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21

Saturday, December 19th 2009, 2:12am

Made into 15 triple mounts.

Suburb, Latvia Destroyer laid down 1938

Displacement:
2,167 t light; 2,262 t standard; 2,541 t normal; 2,765 t full load

Dimensions: Length overall / water x beam x draught
415.00 ft / 415.00 ft x 38.00 ft x 12.00 ft (normal load)
126.49 m / 126.49 m x 11.58 m x 3.66 m

Armament:
6 - 5.12" / 130 mm guns (3x2 guns), 67.11lbs / 30.44kg shells, 1938 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
36 - 1.46" / 37.1 mm guns (12x3 guns), 1.56lbs / 0.71kg shells, 1938 Model
Anti-aircraft guns in deck mounts
on side, all amidships
9 - 1.46" / 37.1 mm guns (3x3 guns), 1.56lbs / 0.71kg shells, 1938 Model
Breech loading guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 473 lbs / 214 kg
Shells per gun, main battery: 150
8 - 25.6" / 649.986 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.00" / 51 mm 1.00" / 25 mm 1.00" / 25 mm
2nd: 0.50" / 13 mm - -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 51,000 shp / 38,046 Kw = 35.00 kts
Range 6,500nm at 14.00 kts
Bunker at max displacement = 503 tons

Complement:
178 - 232

Cost:
£1.667 million / $6.667 million

Distribution of weights at normal displacement:
Armament: 59 tons, 2.3 %
Armour: 32 tons, 1.3 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 32 tons, 1.3 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 1,216 tons, 47.8 %
Hull, fittings & equipment: 790 tons, 31.1 %
Fuel, ammunition & stores: 374 tons, 14.7 %
Miscellaneous weights: 70 tons, 2.8 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
787 lbs / 357 Kg = 11.7 x 5.1 " / 130 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.33
Metacentric height 1.9 ft / 0.6 m
Roll period: 11.4 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.50
Seaboat quality (Average = 1.00): 1.01

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.470
Length to Beam Ratio: 10.92 : 1
'Natural speed' for length: 23.17 kts
Power going to wave formation at top speed: 66 %
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: 22.00 ft / 6.71 m
- Forecastle (20 %): 17.00 ft / 5.18 m
- Mid (50 %): 16.00 ft / 4.88 m
- Quarterdeck (15 %): 16.00 ft / 4.88 m
- Stern: 17.00 ft / 5.18 m
- Average freeboard: 16.83 ft / 5.13 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 175.4 %
- Above water (accommodation/working, high = better): 88.8 %
Waterplane Area: 10,631 Square feet or 988 Square metres
Displacement factor (Displacement / loading): 75 %
Structure weight / hull surface area: 39 lbs/sq ft or 192 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.60
- Overall: 0.56
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped

22

Saturday, December 19th 2009, 2:13am

I'm reluctant to go to a quad mount because either way if I stack them or twin them, the mount will get bigger. That said if deck space becomes an issue, which it soon will, this option will be more appealing.

23

Saturday, December 19th 2009, 2:22am

Triples? I have 3 mounted on the turret tops, 6 in the superstructure, and 6 on the deck.

24

Saturday, December 19th 2009, 2:22am

I'm a bit skeptical on how you're going to fit all 15 mounts like that... or is it just me?

But I think that I'm sure that you're not able to place 37mm triples on top of the 130mm guns.

This post has been edited 1 times, last edit by "gaiasabre11" (Dec 19th 2009, 2:24am)


25

Saturday, December 19th 2009, 2:25am

Quoted

Originally posted by gaiasabre11
But I think that I'm sure that you're not able to place 37mm triples on top of the 130mm guns.

Very decidedly not.

26

Saturday, December 19th 2009, 3:48am

That rule of thumb really only works, though, with manually loaded guns, because of interference between the loaders.


