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1

Friday, July 22nd 2005, 4:26am

Australian Multi Purpose Ship 1928

First of the Unlimited Ships, each ship can do multiple jobs. 4" can be replaced by 4.7"

Roles:
Minesweeper
Minelayer
Seaplane Carrier
Escort
Flagship
Supply Ship for Certain Ships TBD

HMAS Osprey, Australia Multi Purpose Ship laid down 1928

Displacement:
833 t light; 856 t standard; 1,036 t normal; 1,179 t full load

Dimensions: Length overall / water x beam x draught
250.00 ft / 250.00 ft x 29.00 ft x 10.00 ft (normal load)
76.20 m / 76.20 m x 8.84 m x 3.05 m

Armament:
1 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1929 Model
Breech loading gun in deck mount
on centreline forward
2 - 1.57" / 40.0 mm guns (1x2 guns), 1.95lbs / 0.88kg shells, 1929 Model
Breech loading guns in deck mount
on centreline amidships, all raised guns - superfiring
4 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1929 Model
Breech loading guns in deck mounts
on side, evenly spread
Weight of broadside 37 lbs / 17 kg
Shells per gun, main battery: 90

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.20" / 30 mm - -

Machinery:
Diesel Internal combustion motors,
Geared drive, 4 shafts, 9,598 shp / 7,160 Kw = 24.00 kts
Range 9,000nm at 12.00 kts
Bunker at max displacement = 323 tons

Complement:
90 - 118

Cost:
£0.297 million / $1.189 million

Distribution of weights at normal displacement:
Armament: 5 tons, 0.4 %
Armour: 3 tons, 0.2 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 3 tons, 0.2 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 295 tons, 28.5 %
Hull, fittings & equipment: 386 tons, 37.3 %
Fuel, ammunition & stores: 202 tons, 19.5 %
Miscellaneous weights: 145 tons, 14.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,185 lbs / 537 Kg = 37.0 x 4.0 " / 102 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.09
Metacentric height 0.9 ft / 0.3 m
Roll period: 12.7 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.07
Seaboat quality (Average = 1.00): 1.27

Hull form characteristics:
Hull has low quarterdeck
Block coefficient: 0.500
Length to Beam Ratio: 8.62 : 1
'Natural speed' for length: 15.81 kts
Power going to wave formation at top speed: 64 %
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: 17.00 ft / 5.18 m
- Forecastle (20 %): 12.90 ft / 3.93 m
- Mid (50 %): 12.90 ft / 3.93 m
- Quarterdeck (15 %): 9.00 ft / 2.74 m (12.90 ft / 3.93 m before break)
- Stern: 9.00 ft / 2.74 m
- Average freeboard: 12.64 ft / 3.85 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 111.1 %
- Above water (accommodation/working, high = better): 131.9 %
Waterplane Area: 4,830 Square feet or 449 Square metres
Displacement factor (Displacement / loading): 134 %
Structure weight / hull surface area: 41 lbs/sq ft or 202 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.86
- Longitudinal: 3.55
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

2

Friday, July 22nd 2005, 4:27am

Destroyer Escort using same hull.

Enter ship name, Australia Destroyer Escort laid down 1928

Displacement:
766 t light; 804 t standard; 1,036 t normal; 1,221 t full load

Dimensions: Length overall / water x beam x draught
250.00 ft / 250.00 ft x 29.00 ft x 10.00 ft (normal load)
76.20 m / 76.20 m x 8.84 m x 3.05 m

Armament:
3 - 4.70" / 119 mm guns in single mounts, 51.91lbs / 23.55kg shells, 1929 Model
Dual purpose guns in deck mounts
on centreline ends, majority forward, 1 raised mount
4 - 3.00" / 76.2 mm guns (2x2 guns), 13.50lbs / 6.12kg shells, 1929 Model
Quick firing guns in deck mounts
on centreline, all aft, all raised mounts - superfiring
8 - 1.57" / 40.0 mm guns (2x4 guns), 1.95lbs / 0.88kg shells, 1929 Model
Anti-aircraft guns in deck mounts
on centreline, evenly spread
12 - 0.79" / 20.0 mm guns (6x2 guns), 0.24lbs / 0.11kg shells, 1929 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 228 lbs / 104 kg
Shells per gun, main battery: 120

