Latest and overdue Maori designs

[Valles]

First, the 1914 and 1915 destroyer years were essentially identical, to this design. They're not popular ships with their crews, but they work for what they're for.

DE-1914, Maori Destroyer laid down 1914 (Engine 1909)

Displacement:
   1,000 t light; 1,029 t standard; 1,192 t normal; 1,322 t full load

Dimensions: Length overall / water x beam x draught
   334.55 ft / 328.08 ft x 29.53 ft x 9.84 ft (normal load)
   101.97 m / 100.00 m x 9.00 m  x 3.00 m

Armament:
      2 - 2.95" / 75.0 mm guns in single mounts, 12.87lbs / 5.84kg shells, 1914 Model
     Quick firing guns in deck mounts with hoists
     on centreline ends, evenly spread
      2 - 2.95" / 75.0 mm guns in single mounts, 12.87lbs / 5.84kg shells, 1914 Model
     Quick firing guns in deck mounts with hoists
     on side, all forward
   Weight of broadside 51 lbs / 23 kg
   Shells per gun, main battery: 150
   6 - 20.7" / 525 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.39" / 10 mm   0.39" / 10 mm      0.39" / 10 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 2 shafts, 21,507 shp / 16,044 Kw = 30.00 kts
   Range 3,000nm at 14.00 kts
   Bunker at max displacement = 293 tons

Complement:
   100 - 131

Cost:
   £0.167 million / $0.667 million

Distribution of weights at normal displacement:
   Armament: 6 tons, 0.5 %
   Armour: 2 tons, 0.1 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 2 tons, 0.1 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 647 tons, 54.3 %
   Hull, fittings & equipment: 305 tons, 25.6 %
   Fuel, ammunition & stores: 191 tons, 16.1 %
   Miscellaneous weights: 40 tons, 3.4 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     302 lbs / 137 Kg = 23.5 x 3.0 " / 75 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.26
   Metacentric height 1.2 ft / 0.4 m
   Roll period: 11.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 89 %
         - Recoil effect (Restricted arc if above 1.00): 0.15
   Seaboat quality  (Average = 1.00): 1.16

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.438
   Length to Beam Ratio: 11.11 : 1
   'Natural speed' for length: 18.11 kts
   Power going to wave formation at top speed: 63 %
   Trim (Max stability = 0, Max steadiness = 100): 77
   Bow angle (Positive = bow angles forward): 10.00 degrees
   Stern overhang: 3.28 ft / 1.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      18.04 ft / 5.50 m
      - Forecastle (20 %):   16.40 ft / 5.00 m
      - Mid (50 %):      16.40 ft / 5.00 m (8.20 ft / 2.50 m aft of break)
      - Quarterdeck (15 %):   8.20 ft / 2.50 m
      - Stern:      8.20 ft / 2.50 m
      - Average freeboard:   12.43 ft / 3.79 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 183.1 %
      - Above water (accommodation/working, high = better): 81.9 %
   Waterplane Area: 6,118 Square feet or 568 Square metres
   Displacement factor (Displacement / loading): 58 %
   Structure weight / hull surface area: 26 lbs/sq ft or 128 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.29
      - Overall: 0.55
   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

[Valles]

Second, the collier variant of the support cruiser type that was just finished.

Infinite Succor, Maori Collier laid down 1915 (Engine 1909)

Displacement:
   8,738 t light; 9,540 t standard; 19,837 t normal; 28,075 t full load

Dimensions: Length overall / water x beam x draught
   557.74 ft / 557.74 ft x 65.62 ft x 24.61 ft (normal load)
   170.00 m / 170.00 m x 20.00 m  x 7.50 m

Armament:
      2 - 5.91" / 150 mm guns in single mounts, 110.23lbs / 50.00kg shells, 1915 Model
     Breech loading guns in deck mounts
     on centreline ends, evenly spread
      4 - 2.95" / 75.0 mm guns in single mounts, 13.23lbs / 6.00kg shells, 1915 Model
     Breech loading guns in deck mounts
     on side, all amidships
   Weight of broadside 273 lbs / 124 kg
   Shells per gun, main battery: 2,500

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Electric motors, 2 shafts, 23,356 ihp / 17,424 Kw = 20.00 kts
   Range 27,000nm at 14.00 kts
   Bunker at max displacement = 18,536 tons (100% coal)