Anyway, the problem with a flat octuple mounting is how do you reload the middle guns? In the quad 40mm Bofors, the lefthand two guns could be reloaded from the left, over the breeches, and the righthand two guns were reloaded from the right. You don't want to have to stand behind the recoiling guns, that won't work.

27

Saturday, December 19th 2009, 3:52am

A different problem here is that the 130mm will have a fairly decent rate of fire (15 rpm or more). So you have ammunition for 10 minutes or less of fire at max rate, and that includes star shells. Not good. I'd at least double the ammunition for the 130mms.

28

Saturday, December 19th 2009, 4:06am

Quoted

Originally posted by Hrolf Hakonson
A different problem here is that the 130mm will have a fairly decent rate of fire (15 rpm or more). So you have ammunition for 10 minutes or less of fire at max rate, and that includes star shells. Not good. I'd at least double the ammunition for the 130mms.

Yes, I forgot to mention that.

For rationale, see the after-action reports from the Irish Pirate Incident from early 1937. The DD Connacht, with Atlantean 130mm guns very similar to the 130mm guns of Russia, fired off all of her onboard AP and HE and was down to shooting practice rounds at the armed merchant cruiser when help arrived. The Irish concluded that 200 rounds per gun was insufficient and future ships should carry no fewer than 250 rounds per gun for destroyer main battery. They decided this so decisively that they downgunned the next three destroyers in that class from 130mm to 4.5" in order to get more ammo aboard (though also to bring them to par with British DD calibers).

29

Saturday, December 19th 2009, 4:56am

Increased the gun shells from 150 to 350.

Suburb, Latvia Destroyer laid down 1938

Displacement:
2,261 t light; 2,417 t standard; 2,708 t normal; 2,940 t full load

Dimensions: Length overall / water x beam x draught
419.00 ft / 419.00 ft x 38.00 ft x 12.40 ft (normal load)
127.71 m / 127.71 m x 11.58 m x 3.78 m

Armament:
6 - 5.12" / 130 mm guns (3x2 guns), 67.11lbs / 30.44kg shells, 1938 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
36 - 1.46" / 37.1 mm guns (12x3 guns), 1.56lbs / 0.71kg shells, 1938 Model
Anti-aircraft guns in deck mounts
on side, all amidships, 6 raised mounts - superfiring
9 - 1.46" / 37.1 mm guns (3x3 guns), 1.56lbs / 0.71kg shells, 1938 Model
Breech loading guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 473 lbs / 214 kg
Shells per gun, main battery: 350
8 - 25.6" / 649.986 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.00" / 51 mm 1.00" / 25 mm 1.00" / 25 mm
2nd: 0.50" / 13 mm - -
3rd: 0.50" / 13 mm - -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 53,140 shp / 39,642 Kw = 35.00 kts
Range 6,500nm at 14.00 kts
Bunker at max displacement = 524 tons

Complement:
186 - 243

Cost:
£1.748 million / $6.993 million

Distribution of weights at normal displacement:
Armament: 59 tons, 2.2 %
Armour: 34 tons, 1.3 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 34 tons, 1.3 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 1,296 tons, 47.9 %
Hull, fittings & equipment: 802 tons, 29.6 %
Fuel, ammunition & stores: 446 tons, 16.5 %
Miscellaneous weights: 70 tons, 2.6 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
809 lbs / 367 Kg = 12.1 x 5.1 " / 130 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.36
Metacentric height 2.0 ft / 0.6 m
Roll period: 11.3 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.48
Seaboat quality (Average = 1.00): 1.01

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.480
Length to Beam Ratio: 11.03 : 1
'Natural speed' for length: 23.24 kts
Power going to wave formation at top speed: 66 %
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: 22.00 ft / 6.71 m
- Forecastle (20 %): 17.00 ft / 5.18 m
- Mid (50 %): 16.00 ft / 4.88 m
- Quarterdeck (15 %): 16.00 ft / 4.88 m
- Stern: 17.00 ft / 5.18 m
- Average freeboard: 16.83 ft / 5.13 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 176.4 %
- Above water (accommodation/working, high = better): 87.5 %
Waterplane Area: 10,831 Square feet or 1,006 Square metres
Displacement factor (Displacement / loading): 78 %
Structure weight / hull surface area: 39 lbs/sq ft or 191 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.54
- Overall: 0.56
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped

30

Saturday, December 19th 2009, 5:09am

Length to beam ratio's too high now.

