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1

Friday, March 12th 2010, 12:14am

Latvian Ships 1939

First up is the rebuild of the ex-Italian Leone class contradestroyers.

-Old Low-Angle 5.12'' guns replaced with new, more modern DP semi-automatic weapons based on the Russian design

-Superstructure rebuilt to allow for higher speeds with no reduced preformance

-Speed increased by 1 knot, to 35.5 knots, with the replacement of the 20 year old engines by newer models

-Torpedo tubes upgraded to the large, Russian 65 cm torpedo tubes

-Magazine space doubled, more ASW weapons and Fire Control is added

Leone, Latvia Contradestroyer laid down 1917 (Engine 1939)

Displacement:
2,393 t light; 2,536 t standard; 2,695 t normal; 2,823 t full load

Dimensions: Length overall / water x beam x draught
405.72 ft / 393.70 ft x 39.70 ft x 15.09 ft (normal load)
123.66 m / 120.00 m x 12.10 m x 4.60 m

Armament:
6 - 5.12" / 130 mm guns (3x2 guns), 67.11lbs / 30.44kg shells, 1940 Model
Automatic rapid fire guns in deck mounts with hoists
on centreline ends, majority aft, 1 raised mount aft - superfiring
2 - 5.12" / 130 mm guns (1x2 guns), 67.11lbs / 30.44kg shells, 1940 Model
Automatic rapid fire guns in a deck mount with hoist
on centreline amidships
4 - 1.46" / 37.1 mm guns (1x4 guns), 0.00lbs / 0.00kg shells, 1939 Model
Anti-aircraft guns in a deck mount with hoist
on centreline forward, all raised guns
8 - 1.46" / 37.1 mm guns (4x2 guns), 1.56lbs / 0.71kg shells, 1939 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread
Weight of broadside 549 lbs / 249 kg
Shells per gun, main battery: 275
4 - 21.7" / 551.18 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.00" / 51 mm 1.50" / 38 mm 5.00" / 127 mm
2nd: 2.00" / 51 mm 1.50" / 38 mm 5.00" / 127 mm
3rd: - - 1.00" / 25 mm

- Conning tower: 2.76" / 70 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 55,000 shp / 41,030 Kw = 35.50 kts
Range 3,000nm at 15.00 kts
Bunker at max displacement = 287 tons

Complement:
186 - 243

Cost:
£0.604 million / $2.416 million

Distribution of weights at normal displacement:
Armament: 83 tons, 3.1 %
Armour: 65 tons, 2.4 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 54 tons, 2.0 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 12 tons, 0.4 %
Machinery: 1,277 tons, 47.4 %
Hull, fittings & equipment: 917 tons, 34.0 %
Fuel, ammunition & stores: 303 tons, 11.2 %
Miscellaneous weights: 50 tons, 1.9 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
753 lbs / 342 Kg = 11.2 x 5.1 " / 130 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 1.7 ft / 0.5 m
Roll period: 12.6 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.63
Seaboat quality (Average = 1.00): 1.01

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.400
Length to Beam Ratio: 9.92 : 1
'Natural speed' for length: 22.97 kts
Power going to wave formation at top speed: 67 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 24.00 ft / 7.32 m
- Forecastle (20 %): 18.00 ft / 5.49 m
- Mid (50 %): 18.00 ft / 5.49 m (17.00 ft / 5.18 m aft of break)
- Quarterdeck (15 %): 17.00 ft / 5.18 m
- Stern: 16.00 ft / 4.88 m
- Average freeboard: 17.91 ft / 5.46 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 179.8 %
- Above water (accommodation/working, high = better): 144.9 %
Waterplane Area: 9,985 Square feet or 928 Square metres
Displacement factor (Displacement / loading): 72 %
Structure weight / hull surface area: 45 lbs/sq ft or 221 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.39
- Overall: 0.58
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent

This post has been edited 1 times, last edit by "TexanCowboy" (May 2nd 2010, 1:59am)


2

Friday, March 12th 2010, 12:49am

You might want to fiddle with the range abit to keep the bunkerage the same as the orriginal design. That way you won't need a 25% refit, only 15%.
*looks at build rules*

Nevermind, your replacing the machinery anyway.

3

Friday, March 12th 2010, 12:51am

??? I'm replacing the engines. That wouldn't do anything...

4

Friday, March 12th 2010, 12:53am

Already edited my post, sorry!

5

Friday, March 12th 2010, 1:03am

:) It's fine, I do the same thing sometimes. :)

6

Friday, March 12th 2010, 12:28pm

Nice bit of work!

Speedy, and a good punch.

7

Friday, March 12th 2010, 6:44pm

I think that realistically you can only go with mounts/hoists for the fore and aft mounts. There are engine rooms and boiler rooms below the other mounts.

Really I think the mounting aft of the conning tower needs to go so you can build up the superstructure to give some extra accommodation spaces and strengthening for a FC director. If you're putting big 650mm torpedo tubes in then there won't be any space left for the midships mounting either.

I think an idea might be removing the aft superstructure and having two mounts there with one superfiring over the other.

8

Saturday, March 13th 2010, 2:17am

RA, you're a genius. It actually worked out better this way.