Complement:
   835 - 1,086

Cost:
   £0.850 million / $3.400 million

Distribution of weights at normal displacement:
   Armament: 32 tons, 0.2 %
   Machinery: 1,797 tons, 9.1 %
   Hull, fittings & equipment: 4,609 tons, 23.2 %
   Fuel, ammunition & stores: 11,099 tons, 56.0 %
   Miscellaneous weights: 2,300 tons, 11.6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     52,481 lbs / 23,805 Kg = 509.6 x 5.9 " / 150 mm shells or 4.8 torpedoes
   Stability (Unstable if below 1.00): 1.37
   Metacentric height 4.6 ft / 1.4 m
   Roll period: 12.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0.03
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.771
   Length to Beam Ratio: 8.50 : 1
   'Natural speed' for length: 23.62 kts
   Power going to wave formation at top speed: 42 %
   Trim (Max stability = 0, Max steadiness = 100): 51
   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:      26.25 ft / 8.00 m
      - Forecastle (15 %):   24.61 ft / 7.50 m
      - Mid (50 %):      24.61 ft / 7.50 m
      - Quarterdeck (15 %):   24.61 ft / 7.50 m
      - Stern:      24.61 ft / 7.50 m
      - Average freeboard:   24.70 ft / 7.53 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 46.6 %
      - Above water (accommodation/working, high = better): 175.2 %
   Waterplane Area: 31,209 Square feet or 2,899 Square metres
   Displacement factor (Displacement / loading): 323 %
   Structure weight / hull surface area: 91 lbs/sq ft or 443 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.94
      - Longitudinal: 1.75
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[Valles]

The same, but for oil.

High Charity, Maori Oiler laid down 1915 (Engine 1909)

Displacement:
   8,576 t light; 9,378 t standard; 19,837 t normal; 28,205 t full load

Dimensions: Length overall / water x beam x draught
   557.74 ft / 557.74 ft x 65.62 ft x 24.61 ft (normal load)
   170.00 m / 170.00 m x 20.00 m  x 7.50 m

Armament:
      2 - 5.91" / 150 mm guns in single mounts, 110.23lbs / 50.00kg shells, 1915 Model
     Breech loading guns in deck mounts
     on centreline ends, evenly spread
      4 - 2.95" / 75.0 mm guns in single mounts, 13.23lbs / 6.00kg shells, 1915 Model
     Breech loading guns in deck mounts
     on side, all amidships
   Weight of broadside 273 lbs / 124 kg
   Shells per gun, main battery: 2,500

Machinery:
   Oil fired boilers, complex reciprocating steam engines,
   Electric motors, 2 shafts, 23,356 ihp / 17,424 Kw = 20.00 kts
   Range 38,400nm at 14.00 kts
   Bunker at max displacement = 18,827 tons

Complement:
   835 - 1,086

Cost:
   £0.809 million / $3.234 million

Distribution of weights at normal displacement:
   Armament: 32 tons, 0.2 %
   Machinery: 1,633 tons, 8.2 %
   Hull, fittings & equipment: 4,611 tons, 23.2 %
   Fuel, ammunition & stores: 11,261 tons, 56.8 %
   Miscellaneous weights: 2,300 tons, 11.6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     55,612 lbs / 25,225 Kg = 540.0 x 5.9 " / 150 mm shells or 5.2 torpedoes
   Stability (Unstable if below 1.00): 1.37
   Metacentric height 4.6 ft / 1.4 m
   Roll period: 12.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0.03
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.771
   Length to Beam Ratio: 8.50 : 1
   'Natural speed' for length: 23.62 kts
   Power going to wave formation at top speed: 42 %
   Trim (Max stability = 0, Max steadiness = 100): 51
   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:      26.25 ft / 8.00 m
      - Forecastle (15 %):   24.61 ft / 7.50 m
      - Mid (50 %):      24.61 ft / 7.50 m
      - Quarterdeck (15 %):   24.61 ft / 7.50 m
      - Stern:      24.61 ft / 7.50 m
      - Average freeboard:   24.70 ft / 7.53 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 44.0 %
      - Above water (accommodation/working, high = better): 175.2 %
   Waterplane Area: 31,209 Square feet or 2,899 Square metres
   Displacement factor (Displacement / loading): 341 %
   Structure weight / hull surface area: 91 lbs/sq ft or 443 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.94
      - Longitudinal: 1.75
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[Valles]

And finally, the new escort cruiser class.

CE-1916, Maori Escort laid down 1912

Displacement:
   5,280 t light; 5,539 t standard; 6,837 t normal; 7,875 t full load

Dimensions: Length overall / water x beam x draught
   467.60 ft / 459.32 ft x 52.49 ft x 18.04 ft (normal load)
   142.52 m / 140.00 m x 16.00 m  x 5.50 m

Armament:
      10 - 5.91" / 150 mm guns (5x2 guns), 110.23lbs / 50.00kg shells, 1912 Model
     Breech loading guns in deck mounts with hoists
     on centreline, evenly spread, 2 raised mounts
   Weight of broadside 1,102 lbs / 500 kg
   Shells per gun, main battery: 200

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.94" / 100 mm   321.52 ft / 98.00 m   12.30 ft / 3.75 m
   Ends:   0.98" / 25 mm   137.76 ft / 41.99 m   12.30 ft / 3.75 m
     Main Belt covers 108 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   5.91" / 150 mm   3.94" / 100 mm      3.94" / 100 mm

   - Armour deck: 1.18" / 30 mm, Conning tower: 5.91" / 150 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 2 shafts, 33,356 shp / 24,883 Kw = 26.00 kts
   Range 10,000nm at 14.00 kts
   Bunker at max displacement = 2,336 tons