31

Saturday, December 19th 2009, 5:26am

Fixed.

Suburb, Latvia Destroyer laid down 1938

Displacement:
2,268 t light; 2,423 t standard; 2,715 t normal; 2,948 t full load

Dimensions: Length overall / water x beam x draught
419.00 ft / 419.00 ft x 38.10 ft x 12.40 ft (normal load)
127.71 m / 127.71 m x 11.61 m x 3.78 m

Armament:
6 - 5.12" / 130 mm guns (3x2 guns), 67.11lbs / 30.44kg shells, 1938 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
36 - 1.46" / 37.1 mm guns (12x3 guns), 1.56lbs / 0.71kg shells, 1938 Model
Anti-aircraft guns in deck mounts
on side, all amidships, 6 raised mounts - superfiring
9 - 1.46" / 37.1 mm guns (3x3 guns), 1.56lbs / 0.71kg shells, 1938 Model
Breech loading guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 473 lbs / 214 kg
Shells per gun, main battery: 350
8 - 25.6" / 649.986 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.00" / 51 mm 1.00" / 25 mm 1.00" / 25 mm
2nd: 0.50" / 13 mm - -
3rd: 0.50" / 13 mm - -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 53,237 shp / 39,715 Kw = 35.00 kts
Range 6,500nm at 14.00 kts
Bunker at max displacement = 524 tons

Complement:
187 - 244

Cost:
£1.752 million / $7.009 million

Distribution of weights at normal displacement:
Armament: 59 tons, 2.2 %
Armour: 34 tons, 1.3 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 34 tons, 1.3 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 1,299 tons, 47.9 %
Hull, fittings & equipment: 805 tons, 29.7 %
Fuel, ammunition & stores: 447 tons, 16.5 %
Miscellaneous weights: 70 tons, 2.6 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
814 lbs / 369 Kg = 12.1 x 5.1 " / 130 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.36
Metacentric height 2.0 ft / 0.6 m
Roll period: 11.3 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.47
Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.480
Length to Beam Ratio: 11.00 : 1
'Natural speed' for length: 23.24 kts
Power going to wave formation at top speed: 66 %
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: 22.00 ft / 6.71 m
- Forecastle (20 %): 17.00 ft / 5.18 m
- Mid (50 %): 16.00 ft / 4.88 m
- Quarterdeck (15 %): 16.00 ft / 4.88 m
- Stern: 17.00 ft / 5.18 m
- Average freeboard: 16.83 ft / 5.13 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 176.4 %
- Above water (accommodation/working, high = better): 87.5 %
Waterplane Area: 10,859 Square feet or 1,009 Square metres
Displacement factor (Displacement / loading): 78 %
Structure weight / hull surface area: 39 lbs/sq ft or 191 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.53
- Overall: 0.56
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped

Kaiser Kirk

Lightbringer and former European Imperialist

  • Send private message

32

Saturday, December 19th 2009, 9:13am

Hmm I'm not a big fan of asking folks to draw things to resolve deckspace questions, for one thing, I don't draw ships worth a darn.

However the 15 triple mounts others had issues with, I do as well.
Taking a comparable OTL vessel - The USN Gearing Class.
Slightly wider and a couple meters shorter, so very much the same area. Two sets of Torps (10)- and 6 x 5" so the same main guns.

11 deck spots for single 20mm- which are just pedestal mounts and fairly easy to fit.

