tons, 0,0%

- Armament: 0 tons, 0,0%

- Armour Deck: 0 tons, 0,0%

- Conning Tower: 1 tons, 0,2%

Machinery: 9 tons, 2,4%

Hull, fittings & equipment: 269 tons, 71,9%

Fuel, ammunition & stores: 25 tons, 6,6%

Miscellaneous weights: 70 tons, 18,8%

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship):

288 lbs / 131 Kg = 1.179,1 x 0,8 " / 20 mm shells or 0,5 torpedoes

Stability (Unstable if below 1.00): 1,02

Metacentric height 0,3 ft / 0,1 m

Roll period: 11,6 seconds

Steadiness - As gun platform (Average = 50 %): 0 %

- Recoil effect (Restricted arc if above 1.00): 0,00

Seaboat quality (Average = 1.00): 0,00

Hull form characteristics:

Hull has a flush deck

Block coefficient: 0,440

Length to Beam Ratio: 8,98 : 1

'Natural speed' for length: 12,01 kts

Power going to wave formation at top speed: 34 %

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: 0,00 ft / 0,00 m

- Forecastle (20%): 0,00 ft / 0,00 m

- Mid (50%): 0,00 ft / 0,00 m

- Quarterdeck (15%): 0,00 ft / 0,00 m

- Stern: 0,00 ft / 0,00 m

- Average freeboard: 0,00 ft / 0,00 m

Ship tends to be wet forward

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 65,6%

- Above water (accommodation/working, high = better): 0,0%

Waterplane Area: 1.468 Square feet or 136 Square metres

Displacement factor (Displacement / loading): 417%

Structure weight / hull surface area: 107 lbs/sq ft or 522 Kg/sq metre

Hull strength (Relative):

- Cross-sectional: 4,42

- Longitudinal: 4,80

- Overall: 4,46

Hull space for machinery, storage, compartmentation is excellent

Room for accommodation and workspaces is extremely poor

Ship has quick, lively roll, not a steady gun platform

Caution: Lacks seaworthiness - very limited seakeeping ability

and that's with the subsim.xls:

Date: 1935

Type: Costal

misc wt: 70

Gun cal cam: 2

ElecHP: 300

DieselHP: 700

=> Crew: 22

Length: 44,0

Beam: 4,9

Depth: 3,9

Crush depth: 200

sigma: 670

#TT: 3

mines: 0

Tons Oil: 40

Tons battery: 30

Cruise speed: 11,2

Submerged speed: 4

=> Range: 3711 surfaced

=> Range: 44 submerged

Comments welcome !!

Type IIc (Costal Sub)

Displacement:

349 t light; 356 t standard; 373 t normal; 387 t full load

Dimensions: Length overall / water x beam x draught

144,36 ft / 144,36 ft x 16,08 ft x 12,80 ft (normal load)

44,00 m / 44,00 m x 4,90 m x 3,90 m

Armament:

2 - 0,79" / 20,0 mm guns (1x2 guns), 0,24lbs / 0,11kg shells, 1935 Model

Dual purpose guns in deck mount

on centreline forward

Weight of broadside 0 lbs / 0 kg

Shells per gun, main battery: 500

3 - 21,0" / 533 mm submerged torpedo tubes

Armour:

- Conning tower: 0,79" / 20 mm

Machinery:

Diesel Internal combustion generators plus batteries,

Electric motors, 2 shafts, 321 shp / 240 Kw = 11,20 kts

Range 3.700nm at 8,00 kts

Bunker at max displacement = 31 tons

Complement:

42 - 55

Cost:

£0,069 million / $0,275 million

Distribution of weights at normal displacement:

Armament: 0 tons, 0,0%

Armour: 1 tons, 0,2%

- Belts: 0 tons, 0,0%

- Torpedo bulkhead: 0 tons, 0,0%

- Armament: 0 tons, 0,0%

- Armour Deck: 0 tons, 0,0%

- Conning Tower: 1 tons, 0,2%

Machinery: 9 tons, 2,4%

Hull, fittings & equipment: 269 tons, 71,9%

Fuel, ammunition & stores: 25 tons, 6,6%

Miscellaneous weights: 70 tons, 18,8%

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship):