Leone, Latvia Contradestroyer laid down 1917 (Engine 1939)

Displacement:
2,384 t light; 2,536 t standard; 2,695 t normal; 2,823 t full load

Dimensions: Length overall / water x beam x draught
405.72 ft / 393.70 ft x 39.70 ft x 15.09 ft (normal load)
123.66 m / 120.00 m x 12.10 m x 4.60 m

Armament:
8 - 5.12" / 130 mm guns (4x2 guns), 67.11lbs / 30.44kg shells, 1940 Model
Automatic rapid fire guns in deck mounts with hoists
on centreline ends, evenly spread, 2 raised mounts - superfiring
4 - 1.46" / 37.1 mm guns (1x4 guns), 1.56lbs / 0.71kg shells, 1940 Model
Anti-aircraft guns in a deck mount with hoist
on centreline amidships
12 - 1.46" / 37.1 mm guns (4x3 guns), 1.56lbs / 0.71kg shells, 1939 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
8 - 0.91" / 23.1 mm guns in single mounts, 0.38lbs / 0.17kg shells, 1939 Model
Machine guns in deck mounts
on side, evenly spread, 4 raised mounts
2 - 0.54" / 13.7 mm guns in single mounts, 0.08lbs / 0.04kg shells, 1939 Model
Machine guns in deck mounts
on centreline, evenly spread, all raised mounts
Weight of broadside 565 lbs / 256 kg
Shells per gun, main battery: 300
4 - 25.6" / 650.24 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.00" / 51 mm 1.50" / 38 mm 5.00" / 127 mm
2nd: 1.00" / 25 mm - 1.00" / 25 mm
3rd: 1.00" / 25 mm - -
4th: 1.00" / 25 mm - -
5th: 1.00" / 25 mm - -

- Conning tower: 2.76" / 70 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 55,000 shp / 41,030 Kw = 35.50 kts
Range 3,000nm at 15.00 kts
Bunker at max displacement = 287 tons

Complement:
186 - 243

Cost:
£0.605 million / $2.419 million

Distribution of weights at normal displacement:
Armament: 84 tons, 3.1 %
Armour: 70 tons, 2.6 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 58 tons, 2.2 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 12 tons, 0.4 %
Machinery: 1,275 tons, 47.3 %
Hull, fittings & equipment: 905 tons, 33.6 %
Fuel, ammunition & stores: 311 tons, 11.5 %
Miscellaneous weights: 50 tons, 1.9 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
744 lbs / 338 Kg = 11.1 x 5.1 " / 130 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.18
Metacentric height 1.7 ft / 0.5 m
Roll period: 12.7 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.67
Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.400
Length to Beam Ratio: 9.92 : 1
'Natural speed' for length: 22.97 kts
Power going to wave formation at top speed: 67 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 24.00 ft / 7.32 m
- Forecastle (20 %): 18.00 ft / 5.49 m
- Mid (50 %): 18.00 ft / 5.49 m (17.00 ft / 5.18 m aft of break)
- Quarterdeck (15 %): 17.00 ft / 5.18 m
- Stern: 16.00 ft / 4.88 m
- Average freeboard: 17.91 ft / 5.46 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 180.2 %
- Above water (accommodation/working, high = better): 131.8 %
Waterplane Area: 9,985 Square feet or 928 Square metres
Displacement factor (Displacement / loading): 72 %
Structure weight / hull surface area: 45 lbs/sq ft or 218 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.30
- Overall: 0.58
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent

9

Saturday, March 13th 2010, 4:28pm

Quoted

Originally posted by TexanCowboy
RA, you're a genius. It actually worked out better this way.

Now don't go and swell his head now! Lol, j/k Gavin :P

10

Saturday, March 13th 2010, 5:31pm

I think two mounts forwards would be a bit cramped. You'd have to move the superstructure aft a lot and trunk the forwards funnel. Easier to accept 6x130mm instead, which is still fine given the size of ship.

11

Saturday, March 13th 2010, 7:25pm

It works on the Nuezvarem, and the ship has a lot more small weapons...since it's a recontruction, I could trunk the funnels...

12

Tuesday, March 23rd 2010, 11:29pm

In Q2/1939

The refits on the ex-Italian Leone destroyers will begin. Two will enter and complete their refits in this quarter, with each refit costing 596 tons a pop.

A replacement submarine for the Froze, delieved to Azerbajian in 1938 in exchange for the Khoyski torpedo boats, will be began, with the same name, in the same class.

Several MTB's will be laid down, along with two or three more midget submarines.

13

Tuesday, March 30th 2010, 4:16am

In the design department

This fugly was designed. It features 16 torpedoes in quad mounts, which should be ok, considering the Kyunstils fit 3 in 30 less feet. It also has 6 5'' automatics, and a prototype model of the Unrotated Projector, all on 36 knots.