But a 37mm is more of the size of a 40mm, not 20. Especially if you're talking a triple.
So...the Gearings had:

12 x 40mm in a 2x2, 2x4 arrangement. 4 deck spots one might conceivably put a T3 37mm in.

Later they wanted to add a quad 40mm...they didn't replace 20mms with them, they removed one of the Torp sets to make room.

So...I find it unlikely that your vessel can fit 15 triple 37mm mounts in the useable space. I'll buy 4 triple 37mm just fine. :)

33

Saturday, December 19th 2009, 4:19pm

How's this? The additional 40 feet gives me room for 24 37 millimeter guns, and half have been replaced with 30 23 millimeter guns.

Suburb, Latvia Destroyer laid down 1938

Displacement:
2,247 t light; 2,396 t standard; 2,687 t normal; 2,919 t full load

Dimensions: Length overall / water x beam x draught
430.00 ft / 430.00 ft x 39.10 ft x 11.90 ft (normal load)
131.06 m / 131.06 m x 11.92 m x 3.63 m

Armament:
6 - 5.12" / 130 mm guns (3x2 guns), 67.11lbs / 30.44kg shells, 1938 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
24 - 1.46" / 37.1 mm guns (12x2 guns), 1.56lbs / 0.71kg shells, 1938 Model
Anti-aircraft guns in deck mounts
on side, all amidships, 6 raised mounts - superfiring
30 - 0.91" / 23.1 mm guns (15x2 guns), 0.38lbs / 0.17kg shells, 1938 Model
Machine guns in deck mounts
on side, evenly spread, 5 raised mounts
Weight of broadside 451 lbs / 205 kg
Shells per gun, main battery: 350
8 - 25.6" / 649.986 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.00" / 51 mm 1.00" / 25 mm 1.00" / 25 mm
2nd: 0.50" / 13 mm - -
3rd: 0.50" / 13 mm - -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 51,930 shp / 38,740 Kw = 35.00 kts
Range 6,500nm at 14.00 kts
Bunker at max displacement = 523 tons

Complement:
186 - 242

Cost:
£1.717 million / $6.867 million

Distribution of weights at normal displacement:
Armament: 56 tons, 2.1 %
Armour: 33 tons, 1.2 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 33 tons, 1.2 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 1,275 tons, 47.5 %
Hull, fittings & equipment: 812 tons, 30.2 %
Fuel, ammunition & stores: 439 tons, 16.4 %
Miscellaneous weights: 70 tons, 2.6 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
848 lbs / 385 Kg = 12.6 x 5.1 " / 130 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.38
Metacentric height 2.2 ft / 0.7 m
Roll period: 11.2 seconds
Steadiness - As gun platform (Average = 50 %): 52 %
- Recoil effect (Restricted arc if above 1.00): 0.42
Seaboat quality (Average = 1.00): 1.03

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.470
Length to Beam Ratio: 11.00 : 1
'Natural speed' for length: 23.58 kts
Power going to wave formation at top speed: 65 %
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: 22.00 ft / 6.71 m
- Forecastle (20 %): 17.00 ft / 5.18 m
- Mid (50 %): 16.00 ft / 4.88 m
- Quarterdeck (15 %): 16.00 ft / 4.88 m
- Stern: 17.00 ft / 5.18 m
- Average freeboard: 16.83 ft / 5.13 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 174.5 %
- Above water (accommodation/working, high = better): 96.7 %
Waterplane Area: 11,335 Square feet or 1,053 Square metres
Displacement factor (Displacement / loading): 79 %
Structure weight / hull surface area: 39 lbs/sq ft or 191 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.40
- Overall: 0.55
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate

34

Saturday, December 19th 2009, 4:29pm

You'll need a Russian yard to build her.

Latvia has only Class 1 slips (120m)

We could work it out.

35

Saturday, December 19th 2009, 4:32pm

That was a typo on your part. Within Latvian Information, you posted that I had a type 2 drydock.

