WesWorld

...tho "Antarctic Panzerschiffe" might be more like it. ^_^

Based on the real-world Finnish coast-defense ships, these ships will primarily serve as "normal" CDSes, but have reinforced hulls so that (at least) one will always accompany the Pacifica on its Antarctic voyages of discovery.

Note on armour: the main belt is actually 160mm for a height of 3m, but it thins below that (the sim of 40mm for over an extra 0.5m is an average).

Filipino Bacolod-class "Antarctic Battleship" laid down 1929

Displacement:
3,869 t light; 4,081 t standard; 4,697 t normal; 5,191 t full load

Dimensions: Length overall / water x beam x draught
319.95 ft / 305.12 ft x 54.79 ft x 18.04 ft (normal load)
97.52 m / 93.00 m x 16.70 m x 5.50 m

Armament:
6 - 7.09" / 180 mm guns (2x3 guns), 180.00lbs / 81.65kg shells, 1929 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
4 - 3.94" / 100 mm guns (2x2 guns), 32.00lbs / 14.51kg shells, 1929 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread, all raised mounts - superfiring
4 - 3.94" / 100 mm guns (2x2 guns), 30.51lbs / 13.84kg shells, 1929 Model
Dual purpose guns in deck mounts with hoists
on side, all amidships
12 - 0.98" / 25.0 mm guns (4x3 guns), 0.57lbs / 0.26kg shells, 1929 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, all raised mounts
8 - 0.54" / 13.7 mm guns in single mounts, 0.11lbs / 0.05kg shells, 1929 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts

Weight of broadside 1,338 lbs / 607 kg
Shells per gun, main battery: 150

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.72" / 120 mm 239.50 ft / 73.00 m 9.84 ft / 3.00 m
Ends: 1.97" / 50 mm 65.62 ft / 20.00 m 9.84 ft / 3.00 m
Upper: 1.57" / 40 mm 108.27 ft / 33.00 m 11.48 ft / 3.50 m
Main Belt covers 121 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 6.10" / 155 mm 3.15" / 80 mm 4.92" / 125 mm
2nd: 1.18" / 30 mm 0.59" / 15 mm 1.18" / 30 mm
3rd: 1.18" / 30 mm 0.59" / 15 mm 1.18" / 30 mm
4th: 0.59" / 15 mm - -

- Armour deck: 3.15" / 80 mm, Conning tower: 3.15" / 80 mm

Machinery:
Diesel Internal combustion generators,
Electric motors, 2 shafts, 11,527 shp / 8,599 Kw = 20.00 kts
Range 12,500nm at 12.00 kts (Bunkerage = 1,110 tons)

Complement:
283 - 368

Cost:
£1.294 million / $5.174 million

Distribution of weights at normal displacement:
Armament: 165 tons, 3.5 %
Armour: 1,555 tons, 33.1 %
- Belts: 620 tons, 13.2 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 239 tons, 5.1 %
- Armour Deck: 677 tons, 14.4 %
- Conning Tower: 19 tons, 0.4 %
Machinery: 354 tons, 7.5 %
Hull, fittings & equipment: 1,745 tons, 37.2 %
Fuel, ammunition & stores: 828 tons, 17.6 %
Miscellaneous weights: 50 tons, 1.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
9,013 lbs / 4,088 Kg = 50.7 x 7.1 " / 180 mm shells or 2.4 torpedoes
Stability (Unstable if below 1.00): 1.08
Metacentric height 2.4 ft / 0.7 m
Roll period: 14.9 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.46
Seaboat quality (Average = 1.00): 1.22

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.545
Length to Beam Ratio: 5.57 : 1
'Natural speed' for length: 17.47 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 58
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 20.01 ft / 6.10 m
- Forecastle (22 %): 16.40 ft / 5.00 m
- Mid (50 %): 13.12 ft / 4.00 m
- Quarterdeck (22 %): 13.12 ft / 4.00 m
- Stern: 13.12 ft / 4.00 m
- Average freeboard: 14.62 ft / 4.46 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 53.9 %
- Above water (accommodation/working, high = better): 109.0 %
Waterplane Area: 11,612 Square feet or 1,079 Square metres
Displacement factor (Displacement / loading): 129 %
Structure weight / hull surface area: 100 lbs/sq ft or 489 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 3.22
- Overall: 1.10
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

25t special underwater protection
25t winterization

So this is the dread battleship Roberts then?

So what does an Antarctic battleship shoot?

Snowballs?

Penguins have better ballistic properties. Frankly, we in the US can't begin to comprehend just what the h-e-double toothpicks you all are so interested in down there. Its just ICE!!! Miles and miles of endless, unrelenting ice, and wind, and COLD!!!

Quoted

Penguins have better ballistic properties.

Play pingu-extreme.

http://www.nata2.info/humor/flash/pinguxtreme.swf

Cheers,

Waaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaay too addictive!

I got 850 as my max distance...thats longer than my Battlecruiser Vengeance!

850m? Puny. 1017 on my first go.

Uh huh...and I have a bridge to sell!

I think you'd find that your range of 12,000 nm is basically blown on the round trip from the Philippines to Antarctica and back. If you want to actually maintain a presence down there, you'll need a refueling station in the sub-polar region, tanker support, or a greater range.

What's prompted the introduction of seven inch guns?

Quoted

What's prompted the introduction of seven inch guns

The desire to make the quatermaster's job as bad as possible.

Quoted

Originally posted by The Rock Doctor
I think you'd find that your range of 12,000 nm is basically blown on the round trip from the Philippines to Antarctica and back. If you want to actually maintain a presence down there, you'll need a refueling station in the sub-polar region, tanker support, or a greater range.

Hmm, good thing I have that tanker. :-)

Quoted

What's prompted the introduction of seven inch guns?

The fact that 180mm is (essentially) halfway between 155mm and 210mm? ^_^ Seriously, I wanted more than four guns, and I didn't think quad 155s would work on this hull. So, voila.

I think... you have to be incredibly lucky with the placement of those mines.
Quite bloody as well...

So....how long until we can expect a Habbakuk-type vessel?

Well I haven't made my Antarctic claim just to count penguins (or clubbing them over great distances).
:-)

Quoted

I think you'd find that your range of 12,000 nm is basically blown on the round trip from the Philippines to Antarctica and back. If you want to actually maintain a presence down there, you'll need a refueling station in the sub-polar region, tanker support, or a greater range.

Quoted

Hmm, good thing I have that tanker.

You'll need more than one, since any serious icebreaking is done at full power, and is very slow (1-3 knots) work.

This one isn't actually supposed to do the breaking itself, rather to follow along behind the 'breaker.