New New Zion ships for 1914

[Desertfox]

And a picture of her, next to my Lavi class destroyers.

[The Rock Doctor]

Boats?  Searchlights?  This is a very crowded little vessel.

[Desertfox]

I can probably squeeze in a pair of boats next to the middle 3" mount. A searchlight would go on top of the bridge.

Here's another lake boat.

ML-1, New Zion Motor Launch laid down 1914

Displacement:
   31 t light; 32 t standard; 34 t normal; 35 t full load

Dimensions: Length overall / water x beam x draught
   91.00 ft / 91.00 ft x 10.00 ft x 3.00 ft (normal load)
   27.74 m / 27.74 m x 3.05 m  x 0.91 m

Armament:
      1 - 1.97" / 50.0 mm guns in single mounts, 3.81lbs / 1.73kg shells, 1914 Model
     Breech loading gun in deck mount
     on centreline forward
      1 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1914 Model
     Machine gun in deck mounts
     on side, evenly spread
      2 - 0.30" / 7.6 mm guns in single mounts, 0.01lbs / 0.01kg shells, 1914 Model
     Machine guns in deck mounts
     on side, evenly spread
      4 - 0.31" / 7.9 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1914 Model
     Breech loading guns in deck mounts
     on side, evenly spread
   Weight of broadside 4 lbs / 2 kg
   Shells per gun, main battery: 100

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.50" / 13 mm         -               -

   - Conning tower: 0.50" / 13 mm

Machinery:
   Petrol Internal combustion motors,
   Geared drive, 1 shaft, 852 shp / 636 Kw = 20.00 kts
   Range 500nm at 10.00 kts
   Bunker at max displacement = 2 tons

Complement:
   6 - 9

Cost:
   £0.005 million / $0.020 million

Distribution of weights at normal displacement:
   Armament: 0 tons, 1.5 %
   Armour: 1 tons, 1.7 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 0 tons, 1.4 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.3 %
   Machinery: 17 tons, 51.1 %
   Hull, fittings & equipment: 13 tons, 38.9 %
   Fuel, ammunition & stores: 2 tons, 6.8 %
   Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     12 lbs / 6 Kg = 3.2 x 2.0 " / 50 mm shells or 0.1 torpedoes
   Stability (Unstable if below 1.00): 1.16
   Metacentric height 0.2 ft / 0.1 m
   Roll period: 9.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.17
   Seaboat quality  (Average = 1.00): 0.82

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.430
   Length to Beam Ratio: 9.10 : 1
   'Natural speed' for length: 9.54 kts
   Power going to wave formation at top speed: 74 %
   Trim (Max stability = 0, Max steadiness = 100): 61
   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:      7.00 ft / 2.13 m
      - Forecastle (30 %):   5.50 ft / 1.68 m
      - Mid (50 %):      5.00 ft / 1.52 m
      - Quarterdeck (15 %):   5.00 ft / 1.52 m
      - Stern:      5.00 ft / 1.52 m
      - Average freeboard:   5.38 ft / 1.64 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 176.0 %
      - Above water (accommodation/working, high = better): 87.7 %
   Waterplane Area: 543 Square feet or 50 Square metres
   Displacement factor (Displacement / loading): 48 %
   Structure weight / hull surface area: 10 lbs/sq ft or 48 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 5.24
      - Overall: 0.63
   Caution: Hull subject to strain in open-sea
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped
   Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

[The Rock Doctor]

She doesn't really strike me as being fast enough to justify the TB-type hull strength.

What's the engine year on her?

The overall concept looks good - I have similar, somewhat larger craft in service myself, but with a lower speed and a more (I think) appropriate hull strength.

[P3D]

The MTB 'tech' should work for this motor launch fine IMO.

[Desertfox]

Another new ship. A specialized gunboat designed to protect minefields from being swept. Placed on top of said minefields it's job would be to destroy any minesweepers. It's very low draught means it ccan operate in minefields shallow enough to sink destroyers.

Also it is extremly cheap, so can be built in large numbers and very fast.


New Zion Gunboat laid down 1912

Displacement:
   70 t light; 76 t standard; 78 t normal; 80 t full load

Dimensions: Length overall / water x beam x draught
   150.00 ft / 150.00 ft x 17.00 ft x 2.50 ft (normal load)
   45.72 m / 45.72 m x 5.18 m  x 0.76 m

Armament:
      2 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1912 Model
     Quick firing guns in deck mounts
     on centreline ends, evenly spread
      2 - 0.98" / 25.0 mm guns in single mounts, 0.48lbs / 0.22kg shells, 1912 Model
     Quick firing guns in deck mounts
     on centreline, evenly spread
      4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1912 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 28 lbs / 13 kg
   Shells per gun, main battery: 250

Machinery:
   Diesel Internal combustion motors,
   Geared drive, 1 shaft, 361 shp / 270 Kw = 15.00 kts
   Range 500nm at 10.00 kts
   Bunker at max displacement = 5 tons

Complement:
   13 - 17

Cost:
   £0.007 million / $0.030 million

Distribution of weights at normal displacement:
   Armament: 4 tons, 4.5 %
   Machinery: 14 tons, 18.4 %
   Hull, fittings & equipment: 48 tons, 61.4 %
   Fuel, ammunition & stores: 8 tons, 10.6 %
   Miscellaneous weights: 4 tons, 5.1 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     150 lbs / 68 Kg = 11.1 x 3.0 " / 76 mm shells or 0.3 torpedoes
   Stability (Unstable if below 1.00): 1.14
   Metacentric height 0.4 ft / 0.1 m
   Roll period: 10.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.21
   Seaboat quality  (Average = 1.00): 1.04

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.430
   Length to Beam Ratio: 8.82 : 1
   'Natural speed' for length: 12.25 kts
   Power going to wave formation at top speed: 45 %
   Trim (Max stability = 0, Max steadiness = 100): 67
   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:      7.00 ft / 2.13 m
      - Forecastle (20 %):   5.00 ft / 1.52 m
      - Mid (40 %):      5.00 ft / 1.52 m
      - Quarterdeck (15 %):   5.00 ft / 1.52 m
      - Stern:      5.00 ft / 1.52 m
      - Average freeboard:   5.16 ft / 1.57 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 102.5 %
      - Above water (accommodation/working, high = better): 111.4 %
   Waterplane Area: 1,521 Square feet or 141 Square metres
   Displacement factor (Displacement / loading): 128 %
   Structure weight / hull surface area: 22 lbs/sq ft or 110 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.97
      - Longitudinal: 1.36
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform

[Guinness]

An interesting design, but it brings to mind a question: If you are defending minefields, why not use shore artillery, which would be both cheaper and a whole lot harder to sink. The OTL Ottoman defense of the fields in the Dardanelles comes to mind. Mobile batteries which can be relocated periodically and dug in simply are a powerful aid to minefields.

Or is this boat meant to defend fields to further from shore maybe?