This post has been edited 1 times, last edit by "TexanCowboy" (Dec 19th 2009, 4:32pm)


36

Saturday, December 19th 2009, 4:35pm

Wow, you're right!

Clueless me, lol!

37

Saturday, December 19th 2009, 4:35pm

So, yes, I can build this one, but only one. That's the bad part.

38

Saturday, December 19th 2009, 4:35pm

Am a tad confused here. We're suggesting there are too many guns on that size of ship, and so you...

...add more? ?(

I think the flak load-out is ahistorically powerful, and should be heavily reduced. Compare this against the Chilean Esmeralda which will be laid down in 1939, and the Bulgarian contradestroyers which inspired them. In the case of both classes, they have a heavy flak battery of 12x40mm (6x2). And the Chileans have the benefit of experience from two recent wars to draw from (and second-hand information from a third).

39

Saturday, December 19th 2009, 4:38pm

So, yes, I can build this one, but only one. That's the bad part.

New version, based on what Brockpaine said. The secondary AA was reduced to 4 guns. The other is kept constant.

Suburb, Latvia Destroyer laid down 1938

Displacement:
2,251 t light; 2,396 t standard; 2,687 t normal; 2,919 t full load

Dimensions: Length overall / water x beam x draught
430.00 ft / 430.00 ft x 39.10 ft x 11.90 ft (normal load)
131.06 m / 131.06 m x 11.92 m x 3.63 m

Armament:
6 - 5.12" / 130 mm guns (3x2 guns), 67.11lbs / 30.44kg shells, 1938 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
24 - 1.46" / 37.1 mm guns (12x2 guns), 1.56lbs / 0.71kg shells, 1938 Model
Anti-aircraft guns in deck mounts
on side, all amidships, 6 raised mounts - superfiring
4 - 0.91" / 23.1 mm guns in single mounts, 0.38lbs / 0.17kg shells, 1938 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 442 lbs / 200 kg
Shells per gun, main battery: 350
8 - 25.6" / 649.986 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.00" / 51 mm 1.00" / 25 mm 1.00" / 25 mm
2nd: 0.50" / 13 mm - -
3rd: 0.50" / 13 mm - -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 51,930 shp / 38,740 Kw = 35.00 kts
Range 6,500nm at 14.00 kts
Bunker at max displacement = 523 tons

Complement:
186 - 242

Cost:
£1.713 million / $6.854 million

Distribution of weights at normal displacement:
Armament: 55 tons, 2.1 %
Armour: 32 tons, 1.2 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 32 tons, 1.2 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 1,277 tons, 47.5 %
Hull, fittings & equipment: 817 tons, 30.4 %
Fuel, ammunition & stores: 435 tons, 16.2 %
Miscellaneous weights: 70 tons, 2.6 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
855 lbs / 388 Kg = 12.7 x 5.1 " / 130 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.38
Metacentric height 2.1 ft / 0.7 m
Roll period: 11.2 seconds
Steadiness - As gun platform (Average = 50 %): 52 %
- Recoil effect (Restricted arc if above 1.00): 0.42
Seaboat quality (Average = 1.00): 1.03

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.470
Length to Beam Ratio: 11.00 : 1
'Natural speed' for length: 23.58 kts
Power going to wave formation at top speed: 65 %
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: 22.00 ft / 6.71 m
- Forecastle (20 %): 17.00 ft / 5.18 m
- Mid (50 %): 16.00 ft / 4.88 m
- Quarterdeck (15 %): 16.00 ft / 4.88 m
- Stern: 17.00 ft / 5.18 m
- Average freeboard: 16.83 ft / 5.13 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 174.2 %
- Above water (accommodation/working, high = better): 96.7 %
Waterplane Area: 11,335 Square feet or 1,053 Square metres
Displacement factor (Displacement / loading): 79 %
Structure weight / hull surface area: 39 lbs/sq ft or 192 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.40
- Overall: 0.56
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate

8t- 24 depth charges

This post has been edited 1 times, last edit by "TexanCowboy" (Dec 27th 2009, 10:13pm)


40

Saturday, January 16th 2010, 12:32am

The people at Lipagas Submarine's proposed this submarine to act as A. A coast defense unit to defend the local area of the coast of Latvia, as a last ditch patrol unit, B. A unit to act in support of a raid on a harbor, if that ever becomes nessasary, and C. To act as training submarines to train personnel before going onto one of the 300 ton boats.

