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Monday, March 17th 2008, 11:11pm

New Mexican Ships

License built version of the Filipino Agayaba Minelayers. A single one will be built.



General Ignacio Zaragoza, Mexico Fast Transport laid down 1936

Displacement:
2,440 t light; 2,549 t standard; 2,989 t normal; 3,341 t full load

Dimensions: Length overall / water x beam x draught
450.00 ft / 450.00 ft x 42.00 ft x 13.50 ft (normal load)
137.16 m / 137.16 m x 12.80 m x 4.11 m

Armament:
6 - 5.00" / 127 mm guns (3x2 guns), 62.50lbs / 28.35kg shells, 1936 Model
Breech loading guns in deck mounts
on centreline ends, majority forward, 2 raised mounts - superfiring
12 - 1.85" / 47.0 mm guns (6x2 guns), 3.17lbs / 1.44kg shells, 1936 Model
Breech loading guns in deck mounts
on side, evenly spread, 2 raised mounts
4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1936 Model
Breech loading guns in deck mounts
on side, evenly spread
Weight of broadside 413 lbs / 187 kg
Shells per gun, main battery: 205
10 - 24.0" / 609.6 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Ends: Unarmoured
Upper: 1.00" / 25 mm 90.00 ft / 27.43 m 9.00 ft / 2.74 m

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

- Conning tower: 1.00" / 25 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 37,295 shp / 27,822 Kw = 31.00 kts
Range 7,500nm at 15.00 kts
Bunker at max displacement = 791 tons

Complement:
201 - 262

Cost:
£1.452 million / $5.806 million

Distribution of weights at normal displacement:
Armament: 52 tons, 1.7 %
Armour: 66 tons, 2.2 %
- Belts: 43 tons, 1.4 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 18 tons, 0.6 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 4 tons, 0.1 %
Machinery: 1,046 tons, 35.0 %
Hull, fittings & equipment: 906 tons, 30.3 %
Fuel, ammunition & stores: 549 tons, 18.4 %
Miscellaneous weights: 370 tons, 12.4 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,528 lbs / 693 Kg = 24.4 x 5.0 " / 127 mm shells or 0.6 torpedoes
Stability (Unstable if below 1.00): 1.23
Metacentric height 2.0 ft / 0.6 m
Roll period: 12.5 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.20
Seaboat quality (Average = 1.00): 1.25

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.410
Length to Beam Ratio: 10.71 : 1
'Natural speed' for length: 21.21 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 56
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: 21.00 ft / 6.40 m
- Forecastle (20 %): 20.00 ft / 6.10 m
- Mid (45 %): 20.00 ft / 6.10 m (11.00 ft / 3.35 m aft of break)
- Quarterdeck (15 %): 11.00 ft / 3.35 m
- Stern: 11.00 ft / 3.35 m
- Average freeboard: 15.13 ft / 4.61 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 140.6 %
- Above water (accommodation/working, high = better): 84.0 %
Waterplane Area: 11,705 Square feet or 1,087 Square metres
Displacement factor (Displacement / loading): 102 %
Structure weight / hull surface area: 46 lbs/sq ft or 223 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.66
- Longitudinal: 1.12
- Overall: 0.70
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily


Thoughts?

2

Monday, March 17th 2008, 11:45pm

The drawing does not match the description - there's no angled bow in the description.

Some of the specifications seem to imply her role as a destroyer leader, but you say she's supposed to be a fast transport. Why not ditch some of the torpedo tubes, in that case? Ten is rather high for a transport, even a fighting one.

The 47mm and .50cal guns are AA guns and MGs, riiiiight? :P

3

Wednesday, March 19th 2008, 1:17am

I never bother with bow agles in SS2, it doesnt change anything.

Her role is to be a minelayer, transport, and leader for a minelaying squadron. She doesn`t actually carry torpedoes. The torpedoes are just there to simulate the space required for the boats carried.

The light guns are typos.

Here is the original Filipino ship:
http://wesworld.jk-clan.de/thread.php?threadid=4869&sid=

4

Monday, April 14th 2008, 5:19am

A general purpose patrol craft based on historical Mexican ships of the time period:


10 are to be built for the Coast Guard. In wartime they can be used as ASW launches, anti-MTB escorts, or transports for raiding parties.



G-1, Mexico Patrol Craft laid down 1936

Displacement:
130 t light; 134 t standard; 145 t normal; 154 t full load

Dimensions: Length overall / water x beam x draught
154.02 ft / 150.00 ft x 15.50 ft x 5.20 ft (normal load)
46.95 m / 45.72 m x 4.72 m x 1.58 m

Armament:
1 - 1.85" / 47.0 mm guns in single mounts, 3.17lbs / 1.44kg shells, 1936 Model
Dual purpose gun in deck mount
on centreline forward
4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1936 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 3 lbs / 2 kg
Shells per gun, main battery: 300

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.00" / 25 mm - -

Machinery:
Diesel Internal combustion motors,
Geared drive, 1 shaft, 3,368 shp / 2,512 Kw = 25.00 kts
Range 3,000nm at 10.00 kts
Bunker at max displacement = 20 tons

Complement:
20 - 27

Cost:
£0.078 million / $0.311 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0.3 %
Armour: 1 tons, 0.6 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 1 tons, 0.6 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 70 tons, 48.4 %
Hull, fittings & equipment: 49 tons, 33.7 %
Fuel, ammunition & stores: 15 tons, 10.1 %
Miscellaneous weights: 10 tons, 6.9 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
52 lbs / 24 Kg = 16.4 x 1.9 " / 47 mm shells or 0.1 torpedoes
Stability (Unstable if below 1.00): 1.19
Metacentric height 0.4 ft / 0.1 m
Roll period: 10.0 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.03
Seaboat quality (Average = 1.00): 1.02

Hull form characteristics:
Hull has raised forecastle
and transom stern
Block coefficient: 0.420
Length to Beam Ratio: 9.68 : 1
'Natural speed' for length: 14.16 kts
Power going to wave formation at top speed: 73 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 15.00 ft / 4.57 m
- Forecastle (25 %): 13.00 ft / 3.96 m (7.00 ft / 2.13 m aft of break)
- 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: 8.70 ft / 2.65 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 166.4 %
- Above water (accommodation/working, high = better): 100.3 %
Waterplane Area: 1,505 Square feet or 140 Square metres
Displacement factor (Displacement / loading): 71 %
Structure weight / hull surface area: 13 lbs/sq ft or 65 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.47
- Longitudinal: 4.96
- Overall: 0.59
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate

This post has been edited 1 times, last edit by "Desertfox" (Jan 17th 2011, 7:22am)


HoOmAn

Keeper of the Sacred Block Coefficient

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5

Monday, April 14th 2008, 8:44am

Is this a picture of yours?


6

Monday, April 14th 2008, 5:01pm

No that's a drawing of the actual OTL ships. It's from the website above. I wish I could draw that good. :)