Enter ship name, Enter country Enter ship type laid down 1939

Displacement:
2,616 t light; 2,754 t standard; 3,091 t normal; 3,361 t full load

Dimensions: Length overall / water x beam x draught
460.00 ft / 460.00 ft x 42.00 ft x 14.00 ft (normal load)
140.21 m / 140.21 m x 12.80 m x 4.27 m

Armament:
6 - 5.12" / 130 mm guns (3x2 guns), 67.11lbs / 30.44kg shells, 1940 Model
Automatic rapid fire guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
4 - 1.46" / 37.1 mm guns (1x4 guns), 1.56lbs / 0.71kg shells, 1939 Model
Anti-aircraft guns in a deck mount with hoist
on side amidships, all raised guns
12 - 1.46" / 37.1 mm guns (6x2 guns), 1.56lbs / 0.71kg shells, 1939 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread
16 - 0.91" / 23.1 mm guns in single mounts, 0.38lbs / 0.17kg shells, 1939 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 434 lbs / 197 kg
Shells per gun, main battery: 300
16 - 25.6" / 650.24 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.00" / 51 mm 2.00" / 51 mm 4.00" / 102 mm
2nd: 1.00" / 25 mm - 1.00" / 25 mm
3rd: 1.00" / 25 mm - 1.00" / 25 mm
4th: 0.50" / 13 mm - -

- Conning tower: 4.00" / 102 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 58,714 shp / 43,801 Kw = 36.00 kts
Range 6,000nm at 15.00 kts
Bunker at max displacement = 606 tons

Complement:
206 - 269

Cost:
£2.033 million / $8.133 million

Distribution of weights at normal displacement:
Armament: 64 tons, 2.1 %
Armour: 70 tons, 2.3 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 52 tons, 1.7 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 18 tons, 0.6 %
Machinery: 1,456 tons, 47.1 %
Hull, fittings & equipment: 906 tons, 29.3 %
Fuel, ammunition & stores: 475 tons, 15.4 %
Miscellaneous weights: 120 tons, 3.9 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
828 lbs / 375 Kg = 12.3 x 5.1 " / 130 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.16
Metacentric height 1.8 ft / 0.6 m
Roll period: 13.1 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.37
Seaboat quality (Average = 1.00): 1.02

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.400
Length to Beam Ratio: 10.95 : 1
'Natural speed' for length: 24.62 kts
Power going to wave formation at top speed: 63 %
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: 35.00 ft / 10.67 m
- Forecastle (20 %): 18.00 ft / 5.49 m
- Mid (50 %): 16.00 ft / 4.88 m
- Quarterdeck (15 %): 12.00 ft / 3.66 m
- Stern: 14.00 ft / 4.27 m
- Average freeboard: 16.91 ft / 5.15 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 173.4 %
- Above water (accommodation/working, high = better): 26.7 %
Waterplane Area: 12,342 Square feet or 1,147 Square metres
Displacement factor (Displacement / loading): 80 %
Structure weight / hull surface area: 41 lbs/sq ft or 199 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.21
- Overall: 0.54
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is extremely poor

Breakdown of Miscellaneous Weights:
- 40 tons for torpedo reloads
- 10 tons for hydrophones/ASDIC
- 10 tons for assorted electronic gear
- 15 tons for depth charges (70x420-lb bombs)
- 10 tons for extra gear for guns
- 10 tons for two Unrotated Projectile launchers
- 25 tons for improved fire control

14

Tuesday, March 30th 2010, 4:34am

RE: In the design department

Quoted

Originally posted by TexanCowboy
a prototype model of the Unrotated Projector

How is Latvia planning to field technology that nobody else in the world has deployed yet?

15

Tuesday, March 30th 2010, 4:37am

It appeared to be a relatively simple device to deploy. I mean, a small rocket moter, much like the Le Prier ones during the Great War. Then you have the parachute, also used during the Great War. It was a relatievly simple device, and it was unsuccessful.

16

Tuesday, March 30th 2010, 5:11am

Quoted

Originally posted by TexanCowboy
And it was unsuccessful.

So why do you feel the need to deploy it operationally?

17

Tuesday, March 30th 2010, 5:20am

Because I'm not using foresight. And in a cramped area such as the Baltic, with swarms of airplanes, it may prove to be effective...

18

Tuesday, March 30th 2010, 5:35am

You're also not using realistic acquisition cycles. URP was rushed into service in Britain, in wartime, by Churchill's orders, and probably didn't get field-tested... at all, likely. Even if Latvia had the ability to manufacture the rockets, peacetime acquisition cycles wouldn't put it aboard a ship until the ordnance boffins made sure the thing worked (as opposed to, say, exploding every third sunny day, or making clown noises any time an aircraft was spotted).

Have you looked to see if URP was ever deployed on a destroyer? Only URP-carrying ship I've ever seen was KGV.

19

Tuesday, March 30th 2010, 5:38am

I don't think it was, but I think it could fit...


It doesn't have to be on there. I can just say it's additional improvements to the AA Fire Control system. I thought it would be a nice touch.

And with what, the +3 rule, it would be in service by now. It's not a balance changer in the Baltic, its just a expensive way to be different.

Other than that, what do you think of the ship.

20

Tuesday, March 30th 2010, 5:44am

Quoted

Originally posted by TexanCowboy
Other than that, what do you think of the ship.

It's a long skinny boat and seems pricy for its capabilities.

Very Shimakaze.