Complement:
   375 - 488

Cost:
   £0.479 million / $1.916 million

Distribution of weights at normal displacement:
   Armament: 129 tons, 1.9 %
   Armour: 1,323 tons, 19.4 %
      - Belts: 711 tons, 10.4 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 198 tons, 2.9 %
      - Armour Deck: 368 tons, 5.4 %
      - Conning Tower: 46 tons, 0.7 %
   Machinery: 1,330 tons, 19.5 %
   Hull, fittings & equipment: 2,298 tons, 33.6 %
   Fuel, ammunition & stores: 1,557 tons, 22.8 %
   Miscellaneous weights: 200 tons, 2.9 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     9,540 lbs / 4,327 Kg = 92.6 x 5.9 " / 150 mm shells or 1.6 torpedoes
   Stability (Unstable if below 1.00): 1.14
   Metacentric height 2.4 ft / 0.7 m
   Roll period: 14.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.47
   Seaboat quality  (Average = 1.00): 1.17

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.550
   Length to Beam Ratio: 8.75 : 1
   'Natural speed' for length: 21.43 kts
   Power going to wave formation at top speed: 55 %
   Trim (Max stability = 0, Max steadiness = 100): 60
   Bow angle (Positive = bow angles forward): 5.00 degrees
   Stern overhang: 6.56 ft / 2.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      19.69 ft / 6.00 m
      - Forecastle (15 %):   16.40 ft / 5.00 m
      - Mid (50 %):      16.40 ft / 5.00 m
      - Quarterdeck (15 %):   16.40 ft / 5.00 m
      - Stern:      16.40 ft / 5.00 m
      - Average freeboard:   16.60 ft / 5.06 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 82.0 %
      - Above water (accommodation/working, high = better): 140.2 %
   Waterplane Area: 16,827 Square feet or 1,563 Square metres
   Displacement factor (Displacement / loading): 131 %
   Structure weight / hull surface area: 87 lbs/sq ft or 423 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.45
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform

100 tons cruiser fire control
75 tons damage control
25 tons long range wireless

[Guinness]

IMHO 75mm guns are just too small for a 1000t DD. Do the Maoris not have a gun between 75mm and 150mm?

Also I know the Maoris are dedicated to turbo-electric propulsion, but it really doesn't have any compelling advantages in a destroyer, as you'd gain very little compartmentalization and probably don't have a requirement for being able to steam backwards at near 100% power. Of course, such a machinery set should also be heavier than direct drive or geared turbines, but SS2 doesn't capture that fact, so I won't dwell on that.

I'm not personally on-board with the escort cruiser concept either (isn't that what old cruisers are for?). But I guess if you've just got to build one, your escort cruiser is as fine as any. No torpedoes at all though?

[Valles]

I'll have a 100mm/50 available starting 1916H2, but before that, when these ships were built, 75mm and 150mm were the only options, and the latter was abandoned for these on the grounds that it wasn't really feasible to carry a useful number of them - IE, two or more - and still have the enclosed mountings that are necessary in Maoria's southern waters.

If I had geared drives, I'd probably use those for the destroyers, yeah. But I don't, and direct drive's efficiency characteristics are regarded as doing unacceptable things to their range.

And no, no torpedoes on cruisers. No room for submerged tubes and one shell in the wrong place on deck to mission-kill the entire ship? No thanks.

*tries the submerged tube thing* ...hm.

Nah, I'll stick with specialists. Torpedo delivery isn't part of their mission brief; shredding destroyers and other light cruisers is. Maori doctrine is that torpedoes have a maximum effective range of one kilometer, no matter how long they'll run for, and the costs for the kind of speed needed for that would add enough to make for a bigger ship than the Maori are willing to risk in that kind of attack.

[Jefgte]

I agree with Guiness, 75mm gun is short for DD.
Did you test SS with 2 or 3x150mm on 1000t ?

Your escort cruiser is well balanced, she have a strong protection too. Good armament to protect Maoria battleline from DDs TT attack & protected cruisers.

;)

[Valles]

Yep. Won't work with both 1909 engines and ammo hoists, that I've found.

[Valles]

Working on art for the cruiser. Interestingly, she comes out rather roomy feeling on deck, at least to me after so much work on Cross Mirage.

[Valles]

The weekend's admittedly minimal progress.

[Valles]

Sighting gear, searchlights, boats, ventilators, wave guards, top view, adjusted turret placement.

[maddox]

Pity about the lower rangefinders. They have large area's they can't do their job. 
When 1 of the lenses is obscured by the leg of the quadpod mast.

[Valles]

Where 'Large' equals, what, a quarter the diameter of the funnels, sure.

[Jefgte]

IMO, better places for lower rangefinders are on blockhaus near B & X turrets


;)

[Valles]

Hm. Perhaps. But there's the issue of deck space - the beam-and-length four-post takes up more than some other approaches, and most designs won't be as relatively roomy as this one...

...and frankly, I'm too enamored of the way they look.

Anyway. Here's the latest.