288 lbs / 131 Kg = 1.179,1 x 0,8 " / 20 mm shells or 0,5 torpedoes

Stability (Unstable if below 1.00): 1,02

Metacentric height 0,3 ft / 0,1 m

Roll period: 11,6 seconds

Steadiness - As gun platform (Average = 50 %): 0 %

- Recoil effect (Restricted arc if above 1.00): 0,00

Seaboat quality (Average = 1.00): 0,00

Hull form characteristics:

Hull has a flush deck

Block coefficient: 0,440

Length to Beam Ratio: 8,98 : 1

'Natural speed' for length: 12,01 kts

Power going to wave formation at top speed: 34 %

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: 0,00 ft / 0,00 m

- Forecastle (20%): 0,00 ft / 0,00 m

- Mid (50%): 0,00 ft / 0,00 m

- Quarterdeck (15%): 0,00 ft / 0,00 m

- Stern: 0,00 ft / 0,00 m

- Average freeboard: 0,00 ft / 0,00 m

Ship tends to be wet forward

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 65,6%

- Above water (accommodation/working, high = better): 0,0%

Waterplane Area: 1.468 Square feet or 136 Square metres

Displacement factor (Displacement / loading): 417%

Structure weight / hull surface area: 107 lbs/sq ft or 522 Kg/sq metre

Hull strength (Relative):

- Cross-sectional: 4,42

- Longitudinal: 4,80

- Overall: 4,46

Hull space for machinery, storage, compartmentation is excellent

Room for accommodation and workspaces is extremely poor

Ship has quick, lively roll, not a steady gun platform

Caution: Lacks seaworthiness - very limited seakeeping ability

and that's with the subsim.xls:

Date: 1935

Type: Costal

misc wt: 70

Gun cal cam: 2

ElecHP: 300

DieselHP: 700

=> Crew: 22

Length: 44,0

Beam: 4,9

Depth: 3,9

Crush depth: 200

sigma: 670

#TT: 3

mines: 0

Tons Oil: 40

Tons battery: 30

Cruise speed: 11,2

Submerged speed: 4

=> Range: 3711 surfaced

=> Range: 44 submerged

Comments welcome !!

Also with subs you'l need the following to calculate its operational dive depths:

## Quoted

Multiply composite hull strength times 100 to

get operational diving depth in feet. (Multiply by

30 for depth in metres.) Emergency diving depth

is 1.6 times operational depth; crush depth is 2.5

times operational depth

When you've calculated the dive depths you can edit your SS file to display them.

Type IIc (Costal Sub) laid down 1935

Displacement:

349 t light; 356 t standard; 373 t normal; 387 t full load

Dimensions: Length overall / water x beam x draught

144,36 ft / 144,36 ft x 16,08 ft x 12,80 ft (normal load)

44,00 m / 44,00 m x 4,90 m x 3,90 m

Armament:

2 - 0,79" / 20,0 mm guns (1x2 guns), 0,24lbs / 0,11kg shells, 1935 Model

Dual purpose guns in deck mount

on centreline forward

Weight of broadside 0 lbs / 0 kg

Shells per gun, main battery: 500

3 - 21,0" / 533 mm submerged torpedo tubes

Armour:

- Conning tower: 0,79" / 20 mm

Machinery:

Diesel Internal combustion generators plus batteries,

Electric motors, 2 shafts, 321 shp / 240 Kw = 11,20 kts

Range 3.700nm at 8,00 kts

Bunker at max displacement = 31 tons

Complement:

21

Cost:

£0,069 million / $0,275 million

Distribution of weights at normal displacement:

Armament: 0 tons, 0,0%

Armour: 1 tons, 0,2%

- Belts: 0 tons, 0,0%

- Torpedo bulkhead: 0 tons, 0,0%

- Armament: 0 tons, 0,0%

- Armour Deck: 0 tons, 0,0%

- Conning Tower: 1 tons, 0,2%

Machinery: 9 tons, 2,4%

Hull, fittings & equipment: 269 tons, 71,9%

Fuel, ammunition & stores: 25 tons, 6,6%

Miscellaneous weights: 70 tons, 18,8%

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship):

288 lbs / 131 Kg = 1.179,1 x 0,8 " / 20 mm shells or 0,5 torpedoes

Stability (Unstable if below 1.00): 1,02

Metacentric height 0,3 ft / 0,1 m

Roll period: 11,6 seconds

Steadiness - As gun platform (Average = 50 %): 0 %

- Recoil effect (Restricted arc if above 1.00): 0,00

Seaboat quality (Average = 1.00): 0,00

Hull form characteristics:

Hull has a flush deck

Block coefficient: 0,440

Length to Beam Ratio: 8,98 : 1

'Natural speed' for length: 12,01 kts

Power going to wave formation at top speed: 34 %

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: 0,00 ft / 0,00 m

- Forecastle (20%): 0,00 ft / 0,00 m

- Mid (50%): 0,00 ft / 0,00 m

- Quarterdeck (15%): 0,00 ft / 0,00 m

- Stern: 0,00 ft / 0,00 m

- Average freeboard: 0,00 ft / 0,00 m

Ship tends to be wet forward

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 65,6%

- Above water (accommodation/working, high = better): 0,0%

Waterplane Area: 1.468 Square feet or 136 Square metres

Displacement factor (Displacement / loading): 417%

Structure weight / hull surface area: 107 lbs/sq ft or 522 Kg/sq metre

Hull strength (Relative):

- Cross-sectional: 4,42

- Longitudinal: 4,80

- Overall: 4,46

operational diving depth = 446 feet or 134m

emergency diving depth = 714 feet or 214m

crush depth = 1115 feet or 335m

Displacement:

349 t light; 356 t standard; 373 t normal; 387 t full load

Dimensions: Length overall / water x beam x draught

144,36 ft / 144,36 ft x 16,08 ft x 12,80 ft (normal load)

44,00 m / 44,00 m x 4,90 m x 3,90 m

Armament:

2 - 0,79" / 20,0 mm guns (1x2 guns), 0,24lbs / 0,11kg shells, 1935 Model

Dual purpose guns in deck mount

on centreline forward

Weight of broadside 0 lbs / 0 kg

Shells per gun, main battery: 500

3 - 21,0" / 533 mm submerged torpedo tubes

Armour:

- Conning tower: 0,79" / 20 mm

Machinery:

Diesel Internal combustion generators plus batteries,

Electric motors, 2 shafts, 321 shp / 240 Kw = 11,20 kts

Range 3.700nm at 8,00 kts

Bunker at max displacement = 31 tons

Complement:

21

Cost:

£0,069 million / $0,275 million

Distribution of weights at normal displacement:

Armament: 0 tons, 0,0%

Armour: 1 tons, 0,2%

- Belts: 0 tons, 0,0%

- Torpedo bulkhead: 0 tons, 0,0%

- Armament: 0 tons, 0,0%

- Armour Deck: 0 tons, 0,0%

- Conning Tower: 1 tons, 0,2%

Machinery: 9 tons, 2,4%

Hull, fittings & equipment: 269 tons, 71,9%

Fuel, ammunition & stores: 25 tons, 6,6%

Miscellaneous weights: 70 tons, 18,8%

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship):

288 lbs / 131 Kg = 1.179,1 x 0,8 " / 20 mm shells or 0,5 torpedoes

Stability (Unstable if below 1.00): 1,02

Metacentric height 0,3 ft / 0,1 m

Roll period: 11,6 seconds

Steadiness - As gun platform (Average = 50 %): 0 %

- Recoil effect (Restricted arc if above 1.00): 0,00

Seaboat quality (Average = 1.00): 0,00

Hull form characteristics:

Hull has a flush deck

Block coefficient: 0,440

Length to Beam Ratio: 8,98 : 1

'Natural speed' for length: 12,01 kts

Power going to wave formation at top speed: 34 %

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: 0,00 ft / 0,00 m

- Forecastle (20%): 0,00 ft / 0,00 m

- Mid (50%): 0,00 ft / 0,00 m

- Quarterdeck (15%): 0,00 ft / 0,00 m

- Stern: 0,00 ft / 0,00 m

- Average freeboard: 0,00 ft / 0,00 m

Ship tends to be wet forward

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 65,6%

- Above water (accommodation/working, high = better): 0,0%

Waterplane Area: 1.468 Square feet or 136 Square metres

Displacement factor (Displacement / loading): 417%

Structure weight / hull surface area: 107 lbs/sq ft or 522 Kg/sq metre

Hull strength (Relative):

- Cross-sectional: 4,42

- Longitudinal: 4,80

- Overall: 4,46

operational diving depth = 446 feet or 134m

emergency diving depth = 714 feet or 214m

crush depth = 1115 feet or 335m

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