OOC: I tried to do this submarine in SS3. The void misc. weight area acts perfectly as a ballast tank. The .5 tons of deck weight are there to act as the single deck mounted 23 mm gun and 1,000 rounds, as SS3 has some serious problems with accepting guns with no freeboard (voided the design).

Crew: The crew is made up of 3 men. 1 is the commander of the boat. He handle's the communications equippment and gives orders to the rest of the crew, and handles the periscope's submerged. On the surface, he handle's the torpedoes as well if nessasary. One is the weapons operator. He fires the torpedoes while submurged, and handle's the gun's on the surface. He also handle's the engine while not at battlestations. One is the navigator. He handles the navigation gear, and the communications gear if the commander is with the torpedoes. He can also handle the engines if nessasary through a series of switch's on the dashboard connecting to the engine.

Baltica, Latvian Minisub laid down 1938

Displacement:
25 t light; 28 t standard; 32 t normal; 35 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(42.45 ft / 42.45 ft) x 8.00 ft x (6.00 / 6.45 ft)
(12.94 m / 12.94 m) x 2.44 m x (1.83 / 1.97 m)

Armament:
2 - 21.0" / 533 mm, 2.000 ft / 4.57 m torpedoes - 1.700 t each, 3.400 t total
In 2 sets of submerged bow tubes

Machinery:
Petrol Internal combustion generators plus batteries,
Electric motors, 1 shaft, 356 shp / 266 Kw = 14.00 kts
Range 1,450nm at 10.00 kts
Bunker at max displacement = 7 tons

Complement:
6 - 8

Cost:
£0.013 million / $0.051 million

Distribution of weights at normal displacement:
Armament: 2 tons, 6.7 %
- Torpedoes: 2 tons, 6.7 %
Machinery: 10 tons, 30.5 %
Hull, fittings & equipment: 7 tons, 22.1 %
Fuel, ammunition & stores: 7 tons, 20.4 %
Miscellaneous weights: 7 tons, 20.3 %
- Hull void weights: 6 tons
- On freeboard deck: 1 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
-10 lbs / -5 Kg = -0.1 x 6 " / 152 mm shells or NaN torpedoes
Stability (Unstable if below 1.00): 1.26
Metacentric height 0.2 ft / 0.1 m
Roll period: 8.1 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,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.550 / 0.559
Length to Beam Ratio: 5.31 : 1
'Natural speed' for length: 6.52 kts
Power going to wave formation at top speed: 83 %
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 (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 0.00 ft / 0.00 m, 0.00 ft / 0.00 m
- Forward deck: 30.00 %, 0.00 ft / 0.00 m, 0.00 ft / 0.00 m
- Aft deck: 35.00 %, 0.00 ft / 0.00 m, 0.00 ft / 0.00 m
- Quarter deck: 15.00 %, 0.00 ft / 0.00 m, 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): -180.7 %
- Above water (accommodation/working, high = better): 0.0 %
Waterplane Area: 230 Square feet or 21 Square metres
Displacement factor (Displacement / loading): 123 %
Structure weight / hull surface area: 19 lbs/sq ft or 91 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.46
- Longitudinal: 3.76
- Overall: 1.60
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

.5t deck weight: 1 single 23 mm gun and 1,000 rounds of ammo.

This post has been edited 2 times, last edit by "TexanCowboy" (Feb 6th 2010, 2:14am)