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.20" / 30 mm - -

Machinery:
Diesel Internal combustion motors,
Geared drive, 4 shafts, 9,598 shp / 7,160 Kw = 24.00 kts
Range 11,700nm at 12.00 kts
Bunker at max displacement = 417 tons

Complement:
90 - 118

Cost:
£0.368 million / $1.473 million

Distribution of weights at normal displacement:
Armament: 29 tons, 2.8 %
Armour: 9 tons, 0.9 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 9 tons, 0.9 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 295 tons, 28.5 %
Hull, fittings & equipment: 413 tons, 39.9 %
Fuel, ammunition & stores: 270 tons, 26.1 %
Miscellaneous weights: 20 tons, 1.9 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,135 lbs / 515 Kg = 21.9 x 4.7 " / 119 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.27
Metacentric height 1.2 ft / 0.4 m
Roll period: 11.1 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.36
Seaboat quality (Average = 1.00): 1.25

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.500
Length to Beam Ratio: 8.62 : 1
'Natural speed' for length: 15.81 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 57
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: 17.00 ft / 5.18 m
- Forecastle (20 %): 12.00 ft / 3.66 m
- Mid (50 %): 12.00 ft / 3.66 m
- Quarterdeck (15 %): 12.00 ft / 3.66 m
- Stern: 12.00 ft / 3.66 m
- Average freeboard: 12.40 ft / 3.78 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 115.6 %
- Above water (accommodation/working, high = better): 122.7 %
Waterplane Area: 4,830 Square feet or 449 Square metres
Displacement factor (Displacement / loading): 122 %
Structure weight / hull surface area: 45 lbs/sq ft or 219 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.87
- Longitudinal: 3.60
- Overall: 1.00
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

3

Friday, July 22nd 2005, 9:29am

I think she might be a bit small to carry a seaplane. Also, might it be better to use reciprocating engines like the Flower-Class instead of untried diesels?

4

Friday, July 22nd 2005, 3:38pm

You might want to send a delegation over to Greece to take a look at their "multi-purpose hull".

Quoted

Also, might it be better to use reciprocating engines like the Flower-Class instead of untried diesels?

They could always order the diesels from the M.A.N.O. factory... ;-)

5

Friday, July 22nd 2005, 6:30pm

Yes, but Reciprocating engines are still better.

6

Friday, July 22nd 2005, 8:50pm

Quoted

I think she might be a bit small to carry a seaplane
Well the Fillipinos stuffed a floatplane into a torppedo boat, and some submarines carried seaplanes. I think she can carry at least one.

Quoted

Also, might it be better to use reciprocating engines like the Flower-Class instead of untried diesels?
Wont work, looks like SS2 hates reciprocating engs. But I can use steam turbines just fine.

Whats the problem with diesels anyway? Submarines have been using them for 200 years now.

Quoted

You might want to send a delegation over to Greece to take a look at their "multi-purpose hull".
Took a look at it, its too big for me. I can build two ships to one greek. But the concept is the same.

7

Friday, July 22nd 2005, 9:22pm

200 years??

8

Friday, July 22nd 2005, 9:49pm

An extra 0, I hope. Granted, they did find a battery on the Hunley but they think it was linked to the spar torpedo firing system.

9

Friday, July 22nd 2005, 9:52pm

LOL Thats one too many zeros.

10

Friday, July 22nd 2005, 10:03pm

They still aren't as reliable or efficient as the good old recprocating engine. For Chugging along at 10-15knts convoy speed there is nothing better.

11

Saturday, July 23rd 2005, 1:50am

But will the powerplant fit in the small frame it has been selected for at the quested output?